Chicago to St. Louis (ORD-STL): nonstop upgrade & award space

United Airlines and American Airlines fly nonstop between Chicago (ORD) and St. Louis (STL), roughly 133 times a week. With United Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. 2LNR tracks confirmed upgrade and award space on American Airlines, on every ORD to STL departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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133
Nonstop flights a week
258 mi
Nonstop distance
Free
To get started

Chicago to St. Louis flight schedule

Scheduled nonstop departures for ORD to STL, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Chicago (ORD) to St. Louis (STL)
Date Flight Airline Departs ORD Arrives STL Duration Aircraft
UA 4613United Airlines08:4010:121h 32mCR5
AA 2818American Airlines08:5510:181h 23m319
UA 775United Airlines10:2511:571h 32m738
AA 6355American Airlines11:4813:161h 28mCR7
UA 4514United Airlines12:4514:151h 30mCR5
UA 4581United Airlines12:5514:231h 28mCR5
UA 4479United Airlines13:3014:571h 27mCR5
UA 2000United Airlines14:0715:381h 31m738
AA 4537American Airlines15:0716:401h 33mE75
AA 4645American Airlines15:1716:481h 31mE75
UA 4416United Airlines15:3517:061h 31mCR5
UA 4412United Airlines17:4519:161h 31mCR5
AA 4144American Airlines18:0019:261h 26mE70
UA 4518United Airlines18:2920:001h 31mCR5
AA 2444American Airlines19:1820:441h 26m738
UA 2144United Airlines19:5521:261h 31m739
UA 1032United Airlines20:0021:311h 31m73G
UA 4576United Airlines21:3022:591h 29mCR5
AA 3069American Airlines23:0500:271h 22m738
UA 4613United Airlines08:4010:121h 32mCR5
AA 2818American Airlines08:5510:181h 23m319
UA 775United Airlines10:2511:571h 32m738
AA 6355American Airlines11:4813:161h 28mCR7
UA 4514United Airlines12:4514:151h 30mCR5
UA 4581United Airlines12:5514:231h 28mCR5
UA 4479United Airlines13:3014:571h 27mCR5
UA 2000United Airlines14:0715:381h 31m738
AA 4537American Airlines15:0716:401h 33mE75
AA 4645American Airlines15:1716:481h 31mE75
UA 4416United Airlines15:3517:061h 31mCR5
UA 4412United Airlines17:4519:161h 31mCR5
UA 4518United Airlines18:2920:001h 31mCR5
AA 2444American Airlines19:1820:441h 26m738
UA 2144United Airlines19:5521:261h 31m739
UA 1032United Airlines20:2922:001h 31m319
UA 4576United Airlines21:3022:591h 29mCR5
AA 3069American Airlines23:0500:271h 22m738
UA 4613United Airlines08:4010:121h 32mCR5
AA 2818American Airlines08:5510:181h 23m319
UA 775United Airlines10:2912:021h 33m73G

Showing the first 40 of 123 scheduled ORD to STL departures across the next 7 days with service. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every ORD to STL date on the interactive map

Confirmed upgrade & award space on ORD to STL departures

2LNR tracks confirmed upgrade and award space on American Airlines, segment by segment and date by date. Open the calendar for Chicago to St. Louis to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each ORD to STL departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See ORD to STL on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Chicago to St. Louis nonstop

Carriers operating ORD to STL nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See ORD to STL on the interactive map →

Frequently asked questions about ORD to STL

How far is St. Louis from Chicago?
ORD to STL covers about 258 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from ORD to STL?
United Airlines and American Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines.
How many flights a week are there from ORD to STL?
About 133 nonstop flights a week run between Chicago and St. Louis in the current schedule, operated by United Airlines and American Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from ORD to STL depart?
Scheduled ORD to STL nonstops in the next 7 days with service leave between 08:40 and 23:05, local time at Chicago. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on ORD to STL?
Open the ORD to STL route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss ORD to STL upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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