New York Chicago

6 nonstop pairs · 12 nonstop airlines · 1271 nonstop flights/week

New York to Chicago is the second-busiest air corridor in the country, with nonstop flights leaving from three New York airports most hours of the day.

If you are in Manhattan and heading to the Loop or Chicago's west side, fly LaGuardia to Midway on Southwest. Both airports sit closer to their city centers than any other pairing on this route. Midway's Orange Line drops you in the Loop in 25 minutes. The flight runs about two and a half hours, with departures throughout the day.

If you are going to O'Hare or anywhere on the north side, LaGuardia to O'Hare gives you Delta, American, United, and Spirit, with flights leaving about every hour. Newark to O'Hare has the same carriers at the same pace, so if you are in New Jersey or lower Manhattan, start there. The Blue Line from O'Hare takes about 45 minutes to the Loop.

Spirit flies the cheapest fares from both LaGuardia and Newark to O'Hare. You lose seat selection and carry-on bags, but the base fare can be half what the legacy carriers charge.

JFK to O'Hare is worth knowing about for one reason: JetBlue flies the Airbus A220-300 here, which has wider economy seats and bigger windows than anything else on a domestic flight this short. Delta, American, and Frontier also cover it.

If you see Turkish Airlines, Cathay Pacific, or Qantas on a JFK to O'Hare search, that is not their plane. Those are codeshare tickets that put you on an American or Delta flight with American or Delta crew. The only reason to book through them is if your frequent flyer program makes the math work.

Have a specific need? Use the decision guide below to filter by your airline, where you live, lounges, or where you're staying in Chicago.

Best Overall
LGA ORD
3 airlines 569/wk 2h 46m
44% on-time
American Airlines, United Airlines, Delta Air Lines. Also bookable via Spirit Airlines. Fly LaGuardia to O'Hare, where departures leave every 20 minutes from Midtown's closest airport.
Explore LGA → ORD
Strong Alternative
EWR → ORD
2 airlines · 330/wk · 2h 43m
American Airlines, United Airlines. Also bookable via GoJet Airlines, Sun Country Airlines, Delta Air Lines +1 more. Southwest from LaGuardia to Midway puts you 7 miles closer to the Loop, but only one carrier and no first class.
77%
New York → Chicago 5 airlines · 320/wk · 2h55m · JetBlue and Frontier add lower-fare options from JFK. Best from Brooklyn or Queens. Good New York → Chicago 1 airline · 50/wk · 2h25m · Southwest only. Midway is 10 miles from the Loop, 7 closer than O'Hare. Good Newark → Chicago 2 airlines · 1/wk · 2h45m · About one flight a day. Thin schedule makes this a last resort between Newark and Midway. Sparse New York → Chicago 1 airline · 1/wk · 1h52m Sparse
Nearby cities with nonstop service
~60mi Philadelphia → Chicago 20 airlines · 414/wk Nearby ~101mi Hartford → Chicago 9 airlines · 170/wk Nearby ~83mi Allentown/Bethlehem → Chicago 6 airlines · 97/wk Nearby ~104mi Wilkes-Barre/Scranton → Chicago 6 airlines · 75/wk Nearby ~22mi White Plains → Chicago 14 airlines · 53/wk Nearby ~11mi Teterboro → Chicago 32 airlines · 13/wk Nearby
Nearby cities · connections only
~40mi Islip No nonstop to Chicago Connecting ~61mi New Haven No nonstop to Chicago Connecting ~99mi Atlantic City No nonstop to Chicago Connecting

Pick What Matters to You

Show me the best pair for...

Best pair by where you're coming from

Your location determines which airport is closest and most convenient.
Manhattan (Midtown and Below) Best
JFK via AirTrain and subway or LIRR from Jamaica, 60 to 75 minutes total. Newark is faster from Penn Station: NJ Transit takes around 25 minutes. Both airports have nonstop international service.
Brooklyn Best
JFK is the closer airport. The drive is 30 to 50 minutes depending on Belt Parkway traffic. A train to Howard Beach, then AirTrain to the terminal. Newark adds a river crossing and at least 20 extra minutes.
Queens Best
JFK is in Queens. Depending on your neighborhood, the drive is 15 to 30 minutes. The easiest airport connection in the metro area.
Northern New Jersey Best
Newark. No question. I-78, I-95, or the Garden State Parkway depending on direction. No river crossings, no city traffic.
The Bronx Flexible
Both airports are roughly equidistant and neither is convenient. JFK requires subway transfers. Newark means getting to Penn Station first. Budget extra time from the Bronx either way.
Westchester and North of the City Good
Newark via I-287 avoids Manhattan entirely. JFK means driving through the Bronx or taking Metro-North to Penn for the subway connection. Newark is the better call from most of Westchester.
For most New York-area travelers, LGA → ORD is the default.4 airlines, 569 flights/wk.
Explore LGA → ORD

