Chicago to St Louis (ORD–STL) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
ORD–STL is served by 5 airlines with nonstop service. United Airlines, American Airlines and Frontier lead the route. The flight covers 258 miles in approximately 1h 28m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: AC, AV, CM, EK, LH, NZ, OS | 98 | 320, 738, 73G, 7M8, 7M9, CR5, CR7, E75L, E7W | 1h11-1h35 | Star Alliance | AC, AV, CM, EK, LH, NZ, OS | |
| AA American Airlines Also: AS, AY, BA, CX, EI, GF, IB, QR, RJ | 73 | 319, CR7, E70, E75, E75L | 1h14-1h33 | Oneworld | AS, AY, BA, CX, EI, GF, IB, QR, RJ | |
| F9 Frontier | 1 | – | – | – | – | |
| G7 GoJet Airlines | 0 | – | – | – | – | |
| OO SkyWest Airlines | 0 | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach St Louis from Chicago
| Metric | ORD→STL | MDW→STL | RFD→STL |
|---|---|---|---|
| Distance from ORD | – | 15 mi | 63 mi |
| Nonstop airlines | 5 | 9 | 1 |
| Weekly flights | 419 | 70 | – |
| Flight time | 1h 28m | 0h 58m | 1h 53m |
| Departure OTP | 24% | – | – |
Travel Essentials
ORD: CDT · STL: CDT
When it's 6:00 PM in Chicago, it's 6:00 PM in St Louis.
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.
ORD–STL Quick Facts
Frequently Asked Questions
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.