St Louis to Chicago (STL–ORD) — Airlines, Schedules & Connections
Flight Schedule
187 flights
Verified 16m ago
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No flights match your filters.
No nonstop flights on this route. connecting options below.
✦ 1-Stop
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St Louis to Chicago
9 carriers, 650 flights/week nonstop.
9 Airlines
650 Flights/wk
258 mi
0h 52m nonstop
138 1-stop hubs
STL–ORD is served by 9 airlines with nonstop service. United Airlines, American Airlines and GoJet Airlines lead the route. The flight covers 258 miles in approximately 0h 52m. Beyond nonstop, 138 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 |
|---|---|---|---|---|---|---|
| UA United Airlines Also: AC, AV, CM, LH, NH, NZ, OS | 177 | 319, 320, 739, 7M8, 7M9, CR5, CR7, E7W | 1h-1h38 | Star Alliance | AC, AV, CM, LH, NH, NZ, OS | |
| AA American Airlines Also: AS, AY, BA, CX, EI, GF, IB, JL, QR, RJ | 85 | 319, 7M8, CR7, E70, E75 | 1h18-1h44 | Oneworld | AS, AY, BA, CX, EI, GF, IB, JL, QR, RJ | |
| G7 GoJet Airlines | 7 | CR5 | 1h33 | – | – | |
| AM Aeromexico | 0 | – | – | SkyTeam | – | |
| DL Delta Air Lines | 0 | – | – | SkyTeam | – | |
| F9 Frontier | 0 | – | – | – | – | |
| NK Spirit Airlines | 0 | – | – | – | – | |
| OO SkyWest Airlines | 0 | – | – | – | – | |
| WN Southwest Airlines | 0 | – | – | – | – |
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
95
flights
Tue
89
flights
Wed
93
flights
Thu
93
flights
Fri
93
flights
Sat
89
flights
Sun
97
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
101
Nonstop flights
650
Outbound / wk
523
Return / wk
Connections
Connection Landscape
Beyond nonstop. 1-stop and 2-stop options for STL to ORD.
1-STOP
One-Stop Connections
138
Hubs
~3h
Fastest
~37h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
4,450
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.
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 | 9 | 2 | 1 |
| Weekly flights | 650 | 21 | 12 |
| Flight time | 0h 52m | 1h 15m | 1h 35m |
| Departure OTP | 90% | – | – |
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
0h
Chicago is 0 hours
the same as
St Louis.
STL: CDT · ORD: CDT
When it's 6:00 PM in St Louis, it's 6:00 PM in Chicago.
STL: CDT · ORD: CDT
When it's 6:00 PM in St Louis, it's 6:00 PM in Chicago.
Distance & Flight Time
258 mi / 415 km
Nonstop flight time is approximately 0h 52m to 1h 44m.
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 time0h 52m to 1h 44m
Time difference0 hours
Airlines (nonstop)9
Weekly flights650 out / 523 return
1-stop connections138 hubs
Origin: STL
IATA / ICAOSTL / KSTL
TimezoneAmerica/Chicago
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 0h 52m to 1h 44m. The route covers 258 miles.
9 airlines operate nonstop service: American Airlines, Aeromexico, Delta Air Lines, Frontier, GoJet Airlines, Spirit Airlines, SkyWest Airlines, United Airlines and Southwest Airlines. Plus 17 codeshare partners.
There are approximately 650 nonstop flights per week from STL to ORD. The return direction has about 523 weekly flights.
Yes, 1-stop connections are available through SUS, CMI, MDW, IND, COU, MKC, PAH, DAY, GRB, DSM, LAN, PTK, BMI, CID, MSN, LNK, LUK, BHM, ICT, LEX, LIT, CVG, RST, TEB, GPT, APA, GRR, ABE, SBN, FTW, HOU, CHO, FOK, CXO, RAP, AGS, TUL, APF, BDL, FRG, ILM, SYR, FAR, ISM, BED, TVC, RIC, OKC, PBI, FPR, YWG, EGE, SUA, MLB, ASE, NAS, TUS, SCF, BZN, VNY, UDD, BOI, SUN, ELP, RNO, MBJ, FCA, SBA, BFI, SJC, ONT, PVR, PSP, GCM, ABQ, SNA, SJU, CUN, MRY, SAT, MYR, IAH, BNA, LGA, MKE, ATL, MSY, DAL, LAX, MSP, DTW, OMA, MCI, DFW, PIT, CLE, DEN, KOA, CLT, CMH, BWI, PHL, SAV, DCA, IAD, EWR, RDU, PDX, BOS, SFO, YYZ, JAX, AUS, SMF, SEA, LAS, TPA, SGF, CHS, FLL, RSW, SLC, SRQ, MCO, PHX, SAN, ECP, YUL, MIA, FRA, JFK, VPS, HND, PNS, PUJ, SJD, CMA and LHR. These options provide additional schedule flexibility.
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.