Best pair by where you're staying in Chicago

Your Chicago airport matters as much as your New York airport.
The Loop and Financial District Best
The center of Chicago's business district. The CTA Orange Line from Midway reaches the Loop in about 25 minutes. The Blue Line from O'Hare takes about 45. If your office is here, Midway saves ground time, but O'Hare gives you more flight options throughout the day.
River North and Magnificent Mile Good
Most business hotels and conference venues cluster here. The Blue Line from O'Hare stops at Grand, which is walkable to most River North hotels. From Midway, the Orange Line requires a transfer downtown. O'Hare is the easier connection for this area.
West Loop and Fulton Market Tradeoff
Chicago's restaurant district and a growing tech and media hub. Reachable from both airports by train or taxi in similar time. Pick whichever airport has the better flight for your schedule.
South Side and Hyde Park Good
University of Chicago territory. Midway is about 15 minutes away by car. O'Hare is 45 minutes or more. If this is your destination, Southwest to Midway saves real time on the ground.
Lincoln Park and Lakeview Tradeoff
North Side residential neighborhoods popular for longer stays. O'Hare is the natural airport. The Blue Line runs through this area on its way downtown, so you can exit at Fullerton or Belmont and skip the Loop transfer entirely.
Rosemont and the O'Hare Corridor Good
Convention centers and corporate campuses line the area near O'Hare. If your meeting is here, a five-minute cab from the terminal is the entire ground trip. Flying into Midway adds 30 minutes or more for no benefit.
ORD is the right Chicago airport for most travelers.Check individual route pages for ground transport from ORD.
Explore LGA → ORD

Which pair your airline flies nonstop

Loyalty programs drive airport choice for frequent flyers. Here's where each airline operates.
AirlineLGA–ORDEWR–ORDJFK–ORDLGA–MDW
Cathay Pacific
Frontier
Turkish Airlines
GoJet Airlines
JetBlue
Sun Country Airlines
American Airlines
United Airlines
Spirit Airlines
Qantas
Delta Air Lines
Southwest Airlines
Most airlines fly LGA → ORD.4 airlines serve multiple pairs.
Explore LGA → ORD

Ranked by on-time performance

On-time = departing within 15 min of schedule. Higher competition tends to keep airlines punctual.
LGA → ORD #1
44% on-time. 4 airlines competing means schedule padding is tight and delays get absorbed.
EWR → ORD
77% on-time. 6 airlines competing means schedule padding is tight and delays get absorbed.
JFK → ORD
31% on-time. 7 airlines competing means schedule padding is tight and delays get absorbed.
LGA → MDW
44% on-time. 1 airlines competing.
2 other pairs
Insufficient data — 1 flight/week doesn't generate meaningful OTP stats.
LGA → ORD has a 44% on-time record.High competition keeps airlines punctual.
Explore LGA → ORD

Lounge access by airport and terminal

Premium lounge access varies dramatically by terminal. This alone can determine airport choice for some travelers.
Terminal B Lounges Good
The rebuilt Terminal B has airline club lounges with seating, Wi-Fi, drinks, and light food. Access through airline loyalty programs or eligible credit cards. The new terminal makes the lounge experience better than what LaGuardia used to offer, which was close to nothing.
Terminal C Lounges Good
Club lounges in Terminal C for eligible passengers. Same access rules: airline status, credit card membership, or a same-day qualifying ticket. Quality is standard domestic lounge level.
Gate Areas
The rebuilt terminals have better gate seating, charging outlets, and food options than the old LaGuardia. On a short domestic flight, the gate area is fine. Spend the lounge walk-in fee on dinner at the destination instead.
JFK T4 Centurion Lounge Top Tier
American Express Platinum or Centurion cardholders. Cocktail bar, sit-down dining, showers. One of the better Centurion locations. Access is card-based regardless of airline.
JFK T4 Delta Sky Club Good
Large club with runway views, full bar, and hot food. Gets crowded during the evening international push. Delta One and SkyMiles status get you in; everyone else needs a same-day Delta boarding pass plus a qualifying credit card.
JFK T8 Flagship Lounge Top Tier
American and British Airways premium cabin passengers. Quieter than T4, with showers and a dining room. BA passengers flying Club Suite have access here before JFK to Heathrow flights.
JFK T5 JetBlue Mint Lounge Good
Open to Mint passengers on JetBlue. Smaller than the legacy carrier clubs but less crowded. Food and drinks included. The terminal itself has decent food options if the lounge is full.
JFK T1 International Lounges Good
A collection of carrier-specific lounges including Turkish, Air France, and Korean Air. Quality varies. The Turkish lounge is a standout if you have access.
EWR Terminal C Polaris Lounge Top Tier
United Polaris passengers and Star Alliance business class. Full sit-down restaurant with table service, shower suites, daybeds, and a cocktail bar. One of the best airline lounges in North America. If you are flying United Polaris business class, arrive early and use it.
EWR Terminal C United Club Good
Standard United Club with hot food, bar, and seating. Multiple locations in Terminal C. Gets crowded during the evening departure wave. United Club membership, Star Alliance Gold, or certain credit cards get you in.
EWR Terminal A Lounges Good
The rebuilt Terminal A has fresh lounge space. Carrier-specific lounges are still filling in. The terminal itself is well-designed with better food options than the old building.
Independent lounge Good
Midway has one third-party lounge accessible with Priority Pass or certain credit cards. Day passes cost around $40 to $50. Complimentary food, drinks, and Wi-Fi in a small space that fills during peak travel periods.
General terminal
No carrier-operated lounges at this airport. Beyond the independent lounge, the terminal offers food courts and charging stations near gates.
Terminal 1 - United Polaris Lounge Top Tier
A la carte dining, showers, and a calm pre-flight atmosphere. One of the best airline lounges in the country. Open to United Polaris business class passengers and top-tier Star Alliance status holders. No paid walk-in access.
Terminal 1 - United Club Good
Multiple locations across Terminal 1 concourses. Standard airline lounge with drinks, light food, and Wi-Fi. Access via United Club membership, certain credit cards, or Star Alliance Gold status. Gets busy during peak afternoon hours.
Terminal 3 - Admirals Club Good
American Airlines lounge with locations in Terminal 3. Access for AAdvantage Executive Platinum and above, oneworld Emerald status, or Admirals Club membership. Standard food and drink selection.
Terminal 5 - International Lounges Flexible
The international terminal has Priority Pass options and airline-operated lounges. They tend to be smaller and busier than the domestic terminal lounges, especially during afternoon departure waves. Arrive early if you want a seat.
Your airline and cabin class determine which lounges you can access.Check route pages for terminal assignments.
Explore LGA → ORD

Ranked by flights per week

More flights = more flexibility. Miss your flight, catch the next one. Schedule depth is insurance.
LGA → ORD #1
569/wk (~81/day) — 4 airlines. A departure roughly every 18 minutes at peak.
EWR → ORD
330/wk (~47/day) — 6 airlines. A departure roughly every 31 minutes at peak.
JFK → ORD
320/wk (~46/day) — 7 airlines. A departure roughly every 32 minutes at peak.
LGA → MDW
50/wk (~7/day) — 1 airlines.
2 others
1/wk each. Not viable for flexible travel planning.
LGA → ORD: 569 flights/week.Miss one flight, wait 18 min for the next.
Explore LGA → ORD

Getting to the airport

Cost and time vary by mode. Train is more predictable than driving.
Taxi or Rideshare Best
From midtown Manhattan, 20 to 30 minutes depending on traffic. Around $30 to $40 by taxi. The Grand Central Parkway connects directly. Morning rush into the city and evening rush out are the times to avoid.
Q70 SBS Bus to Subway Good
Runs from all LaGuardia terminals to the Jackson Heights subway hub in about 10 minutes. Transfer to the 7, E, F, M, or R train for Manhattan, Brooklyn, or Queens. The cheapest way to the airport from anywhere with a subway connection.
M60 SBS Bus Flexible
Runs across 125th Street in Manhattan to LaGuardia, connecting to the A, B, C, and D trains and Metro-North at Harlem-125th Street. Useful from the Upper West Side, Harlem, or the Bronx. Around 40 to 50 minutes from the West Side.
Driving and Parking Flexible
No rail link to LaGuardia. If you drive, parking runs around $40 per day in the terminal garages. Cell phone lots are free for pickup. The airport is compact enough that the walk from parking to gates stays short.
AirTrain + LIRR Best
AirTrain to Jamaica Station, then Long Island Rail Road to Penn Station in around 20 minutes. Faster and more comfortable than the subway, and you avoid dragging luggage underground. This is the best option for midtown Manhattan.
AirTrain + Subway Value
AirTrain to Jamaica or Howard Beach, then the E or A train into Manhattan. Total time is 60 to 75 minutes. Cheap but slow, and dragging luggage through the subway at rush hour is miserable.
Taxi Flexible
Flat rate of around $110 from JFK to anywhere in Manhattan, plus tolls and tip. Predictable pricing but travel time depends entirely on traffic. The Van Wyck Expressway can turn a 40-minute ride into 90 minutes during rush hour.
Car Service / Black Car
Pre-booked car services run around $70 to $100 depending on vehicle type. No flat-rate guarantee like yellow cabs, but you get a driver waiting at arrivals. Worth it if you are landing late or have a lot of luggage.
NJ Transit from Penn Station Best
Train from New York Penn Station to Newark Airport station in around 25 minutes, then AirTrain to your terminal. Frequent service, cheap, and immune to tunnel traffic. The most reliable way to get to Newark from Manhattan.
Taxi / Rideshare Flexible
No flat rate from Manhattan to Newark. Expect around $60 to $90 depending on traffic and tolls. The Lincoln Tunnel and NJ Turnpike can double your travel time during rush hour. Fine on weekends or off-peak.
Newark Airport Express Bus Value
Bus service from midtown Manhattan (Port Authority, Bryant Park, Grand Central) to all terminals. Takes 40 to 60 minutes depending on traffic. Around $19 one way. A budget option if you are not in a rush.
Car from New Jersey
If you live in northern New Jersey, the drive is straightforward. I-78, I-95, or the Garden State Parkway depending on your direction. Parking is expensive long-term. Cell phone lots exist for pickup.
Weigh transit time against schedule flexibility.A faster airport with fewer flights may not save you time overall.
Explore LGA → ORD

Red-eye vs daytime departures

Departure timing affects jet lag, hotel costs, and how you spend your first day.
Not applicable
The flight is under three hours with a one-hour time zone difference. No carrier runs an overnight departure on this route.
LGA → ORD has the most departure options.Check the route page for schedule details.
Explore LGA → ORD

Premium cabin options

Business and first class products on this route, ranked by value and quality.
Domestic First on Delta, American, and United Top
All three legacy carriers sell domestic first class on this route. Seats are wider recliners, not flat beds. On a flight under three hours, the value is the extra space, priority boarding, and a meal on morning departures. Delta's A220 cabin on the LaGuardia pairing is the newest of the group. United's 757-200 from Newark offers the widest domestic first class seat.
JetBlue from JFK Value
JetBlue does not sell first class. Every seat has more legroom than standard domestic economy, and extra-legroom seats near the front are available for an upcharge. The A220-300 is a quiet, comfortable plane. If you do not need a premium cabin and just want more space than a 737, JetBlue from JFK fills that gap.
Regional Jets on Off-Peak Flights Flexible
United Express CRJ-700s from Newark and Embraer E175s on Delta and American from LaGuardia appear on thinner time slots. These have a small first class section, sometimes as few as nine seats in a 2-1 layout. More private than mainline 2-2, but the seat itself is narrower and the overhead bins are tight. Check the aircraft before buying a premium fare on an off-peak departure.
Check route pages for cabin details per airline.Business class products vary significantly between carriers.
Explore LGA → ORD

Connecting through New York from a domestic flight

Every New York airport has nonstop flights to Chicago throughout the day. A connection through a third city adds hours to a flight that takes under three. The only time it makes sense is if you are starting from a smaller city and connecting through a New York airport anyway.

Arriving LGA Best
Book LGA → ORD. Same airport, no ground transport needed. 4 airlines, 569/wk.
Arriving JFK Best
Book JFK → ORD. Same airport, no ground transport needed. 7 airlines, 320/wk.
Arriving EWR Best
Book EWR → ORD. Same airport, no ground transport needed. 6 airlines, 330/wk.
Self-connecting
Avoid cross-airport transfers. No direct transit links between most metro airports. Budget 4+ hours minimum if you must.
Check which New York airport your domestic flight arrives at, then book Chicago from that same airport.LGA arrivals → LGA–ORD · EWR arrivals → EWR–ORD
LGA → ORD

New York & Chicago Airport Profiles

Each airport has a personality. Terminal quality, transit access, lounge scene, and crowd levels vary dramatically — sometimes more than the flight itself.

LGA LaGuardia Airport Primary

LaGuardia is the New York airport that does not pretend to be anything more than a domestic terminal. No international flights, no customs hall, no transatlantic gates competing for security lane capacity. The result is a faster, simpler airport experience than JFK or Newark for any flight that stays in the country. Eight miles from midtown Manhattan, it is also the closest major airport to the city center.

The rebuilt Terminal B replaced what was widely considered the worst major terminal in the country. The new building is bright and open, with real restaurants instead of the food court that used to define LaGuardia dining. Gates connect via an elevated pedestrian bridge with a clear sightline to the Manhattan skyline. Terminal C is equally compact. Neither terminal is large, and gate-to-gate walks stay under ten minutes.

Chicago Pairs
2
ORD, MDW
Airlines
5
Flights/Week
619
EWR Newark Liberty International Airport Secondary

Newark Liberty has three terminals, and Terminal A opened as a full rebuild in 2023. The old Terminal A was demolished and replaced, and the difference is dramatic. Terminal C is United's hub, massive and busy, with most international flights departing from here. Terminal B handles most other carriers.

The AirTrain connects all three terminals and the NJ Transit / Amtrak rail station. Unlike JFK, the terminals are closer together and the AirTrain loop is faster. Security at Terminal C can back up during afternoon and evening international departures.

The airport sits in New Jersey, around 10 miles from Manhattan. That proximity is deceptive because the drive crosses the Hudson via the Newark Bay or Lincoln Tunnel, and both can be brutal during peak hours. NJ Transit from Penn Station is the more reliable option.

Chicago Pairs
2
ORD, MDW
Airlines
8
Flights/Week
331
JFK John F. Kennedy International Airport Secondary

JFK spreads across four active passenger terminals connected by the AirTrain, and walking between them is not an option. Terminal 1 is the old international building. Terminal 4 is the largest, handling most international carriers. Terminal 5 is the former TWA terminal, now JetBlue's home, with the mid-century curves still intact. Terminal 8 belongs to American and British Airways.

The terminal you depart from depends entirely on your airline. Security wait times vary between them. Terminal 4 tends to be the slowest during evening international departures. Terminal 8 has improved since the co-location of its two main carriers. The TWA Hotel sits adjacent to Terminal 5 if you need to sleep before an early departure or after a late arrival.

JFK feels enormous because it is. Budget extra time for the AirTrain if you are connecting between terminals or arriving by subway. The AirTrain loop takes 10 to 15 minutes end to end.

Chicago Pairs
2
ORD, MDW
Airlines
8
Flights/Week
321
ORD Chicago O'Hare International Airport Primary

O'Hare has four terminals: Terminal 1, Terminal 2, Terminal 3, and the international Terminal 5. There is no Terminal 4. The terminals spread across a wide footprint connected by the ATS train and underground walkways. Allow 15 to 20 minutes to move between them.

Terminal 5 sits apart from the domestic terminals and handles most international flights. The ATS train connects it to the rest of the airport. Afternoon peaks bring longer security and immigration lines. The terminal is functional and recently updated, but smaller than the domestic concourses.

Terminals 1, 2, and 3 form the domestic core, with more dining and lounge options. The Blue Line train to downtown stops under Terminal 2, accessible from any terminal via the ATS.

New York Pairs
3
LGA + EWR + JFK
Nonstop from New York
1219/wk
Into Chicago
45 min
Blue Line to Loop
MDW Chicago Midway International Airport Secondary

Midway is a single-terminal airport on Chicago's southwest side, compact enough to walk end to end in around 10 minutes. One central security checkpoint feeds all concourses. Lines move faster than at larger airports, though holiday weekends and spring break mornings back up. The terminal is older but functional, with food and shops on both sides of security.

Gates are close together and boarding areas are small. Delays mean crowded gate areas with limited seating. The airport handles a high volume of traffic relative to its size. Expect an efficient, basic terminal where everything is a short walk.

New York Pairs
3
EWR + LGA + JFK
Nonstop from New York
52/wk
Into Chicago
25 min
Orange Line train
RFD Chicago Rockford International Airport No Nonstop

Rockford is a small regional airport about 63 miles northwest of downtown Chicago. One terminal with a handful of gates. Security lines are short, and the walk from the parking lot to any gate takes a few minutes. The terminal is quiet outside of departure times, with limited food options.

