--- title: "Houston (IAH) to St. Louis (STL) flights: who flies it" description: "United Airlines flies Houston (IAH) to St. Louis (STL) nonstop about 43 times a week, scheduled at 2h 4m to 2h 15m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/iah-stl" url: "https://2lnr.com/routes/iah-stl.md" date_modified: "2026-10-18T05:10:47Z" --- # 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 October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See IAH to STL on the interactive map [Get started free](https://2lnr.com/login) 43 Flights a week, 4-week average 2h 4m to 2h 15m Scheduled flight time 668 mi Nonstop distance Free To get started ## 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. Scheduled nonstop departures from Houston (IAH) to St. Louis (STL) | Date | Flight | Airline | Departs IAH | Arrives STL | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | UA 6214 | United Airlines | 08:00 | 10:10 | 2h 10m | [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md) | | Thu, Oct 22 | UA 2042 | United Airlines | 11:58 | 14:10 | 2h 12m | [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md) | | Thu, Oct 22 | UA 4479 | United Airlines | 18:05 | 20:16 | 2h 11m | CR5 | | Thu, Oct 22 | UA 1528 | United Airlines | 20:15 | 22:30 | 2h 15m | [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md) | | Fri, Oct 23 | UA 6214 | United Airlines | 08:00 | 10:10 | 2h 10m | Embraer E175 | | Fri, Oct 23 | UA 2042 | United Airlines | 11:58 | 14:10 | 2h 12m | Boeing 737-800 | | Fri, Oct 23 | UA 4479 | United Airlines | 18:05 | 20:16 | 2h 11m | CR5 | | Fri, Oct 23 | UA 1528 | United Airlines | 20:15 | 22:30 | 2h 15m | Boeing 737 MAX 8 | | Sat, Oct 24 | UA 6214 | United Airlines | 08:00 | 10:10 | 2h 10m | Embraer E175 | | Sat, Oct 24 | UA 2042 | United Airlines | 11:58 | 14:10 | 2h 12m | Boeing 737-800 | | Sat, Oct 24 | UA 4479 | United Airlines | 18:05 | 20:16 | 2h 11m | CR5 | | Sat, Oct 24 | UA 1528 | United Airlines | 20:15 | 22:30 | 2h 15m | [Airbus A320](https://2lnr.com/seatmaps/ua/a320.md) | | Sun, Oct 25 | UA 6214 | United Airlines | 08:00 | 10:10 | 2h 10m | Embraer E175 | | Sun, Oct 25 | UA 6243 | United Airlines | 12:04 | 14:13 | 2h 9m | Embraer E175 | | Sun, Oct 25 | UA 2042 | United Airlines | 14:31 | 16:35 | 2h 4m | [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md) | | Sun, Oct 25 | UA 6160 | United Airlines | 15:31 | 17:42 | 2h 11m | Embraer E175 | | Sun, Oct 25 | UA 4425 | United Airlines | 16:30 | 18:38 | 2h 8m | CR5 | | Sun, Oct 25 | UA 579 | United Airlines | 20:15 | 22:20 | 2h 5m | Airbus A319 | | Mon, Oct 26 | UA 6214 | United Airlines | 08:00 | 10:10 | 2h 10m | Embraer E175 | | Mon, Oct 26 | UA 5729 | United Airlines | 12:05 | 14:13 | 2h 8m | Embraer E175 | | Mon, Oct 26 | UA 6243 | United Airlines | 12:05 | 14:13 | 2h 8m | Embraer E175 | | Mon, Oct 26 | UA 6160 | United Airlines | 15:36 | 17:50 | 2h 14m | Embraer E175 | | Mon, Oct 26 | UA 4425 | United Airlines | 16:30 | 18:38 | 2h 8m | CR5 | | Mon, Oct 26 | UA 579 | United Airlines | 20:15 | 22:20 | 2h 5m | Airbus A319 | | Mon, Oct 26 | UA 2804 | United Airlines | 20:20 | 22:26 | 2h 6m | Airbus A319 | | Tue, Oct 27 | UA 6214 | United Airlines | 08:00 | 10:10 | 2h 10m | Embraer E175 | | Tue, Oct 27 | UA 6243 | United Airlines | 12:05 | 14:13 | 2h 8m | Embraer E175 | | Tue, Oct 27 | UA 2042 | United Airlines | 14:31 | 16:35 | 2h 4m | Airbus A319 | | Tue, Oct 27 | UA 4425 | United Airlines | 16:30 | 18:38 | 2h 8m | CR5 | | Tue, Oct 27 | UA 6160 | United Airlines | 16:30 | 18:38 | 2h 8m | Embraer E175 | | Tue, Oct 27 | UA 579 | United Airlines | 20:15 | 22:20 | 2h 5m | Airbus A319 | | Tue, Oct 27 | UA 2804 | United Airlines | 20:20 | 22:26 | 2h 6m | Airbus A319 | | Wed, Oct 28 | UA 6214 | United Airlines | 08:00 | 10:10 | 2h 10m | Embraer E175 | | Wed, Oct 28 | UA 6243 | United Airlines | 12:05 | 14:13 | 2h 8m | Embraer E175 | | Wed, Oct 28 | UA 6160 | United Airlines | 14:40 | 16:50 | 2h 10m | Embraer E175 | | Wed, Oct 28 | UA 4425 | United Airlines | 16:30 | 18:38 | 2h 8m | CR5 | | Wed, Oct 28 | UA 579 | United Airlines | 20:15 | 22:20 | 2h 5m | Airbus A319 | | Wed, Oct 28 | UA 2804 | United Airlines | 20:20 | 22:26 | 2h 6m | Airbus 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](https://2lnr.com/seatmaps/ua/e175.md), the [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md), the Bombardier CRJ, the [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md), the [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md), and the [Airbus A320](https://2lnr.com/seatmaps/ua/a320.md). 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. - [United Airlines (UA) route map](https://2lnr.com/routes/airlines/ua.md)\ [The aircraft UA flies](https://2lnr.com/seatmaps/ua.md) 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. Flying the other way? See [STL to IAH nonstop flights](https://2lnr.com/routes/stl-iah.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Houston (IAH)](https://2lnr.com/routes/iah.md), or [every route from St. Louis (STL)](https://2lnr.com/routes/stl.md). Nonstops from Houston (IAH) to other airports within 150 miles of St. