St Louis to Chicago (STL–ORD) — Airlines, Schedules & Connections
Flight Schedule
154 flights
Verified 54m ago
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No flights match your filters.
No nonstop flights on this route. connecting options below.
✦ 1-Stop Connections
→
Separate tickets — book each leg independently. Collect and recheck bags at .
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✧ 2-Stop Connections
Separate tickets — book each leg independently. Collect and recheck bags at each hub.
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St Louis to Chicago
15 carriers, 430 flights/week nonstop.
15 Airlines
430 Flights/wk
258 mi
1h 15m nonstop
-1h behind
98 1-stop hubs
STL–ORD is served by 15 airlines with nonstop service. American Airlines, United Airlines and Alaska Airlines lead the route. The flight covers 258 miles in approximately 1h 15m. Beyond nonstop, 98 hubs offer 1-stop connections.
Carriers on this route
Airline Landscape
All carriers operating nonstop STL–ORD service, compared side by side.
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AA American Airlines | 117 | 319, 321, 738, 7M8, CR7, E70, E75 | 1h22-3h44 | Oneworld | – | |
| UA United Airlines | 113 | 738, 73G, CR5, CR7, E75L, E7W | 1h15-2h30 | Star Alliance | – | |
| AS Alaska Airlines | 69 | 319, 7M8, CR7, E70, E75 | 1h22-1h37 | Oneworld | – | |
| BA British Airways | 35 | 319, CR7, E70 | 1h22-1h34 | Oneworld | – | |
| EI Aer Lingus | 35 | 319, 738, CR7, E70, E75 | 1h22-1h31 | – | – | |
| AC Air Canada | 14 | CR7 | 1h33 | Star Alliance | – | |
| G7 GoJet Airlines LLC d/b/a United Express | 9 | CR5 | 1h33-1h55 | – | – | |
| AV avianca | 7 | CR7 | 1h33 | Star Alliance | – | |
| AY Finnair | 7 | 319 | 1h34 | Oneworld | – | |
| CM Copa Airlines | 7 | CR5 | 1h31 | Star Alliance | – | |
| CX Cathay Pacific | 7 | E70 | 1h22 | Oneworld | – | |
| GF Gulf Air | 7 | CR7 | 1h30 | – | – | |
| AM Aeromexico | 1 | – | 8h | SkyTeam | – | |
| NK Spirit Airlines | 1 | – | 1h45 | – | – | |
| WN Southwest Airlines | 1 | – | 2h13 | – | – |
Aircraft on this route
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule
Weekly Schedule Pattern
Nonstop flight frequency by day of week, STL to ORD direction.
Mon
63
flights
Tue
61
flights
Wed
67
flights
Thu
61
flights
Fri
64
flights
Sat
54
flights
Sun
60
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
90
Nonstop flights
430
Outbound / wk
323
Return / wk
Connections
Connection Landscape
Beyond nonstop. 1-stop and 2-stop options for STL to ORD.
1-STOP
One-Stop Connections
98
Hubs
~3h
Fastest
~31h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
4,363
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability
On-Time Performance
What to expect at each end of your journey.
Outbound
STL → ORD
58%
Frequent delays expected. Consider flexible booking.
Departing
58%
Arriving
82%
Return
ORD → STL
50%
Frequent delays expected. Consider flexible booking.
Departing
50%
Arriving
84%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots.
STL delays → ORD delays →
Alternatives
Other ways to reach Chicago from St Louis
Nearby airports with service to Chicago O'Hare International Airport.
| Metric | STL→ORD | SPI→ORD | UIN→ORD |
|---|---|---|---|
| Distance from STL | – | 84 mi | 94 mi |
| Nonstop airlines | 15 | 1 | 1 |
| Weekly flights | 430 | 27 | 12 |
| Flight time | 1h 15m | 1h 10m | 1h 35m |
| Departure OTP | 58% | – | – |
Springfield (SPI) to Chicago flights · Quincy (UIN) to Chicago flights · Columbia (COU) to Chicago flights
Airports within 200 miles of STL with service to Chicago O'Hare International Airport.
Know before you go
Travel Essentials
Practical planning for this route.
Time Difference
-1h
Chicago is 1 hour
behind
St Louis.
STL: EDT · ORD: CDT
When it's 6:00 PM in St Louis, it's 5:00 PM in Chicago.
STL: EDT · ORD: CDT
When it's 6:00 PM in St Louis, it's 5:00 PM in Chicago.
Distance & Flight Time
258 mi / 415 km
Nonstop flight time is approximately 1h 15m to 8h 0m.
Getting from ORD
CTA Blue Line runs 24/7 from O'Hare to downtown Chicago (45 min, $5). Taxis use a flat-rate zone system; downtown is around $40–45 plus tip. Ride-shares are typically $30–50.The Airport Transit System (ATS) connects all terminals and parking. Metra commuter rail does not serve O'Hare directly; transfer downtown via Blue Line.
Chicago Climate
Continental climate with four distinct seasons. Summers are warm and humid (25–32°C) with afternoon thunderstorms. Winters are cold (−10 to −2°C) with heavy snowfall that regularly delays flights December through March.
Spring and fall are mild but unpredictable. Pack layers. Lake Michigan moderates temperatures near the lakefront, but O'Hare sits inland and runs colder.
Facts
STL–ORD Quick Facts
Key statistics for the St Louis to Chicago route.
Route details
Distance258 mi / 415 km
Flight time1h 15m to 8h
Time difference-1 hour
Airlines (nonstop)15
Weekly flights430 out / 323 return
1-stop connections98 hubs
Origin: STL
IATA / ICAOSTL / KSTL
TimezoneAmerica/Indiana/Vincennes
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: ORD
Full nameChicago O'Hare International Airport
IATA / ICAOORD / KORD
TimezoneAmerica/Chicago
Passengers/yr80.0M
Elevation680 ft / 207 m
FAQ
Frequently Asked Questions
Common questions about STL to ORD flights.
Nonstop flights from St. Louis Lambert International Airport to Chicago O'Hare International Airport take approximately 1h 15m to 8h. The route covers 258 miles.
15 airlines operate nonstop service: American Airlines, Air Canada, Aeromexico, Alaska Airlines, avianca, Finnair, British Airways, Copa Airlines, Cathay Pacific, Aer Lingus, GoJet Airlines LLC d/b/a United Express, Gulf Air, Spirit Airlines, United Airlines and Southwest Airlines.
There are approximately 430 nonstop flights per week from STL to ORD. The return direction has about 323 weekly flights.
Yes, 1-stop connections are available through CMI, COU, PAH, SUS, DAY, MKC, LNK, CID, MSN, GRB, ICT, LEX, RST, CVG, LIT, DSM, BHM, SBN, ABE, FOK, TEB, TUL, RIC, OKC, YWG, BDL, APF, EGE, SUA, ASE, SCF, NAS, BZN, MBJ, ELP, SBA, BFI, GCM, PSP, SJC, SAT, CUN, MKE, BNA, OMA, MSY, DFW, BWI, ATL, MCI, IAH, DEN, MSP, CLE, AUS, DTW, DAL, PHL, IND, MCO, FLL, PIT, LGA, CLT, DCA, RSW, CMH, EWR, TPA, IAD, YYZ, RDU, SAN, CHS, LAS, SFO, LAX, PVR, JAX, MIA, PBI, FRA, SAV, BOS, SRQ, SLC, PHX, FAR, SMF, SEA, ECP, VPS, MYR, PNS, SJU, ABQ, PUJ and SJD. These options provide additional schedule flexibility.
Chicago is 1 hour behind St Louis.
Yes, return flights from ORD to STL are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.
Amtrak's Lincoln Service and Texas Eagle connect St. Louis Union Station to Chicago Union Station in 5.5–6 hours. The train is a genuine alternative for travelers with flexible schedules, as it avoids airport processing and drops off centrally in both cities. Flying wins on pure transit time, but train travel avoids O'Hare delay exposure.
United Express operates STL-ORD with regional aircraft as part of its O'Hare hub feed network. American Eagle and Southwest also serve the route. The short distance (about 260 miles) means most service is operated by regional jets or Boeing 737s on higher-frequency Southwest slots.
January through March carries the highest delay risk at both endpoints: ice storms and snow affect STL, while ORD sees lake-effect snow and severe cold. Tornado-producing thunderstorms are a spring risk at STL (March–May), occasionally causing ground stops. O'Hare's winter delay reputation affects the entire inbound funnel from STL.
St. Louis to Chicago O'Hare
STL–ORD spans 260 miles across the Midwest, making it one of the shorter commercial jet routes in the US. Six carriers provide service at roughly 283 weekly frequencies, with United Express accounting for a significant share given O'Hare's hub role. The route competes directly with Amtrak's downtown-to-downtown Lincoln Service, giving travelers a genuine multimodal choice.
Winter Disruption and Hub Context
Both St. Louis Lambert and O'Hare face serious winter weather exposure, and the combination of ice storms at STL and lake-effect disruptions at ORD creates one of the more reliably disrupted domestic corridors from November through March. O'Hare ground stops cascade delays backward to STL departures, making early-morning flights a practical hedge. The route primarily serves as an ORD feed for connecting passengers rather than a large standalone origin-destination market.