Parking is close to the building and inexpensive. The trade-off is the drive from the Chicago metro area, which runs 60 to 90 minutes on I-90 depending on traffic and weather.

Full Comparison

Every airport combination ranked by schedule depth. LGA–ORD carries 45% of weekly flights with the best on-time record. EWR–ORD adds another 26%. The remaining 4 pairs share 29% between them.

RouteAirlinesFlights/WkShareDurationOTP
LGA → ORD 3 569
2h 46m 44% Explore →
EWR → ORD 2 330
2h 43m 77% Explore →
JFK → ORD 5 320
2h 55m 31% Explore →
EWR → MDW 2 1 2h 45m 77% Explore →
LGA → MDW 1 50
2h 25m 44% Explore →
JFK → MDW 1 1 1h 52m 31% Explore →

Which Airlines Fly Which Pairs

American Airlines and Delta Air Lines and United Airlines serve both LGA and EWR to ORD — airport flexibility on the New York side.

Not all planes are the same size. The aircraft type below each checkmark tells you whether you are getting a widebody (777, 787, A350) with wider seats and a quieter ride, or a narrowbody (737, A321) with a single aisle. On flights over five hours, the difference is significant.

LGA–ORD
EWR–ORD
JFK–ORD
LGA–MDW
American Airlines

737-800, 737 MAX 8

A319, 737-800

A319, 737 MAX 8
JetBlue

A220-300
Cathay Pacific

74Y
Delta Air Lines

A220-300, 737-800

CRJ-900, E175
Frontier

A321neo
United Airlines

737-800, 737 MAX 8

A321neo, 737-900
Southwest Airlines

737, 737-800
GoJet Airlines (codeshare)

CR7
Spirit Airlines (codeshare)

A320

A320
Qantas (codeshare)

74Y
Sun Country Airlines (codeshare)

737-800
Turkish Airlines (codeshare)

77X

Route Facts

Total Nonstops
1271/wk
Across 6 pairs
Airlines
12
4 on LGA–ORD
Fastest Pair
2h 46m
LGA → ORD
Distance
723 mi
1,163 km
New York
3 airports
LGA, JFK, EWR
Chicago
3 airports
MDW, ORD, RFD
Best OTP
77%
EWR → ORD

Frequently Asked Questions

Common questions about New York to Chicago flights.
If your destination is downtown Chicago or the South Side, yes. Midway is about 10 miles from the Loop, 7 closer than O'Hare. The CTA Orange Line reaches the Loop in about 25 minutes, faster than the Blue Line from O'Hare. Southwest is the only carrier at Midway from New York, so check their schedule first. If you need a connecting flight onward or your meeting is north of the river, stick with O'Hare.
The CTA Blue Line runs from inside the terminal to the Loop in about 45 minutes for around $5. Trains run every few minutes during the day. A taxi or rideshare takes 30 to 60 minutes depending on traffic, with fares around $40 to $50. During rush hour, the train is both faster and more predictable than driving.
Some off-peak United flights from Newark to O'Hare are operated by United Express on CRJ-700 regional jets. These are smaller aircraft with 2-1 seating in first class and 2-2 in economy. They earn the same United miles, use the same terminals, and qualify for the same lounge access. If the aircraft matters to you, check the equipment listed on your booking before purchasing.
Yes, and the one-hour time zone gain flying west makes it easier than the distance suggests. Leave LaGuardia on a 7 AM departure and land before 9 AM Chicago time. Spend a full workday and catch an evening return. The frequency on this route means you do not need to lock into a specific return flight.
Southwest often undercuts walk-up fares on Delta, American, and United, and every fare includes two checked bags. The tradeoff is no assigned seating and no premium cabin. For business travelers buying last-minute, the savings can be significant. For advance purchases, the gap narrows and the schedule flexibility of the O'Hare pairings may matter more.
If you live in South Jersey or the Philadelphia suburbs, yes. Philadelphia is about 60 miles from the New York airports, and the drive to LaGuardia or JFK can take 90 minutes or more. Philadelphia has its own nonstop flights to Chicago and avoids New York airport congestion entirely.
O'Hare is one of the airports most affected by winter weather in the country. Snow, ice, and deicing from December through February can cascade across an entire day's schedule. Book the earliest morning departure if your trip is time-sensitive in winter. If that flight cancels, the sheer number of later departures is your backup. Midway handles fewer flights and can recover faster, but is not immune.