Houston to St. Louis (IAH-STL): nonstop flights and who flies them

United Airlines flies nonstop between Houston (IAH) and St. Louis (STL), roughly 43 times a week. The timetable below shows the nonstop scheduled at 2h 4m to 2h 15m for the 668 miles.

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

Updated .

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43
Flights a week, 4-week average
2h 4m to 2h 15m
Scheduled flight time
668 mi
Nonstop distance
Free
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Houston to St. Louis flight schedule

Scheduled nonstop departures for IAH to STL starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Houston (IAH) to St. Louis (STL)
Date Flight Airline Departs IAH Arrives STL Duration Aircraft
UA 6214United Airlines08:0010:102h 10mEmbraer E175
UA 2042United Airlines11:5814:102h 12mBoeing 737-800
UA 4479United Airlines18:0520:162h 11mCR5
UA 1528United Airlines20:1522:302h 15mBoeing 737 MAX 8
UA 6214United Airlines08:0010:102h 10mEmbraer E175
UA 2042United Airlines11:5814:102h 12mBoeing 737-800
UA 4479United Airlines18:0520:162h 11mCR5
UA 1528United Airlines20:1522:302h 15mBoeing 737 MAX 8
UA 6214United Airlines08:0010:102h 10mEmbraer E175
UA 2042United Airlines11:5814:102h 12mBoeing 737-800
UA 4479United Airlines18:0520:162h 11mCR5
UA 1528United Airlines20:1522:302h 15mAirbus A320
UA 6214United Airlines08:0010:102h 10mEmbraer E175
UA 6243United Airlines12:0414:132h 9mEmbraer E175
UA 2042United Airlines14:3116:352h 4mAirbus A319
UA 6160United Airlines15:3117:422h 11mEmbraer E175
UA 4425United Airlines16:3018:382h 8mCR5
UA 579United Airlines20:1522:202h 5mAirbus A319
UA 6214United Airlines08:0010:102h 10mEmbraer E175
UA 5729United Airlines12:0514:132h 8mEmbraer E175
UA 6243United Airlines12:0514:132h 8mEmbraer E175
UA 6160United Airlines15:3617:502h 14mEmbraer E175
UA 4425United Airlines16:3018:382h 8mCR5
UA 579United Airlines20:1522:202h 5mAirbus A319
UA 2804United Airlines20:2022:262h 6mAirbus A319
UA 6214United Airlines08:0010:102h 10mEmbraer E175
UA 6243United Airlines12:0514:132h 8mEmbraer E175
UA 2042United Airlines14:3116:352h 4mAirbus A319
UA 4425United Airlines16:3018:382h 8mCR5
UA 6160United Airlines16:3018:382h 8mEmbraer E175
UA 579United Airlines20:1522:202h 5mAirbus A319
UA 2804United Airlines20:2022:262h 6mAirbus A319
UA 6214United Airlines08:0010:102h 10mEmbraer E175
UA 6243United Airlines12:0514:132h 8mEmbraer E175
UA 6160United Airlines14:4016:502h 10mEmbraer E175
UA 4425United Airlines16:3018:382h 8mCR5
UA 579United Airlines20:1522:202h 5mAirbus A319
UA 2804United Airlines20:2022:262h 6mAirbus A319

Showing all 38 scheduled IAH to STL departures across 7 days with service, starting October 22, 2026. Later dates are 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every IAH to STL date on the interactive map

Aircraft on the Houston to St. Louis nonstop

United Airlines flies the departures in the schedule table on this page with the Embraer E175, the Airbus A319, the Bombardier CRJ, the Boeing 737-800, the Boeing 737 MAX 8, and the Airbus A320. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAH to STL nonstop schedule

This page carries the full IAH to STL nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each IAH to STL nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

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

Airlines flying Houston to St. Louis nonstop

Carriers operating IAH to STL nonstop in the current schedule.

See IAH to STL on the interactive map →

Frequently asked questions about IAH to STL

How long is the flight from Houston (IAH) to St. Louis (STL)?
Scheduled flight times from Houston (IAH) to St. Louis (STL) run from 2h 4m to 2h 15m across the departures in the schedule table on this page. The nonstop covers about 668 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from IAH to STL?
United Airlines is currently the only airline flying IAH to STL nonstop. 2LNR doesn't show award or upgrade space for it on IAH to STL, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAH to STL?
About 43 nonstop flights a week run between Houston (IAH) and St. Louis (STL) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAH to STL depart?
Scheduled IAH to STL nonstops in the next 7 days with service leave between 08:00 and 20:20, local time at Houston. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAH to STL nonstop?
The schedule table on this page lists 10 flight numbers for IAH to STL nonstops, including UA 579, UA 1528, UA 2042, UA 4425, UA 4479, UA 6160, UA 6214, and UA 6243 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAH to STL?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAH to STL. The page carries the full IAH to STL nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAH to STL nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

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