Chicago to St Louis (ORD–STL) — Airlines, Schedules & Connections
Flight Schedule
156 flights
Verified 45m 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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No data
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✧ 2-Stop Connections
Separate tickets — book each leg independently. Collect and recheck bags at each hub.
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Chicago to St Louis
14 carriers, 321 flights/week nonstop.
14 Airlines
321 Flights/wk
258 mi
0h 25m nonstop
+1h ahead
98 1-stop hubs
ORD–STL is served by 14 airlines with nonstop service. American Airlines, United Airlines and Alaska Airlines lead the route. The flight covers 258 miles in approximately 0h 25m. Beyond nonstop, 98 hubs offer 1-stop connections.
Carriers on this route
Airline Landscape
All carriers operating nonstop ORD–STL service, compared side by side.
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AA American Airlines | 102 | 319, 738, 7M8, CR7, E70, E75 | 1h13-1h31 | Oneworld | – | |
| UA United Airlines | 100 | 739, 7M8, CR5, CR7, E75L, E7W | 0h25-2h14 | Star Alliance | – | |
| AS Alaska Airlines | 41 | 319, CR7, E70 | 1h14-1h30 | Oneworld | – | |
| BA British Airways | 21 | CR7, E70, E75 | 1h22-1h31 | Oneworld | – | |
| EI Aer Lingus | 14 | E70, E75 | 1h20-1h25 | – | – | |
| AC Air Canada | 7 | E7W | 1h31 | Star Alliance | – | |
| AY Finnair | 7 | 319 | 1h24 | Oneworld | – | |
| CM Copa Airlines | 7 | CR5 | 1h24 | Star Alliance | – | |
| CX Cathay Pacific | 7 | E70 | 1h20 | Oneworld | – | |
| G7 GoJet Airlines LLC d/b/a United Express | 7 | CR5 | 1h24 | – | – | |
| GF Gulf Air | 7 | E75 | 1h25 | – | – | |
| F9 Frontier | 1 | – | – | – | – | |
| IB Iberia | 1 | E75 | 1h31 | Oneworld | – | |
| OO SkyWest Airlines | 1 | – | – | – | – |
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, ORD to STL direction.
Mon
50
flights
Tue
44
flights
Wed
47
flights
Thu
47
flights
Fri
47
flights
Sat
40
flights
Sun
46
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
63
Nonstop flights
321
Outbound / wk
473
Return / wk
Connections
Connection Landscape
Beyond nonstop. 1-stop and 2-stop options for ORD to STL.
1-STOP
One-Stop Connections
98
Hubs
~3h
Fastest
~40h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
4,415
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
ORD → STL
29%
Frequent delays expected. Consider flexible booking.
Departing
29%
Arriving
77%
Return
STL → ORD
78%
Generally reliable. Most flights run on time.
Departing
78%
Arriving
88%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots.
ORD delays → STL delays →
Alternatives
Other ways to reach St Louis from Chicago
Nearby airports with service to St. Louis Lambert International Airport.
| Metric | ORD→STL | MDW→STL | MKE→STL |
|---|---|---|---|
| Distance from ORD | – | 15 mi | 67 mi |
| Nonstop airlines | 14 | 1 | 2 |
| Weekly flights | 321 | 68 | 26 |
| Flight time | 0h 25m | 1h 10m | 1h 20m |
| Departure OTP | 29% | – | – |
Chicago (MDW) to St Louis flights · Milwaukee (MKE) to St Louis flights · West Lafayette (LAF) to St Louis flights
Airports within 200 miles of ORD with service to St. Louis Lambert International Airport.
Know before you go
Travel Essentials
Practical planning for this route.
Time Difference
+1h
St Louis is 1 hour
ahead of
Chicago.
ORD: CDT · STL: EDT
When it's 6:00 PM in Chicago, it's 7:00 PM in St Louis.
ORD: CDT · STL: EDT
When it's 6:00 PM in Chicago, it's 7:00 PM in St Louis.
Distance & Flight Time
258 mi / 415 km
Nonstop flight time is approximately 0h 25m to 2h 14m.
Getting to ORD
CTA Blue Line runs 24/7 from downtown Loop stations to O'Hare (45 min, $5). Pace buses serve suburbs. Ride-shares cost $35–55 from downtown depending on traffic; add 30+ minutes during rush hour on the Kennedy Expressway.Economy parking lots E/F connect via ATS people mover. Terminal 5 (international) is separate from Terminals 1–3; allow extra time for inter-terminal transfers.
