Nonstop flights from Chicago to St. Louis

3 airlines fly from 2 Chicago airports (ORD and MDW) to St. Louis (STL), with up to 20 flights a day.

ORDSTL

Routes

2 airport pairs

When they leave

Chicago time

7:00a11:00pFirst departure 7:00 AM, last 11:00 PM

Nine in the morning, 7:00 AM to 11:29 AM, then seven in the afternoon, 1:30 PM to 4:40 PM, then nine in the evening, 5:45 PM to 11:00 PM.

Every flight

Earliest first

7:00 AM→8:24 AMORD to STLAmerican AirlinesEmbraer 170Daily
7:05 AM→8:39 AMORD to STLUnited AirlinesEmbraer 175Mon, Wed, Thu, Fri, Sun
7:55 AM→9:15 AMMDW to STLSouthwest AirlinesBoeing 737-700Daily
8:40 AM→10:12 AMORD to STLUnited AirlinesCRJ 700Daily
9:20 AM→10:30 AMMDW to STLSouthwest AirlinesBoeing 737-700Mon, Thu, Fri, Sun
9:55 AM→11:05 AMMDW to STLSouthwest AirlinesBoeing 737-700Sat
10:10 AM→11:20 AMMDW to STLSouthwest AirlinesBoeing 737-700Tue, Wed
10:29 AM→12:02 PMORD to STLUnited AirlinesBoeing 737Daily
11:29 AM→12:54 PMORD to STLAmerican AirlinesCRJ 700Daily
1:30 PM→2:57 PMORD to STLUnited AirlinesCRJ 700Mon, Tue, Wed, Thu, Fri, Sun
1:30 PM→2:57 PMORD to STLUnited AirlinesCRJ 700Sat
2:00 PM→3:10 PMMDW to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
2:07 PM→3:38 PMORD to STLUnited AirlinesBoeing 737Daily
3:00 PM→4:24 PMORD to STLAmerican AirlinesEmbraer 175Daily
3:10 PM→4:20 PMMDW to STLSouthwest AirlinesBoeing 737-700Mon, Thu, Fri, Sun
3:35 PM→5:06 PMORD to STLUnited AirlinesCRJ 700Daily
4:40 PM→5:55 PMMDW to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Sat
5:45 PM→7:16 PMORD to STLUnited AirlinesCRJ 700Daily
5:50 PM→7:05 PMMDW to STLSouthwest AirlinesBoeing 737-700Mon, Tue, Wed, Thu, Fri, Sun
5:59 PM→7:27 PMORD to STLAmerican AirlinesEmbraer 170Daily
7:45 PM→9:17 PMORD to STLUnited AirlinesCRJ 700Daily
8:25 PM→9:35 PMMDW to STLSouthwest AirlinesBoeing 737Sun
8:29 PM→10:00 PMORD to STLUnited AirlinesAirbus A319Daily
8:55 PM→10:05 PMMDW to STLSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
9:30 PM→10:59 PMORD to STLUnited AirlinesCRJ 700Mon, Wed, Thu, Fri, Sat, Sun
11:00 PM→12:14 AM⁺¹ORD to STLAmerican AirlinesAirbus A319Daily

Schedules last checked Sep 20, 2026. Times are local.

Flying from Chicago to St. Louis

United Airlines flies most often, 8 to 10 times a day on the CRJ 700, Boeing 737, Airbus A319 and Embraer 175. American Airlines flies 5 times a day on the Embraer 170, Airbus A319, CRJ 700 and Embraer 175. Southwest Airlines flies 3 to 5 times a day on the Boeing 737-700, Boeing 737 MAX 8 and Boeing 737.

Flights run every day of the week, from 17 on Saturdays to 20 on Mondays, Wednesdays, Thursdays, Fridays and Sundays. The first arrival in St. Louis is at 8:24 AM and the last at 12:14 AM the next day.

ORD to STL is the busiest airport pair, with 102 flights a week, then MDW to STL with 33.

Flying back, St. Louis to Chicago has 135 nonstop flights a week.

Return flights

St. Louis to ChicagoView

Find the cheapest day to fly from Chicago to St. Louis.

Schedules as of Oct 9, 2026.