Nonstop flights from Houston to St. Louis

2 airlines fly from 2 Houston airports (HOU and IAH) to St. Louis (STL), with up to 10 flights a day.

HOUSTL

Routes

2 airport pairs

When they leave

Houston time

5:30a10:40pFirst departure 5:30 AM, last 10:40 PM

Seven in the morning, 5:30 AM to 11:05 AM, then six in the afternoon, 12:04 PM to 3:55 PM, then seven in the evening, 5:10 PM to 10:40 PM.

Every flight

Earliest first

5:30 AM→7:30 AMHOU to STLSouthwest AirlinesBoeing 737 MAX 8Thu, Fri
6:40 AM→8:40 AMHOU to STLSouthwest AirlinesBoeing 737 MAX 8Sun
7:20 AM→9:20 AMHOU to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Thu, Fri, Sat, Sun
7:20 AM→9:25 AMHOU to STLSouthwest AirlinesBoeing 737 MAX 8Mon
8:00 AM→10:10 AMIAH to STLUnited AirlinesEmbraer 175Mon, Tue, Wed, Thu, Fri
8:00 AM→10:10 AMIAH to STLUnited AirlinesEmbraer 175Sun
10:35 AM→12:40 PMHOU to STLSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Thu, Fri
10:40 AM→12:45 PMHOU to STLSouthwest AirlinesBoeing 737-700Mon
11:05 AM→1:05 PMHOU to STLSouthwest AirlinesBoeing 737 MAX 8Thu, Fri
12:04 PM→2:15 PMIAH to STLUnited AirlinesEmbraer 175Mon, Tue, Thu, Fri, Sun
12:04 PM→2:13 PMIAH to STLUnited AirlinesCRJ 700Wed, Sat
1:20 PM→3:20 PMHOU to STLSouthwest AirlinesBoeing 737 MAX 8Mon
3:00 PM→5:00 PMHOU to STLSouthwest AirlinesBoeing 737Mon
3:36 PM→5:50 PMIAH to STLUnited AirlinesEmbraer 175Mon, Thu
3:52 PM→6:04 PMIAH to STLUnited AirlinesAirbus A319Tue
3:55 PM→5:55 PMHOU to STLSouthwest AirlinesBoeing 737Tue, Wed, Sat, Sun
5:10 PM→7:10 PMHOU to STLSouthwest AirlinesBoeing 737-700Mon
5:55 PM→7:55 PMHOU to STLSouthwest AirlinesBoeing 737Tue, Wed, Sat, Sun
6:15 PM→8:29 PMIAH to STLUnited AirlinesEmbraer 175Sun
7:50 PM→9:50 PMHOU to STLSouthwest AirlinesBoeing 737-700Thu, Fri
8:15 PM→10:27 PMIAH to STLUnited AirlinesCRJ 700Daily
9:00 PM→11:00 PMHOU to STLSouthwest AirlinesBoeing 737-700Sun
10:40 PM→12:45 AM⁺¹HOU to STLSouthwest AirlinesBoeing 737 MAX 8Mon

Schedules last checked Sep 21, 2026. Times are local.

Flying from Houston to St. Louis

Southwest Airlines flies most often, 3 to 6 times a day on the Boeing 737 MAX 8, Boeing 737-700 and Boeing 737. United Airlines flies 2 to 4 times a day on the Embraer 175, CRJ 700 and Airbus A319.

Flights run every day of the week, from 5 on Saturdays to 10 on Mondays. The first arrival in St. Louis is at 7:30 AM and the last at 12:45 AM the next day.

HOU to STL is the busiest airport pair, with 32 flights a week, then IAH to STL with 24.

Flying back, St. Louis to Houston has 63 nonstop flights a week.

Return flights

St. Louis to HoustonView

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

Schedules as of Oct 9, 2026.