Facts
ORD–STL Quick Facts
Key statistics for the Chicago to St Louis route.
Route details
Distance258 mi / 415 km
Flight time0h 25m to 2h 14m
Time difference+1 hour
Airlines (nonstop)14
Weekly flights321 out / 473 return
1-stop connections98 hubs
Origin: 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 ORD to STL flights.
Nonstop flights from Chicago O'Hare International Airport to St. Louis Lambert International Airport take approximately 0h 25m to 2h 14m. The route covers 258 miles.
14 airlines operate nonstop service: American Airlines, Air Canada, Alaska Airlines, Finnair, British Airways, Copa Airlines, Cathay Pacific, Aer Lingus, Frontier, GoJet Airlines LLC d/b/a United Express, Gulf Air, Iberia, SkyWest Airlines and United Airlines.
There are approximately 321 nonstop flights per week from ORD to STL. The return direction has about 473 weekly flights.
Yes, 1-stop connections are available through BKL, BUF, LWB, FSD, MKC, DAY, GRR, DSM, TEB, MMU, HHH, LIT, ILM, RIL, ORF, TUL, ICT, FWA, HPN, BDL, AVL, ABE, EGE, SAF, ASE, JAC, SCF, EYW, BZN, YUL, NAS, HOU, MYR, PSP, SBD, SJC, VPS, MDW, ECP, CMH, MEM, CLE, BNA, PIT, PHL, EWR, IAH, IND, RDU, ATL, DAL, MSP, MCI, ATW, MSY, DTW, DCA, MCO, BWI, OMA, JAX, DFW, MKE, DEN, AUS, CHS, MIA, YYZ, IAD, CUN, CLT, RSW, PHX, LGA, SAT, BOS, LAS, SJU, FLL, FRA, SAV, PNS, SMF, TPA, SLC, LAX, SRQ, SFO, SAN, PBI, SEA, SUS, OKC, PVR, SJD, PUJ, HND and CVG. These options provide additional schedule flexibility.
St Louis is 1 hour ahead of Chicago.
Yes, return flights from STL to ORD 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.
American Airlines operates the most frequencies on ORD–STL, using regional jets from Envoy Air and SkyWest. Southwest Airlines also runs nonstop service from Chicago Midway (MDW) to St. Louis Lambert, not O'Hare. United has reduced presence on this short corridor. Spirit occasionally lists the route. The 475 km segment is short enough that competition from driving (4.5 hours on I-55) and Amtrak's Lincoln Service (5.5 hours) keeps air fares under sustained pressure.
The ORD–STL segment is predominantly served by Embraer ERJ-175 and ERJ-145 regional jets operated by Envoy Air and SkyWest under American Eagle branding. The short block time of 55 minutes and thin load factors make mainline narrowbody service uneconomical on most departures. Seat counts run 50 to 76 depending on variant.
For passengers departing from Chicago's Loop or Union Station, Amtrak Lincoln Service reaches St. Louis in 5 to 5.5 hours and costs $25 to $65 depending on advance booking. Door-to-door, the time difference with flying shrinks significantly once O'Hare check-in, security, taxi, and STL ground transport are factored in. The train is competitive for passengers not connecting onward from St. Louis.
Chicago O'Hare to St. Louis: Short-Haul Corridor Under Multimodal Pressure
ORD–STL is a thin short-haul route operating in the shadow of stronger alternatives. American Eagle regional jets carry most of the nonstop O'Hare capacity on 55-minute blocks. The segment is one where the operational math barely works: short block times, low yield, and meaningful competition from I-55 driving and Amtrak's Lincoln Service keep seat counts and frequencies modest. Southwest's stronger presence from Midway means the two Chicago airports collectively serve STL with more combined capacity than O'Hare alone.
St. Louis Lambert and Its Utilization Gap
Lambert–St. Louis International is a large airport built for a hub traffic level it no longer sees following American's hub closure and TWA's collapse. Terminal 1 handles American and its regional partners; Terminal 2 handles Southwest and other carriers. The airport's two-terminal configuration was originally designed for peak hub operations; current traffic uses it well below design capacity, which means short lines and fast security as a practical benefit. MetroLink light rail runs from the airport to downtown St. Louis in 40 minutes for $2.50, providing reliable landside access.