--- title: "St. Louis (STL) to Houston (IAH) flights: who flies it" description: "United Airlines flies St. Louis (STL) to Houston (IAH) nonstop about 43 times a week, scheduled at 2h 12m to 2h 31m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/stl-iah" url: "https://2lnr.com/routes/stl-iah.md" date_modified: "2026-10-18T05:10:47Z" --- # St. Louis to Houston (STL-IAH): nonstop flights and who flies them United Airlines flies nonstop between St. Louis (STL) and Houston (IAH), roughly 43 times a week. The timetable below shows the nonstop scheduled at 2h 12m to 2h 31m for the 668 miles. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See STL to IAH on the interactive map [Get started free](https://2lnr.com/login) 43 Flights a week, 4-week average 2h 12m to 2h 31m Scheduled flight time 668 mi Nonstop distance Free To get started ## St. Louis to Houston flight schedule Scheduled nonstop departures for STL to IAH starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from St. Louis (STL) to Houston (IAH) | Date | Flight | Airline | Departs STL | Arrives IAH | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | UA 1371 | United Airlines | 06:15 | 08:27 | 2h 12m | [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md) | | Fri, Oct 23 | UA 4595 | United Airlines | 08:35 | 10:52 | 2h 17m | CR5 | | Fri, Oct 23 | UA 6213 | United Airlines | 11:10 | 13:25 | 2h 15m | [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md) | | Fri, Oct 23 | UA 652 | United Airlines | 15:12 | 17:25 | 2h 13m | [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md) | | Sat, Oct 24 | UA 1371 | United Airlines | 06:15 | 08:27 | 2h 12m | Boeing 737 MAX 8 | | Sat, Oct 24 | UA 4595 | United Airlines | 08:35 | 10:52 | 2h 17m | CR5 | | Sat, Oct 24 | UA 6213 | United Airlines | 11:10 | 13:25 | 2h 15m | Embraer E175 | | Sat, Oct 24 | UA 652 | United Airlines | 15:12 | 17:25 | 2h 13m | Boeing 737-800 | | Sun, Oct 25 | UA 1371 | United Airlines | 06:15 | 08:27 | 2h 12m | Boeing 737 MAX 8 | | Sun, Oct 25 | UA 4524 | United Airlines | 08:35 | 11:01 | 2h 26m | CR5 | | Sun, Oct 25 | UA 4028 | United Airlines | 08:50 | 11:08 | 2h 18m | Embraer E175 | | Sun, Oct 25 | UA 6213 | United Airlines | 11:10 | 13:25 | 2h 15m | Embraer E175 | | Sun, Oct 25 | UA 4045 | United Airlines | 14:56 | 17:25 | 2h 29m | Embraer E175 | | Sun, Oct 25 | UA 1925 | United Airlines | 16:17 | 18:35 | 2h 18m | [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md) | | Sun, Oct 25 | UA 6225 | United Airlines | 17:55 | 20:25 | 2h 30m | Embraer E175 | | Mon, Oct 26 | UA 1371 | United Airlines | 06:15 | 08:27 | 2h 12m | Boeing 737 MAX 8 | | Mon, Oct 26 | UA 4524 | United Airlines | 08:35 | 11:01 | 2h 26m | CR5 | | Mon, Oct 26 | UA 4028 | United Airlines | 08:50 | 11:08 | 2h 18m | Embraer E175 | | Mon, Oct 26 | UA 6213 | United Airlines | 11:10 | 13:25 | 2h 15m | Embraer E175 | | Mon, Oct 26 | UA 5727 | United Airlines | 14:55 | 17:19 | 2h 24m | Embraer E175 | | Mon, Oct 26 | UA 4075 | United Airlines | 14:56 | 17:25 | 2h 29m | Embraer E175 | | Mon, Oct 26 | UA 4045 | United Airlines | 17:55 | 20:25 | 2h 30m | Embraer E175 | | Tue, Oct 27 | UA 1371 | United Airlines | 06:15 | 08:35 | 2h 20m | Airbus A319 | | Tue, Oct 27 | UA 4524 | United Airlines | 08:35 | 11:01 | 2h 26m | CR5 | | Tue, Oct 27 | UA 4028 | United Airlines | 08:50 | 11:08 | 2h 18m | Embraer E175 | | Tue, Oct 27 | UA 6213 | United Airlines | 11:10 | 13:25 | 2h 15m | Embraer E175 | | Tue, Oct 27 | UA 4075 | United Airlines | 14:55 | 17:19 | 2h 24m | Embraer E175 | | Tue, Oct 27 | UA 4045 | United Airlines | 14:56 | 17:25 | 2h 29m | Embraer E175 | | Wed, Oct 28 | UA 1371 | United Airlines | 06:15 | 08:35 | 2h 20m | Airbus A319 | | Wed, Oct 28 | UA 4524 | United Airlines | 08:30 | 11:01 | 2h 31m | CR5 | | Wed, Oct 28 | UA 4028 | United Airlines | 08:50 | 11:08 | 2h 18m | Embraer E175 | | Wed, Oct 28 | UA 6213 | United Airlines | 11:10 | 13:25 | 2h 15m | Embraer E175 | | Wed, Oct 28 | UA 4075 | United Airlines | 14:55 | 17:19 | 2h 24m | Embraer E175 | | Wed, Oct 28 | UA 4045 | United Airlines | 17:55 | 20:25 | 2h 30m | Embraer E175 | | Thu, Oct 29 | UA 1371 | United Airlines | 06:15 | 08:35 | 2h 20m | Airbus A319 | | Thu, Oct 29 | UA 4524 | United Airlines | 08:35 | 11:01 | 2h 26m | CR5 | | Thu, Oct 29 | UA 4028 | United Airlines | 08:50 | 11:08 | 2h 18m | Embraer E175 | | Thu, Oct 29 | UA 6213 | United Airlines | 11:10 | 13:25 | 2h 15m | Embraer E175 | | Thu, Oct 29 | UA 4075 | United Airlines | 14:55 | 17:19 | 2h 24m | Embraer E175 | | Thu, Oct 29 | UA 4045 | United Airlines | 17:55 | 20:25 | 2h 30m | Embraer E175 | Showing all 40 scheduled STL to IAH departures across 7 days with service, starting October 23, 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 STL to IAH date on the interactive map ## Aircraft on the St. Louis to Houston nonstop United Airlines flies the departures in the schedule table on this page with the [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md), the Bombardier CRJ, the [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md), the [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md), and the [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full STL to IAH nonstop schedule This page carries the full STL to IAH nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each STL to IAH nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See STL to IAH on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying St. Louis to Houston nonstop Carriers operating STL to IAH nonstop in the current schedule. - [United Airlines (UA) route map](https://2lnr.com/routes/airlines/ua.md)\ [The aircraft UA flies](https://2lnr.com/seatmaps/ua.md) See STL to IAH on the interactive map → ## Frequently asked questions about STL to IAH **How long is the flight from St. Louis (STL) to Houston (IAH)?** Scheduled flight times from St. Louis (STL) to Houston (IAH) run from 2h 12m to 2h 31m 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 STL to IAH?** United Airlines is currently the only airline flying STL to IAH nonstop. 2LNR doesn't show award or upgrade space for it on STL to IAH, so this page carries the schedule rather than a space claim. **How many flights a week are there from STL to IAH?** About 43 nonstop flights a week run between St. Louis (STL) and Houston (IAH) 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 STL to IAH depart?** Scheduled STL to IAH nonstops in the next 7 days with service leave between 06:15 and 17:55, local time at St. Louis. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate STL to IAH nonstop?** The schedule table on this page lists 11 flight numbers for STL to IAH nonstops, including UA 652, UA 1371, UA 4028, UA 4045, UA 4075, UA 4524, UA 4595, and UA 6213 on United Airlines. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on STL to IAH?** Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on STL to IAH. The page carries the full STL to IAH nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [IAH to STL nonstop flights](https://2lnr.com/routes/iah-stl.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from St. Louis (STL)](https://2lnr.com/routes/stl.md), or [every route from Houston (IAH)](https://2lnr.com/routes/iah.md). Nonstops to Houston (IAH) from other airports within 150 miles of St. Louis (STL): - [Paducah (PAH) to Houston (IAH)](https://2lnr.com/routes/pah-iah.md), 146 miles from STL Distances are great-circle between the airports, not driving distance. - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) ## See the full STL to IAH 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. [Get started free](https://2lnr.com/login)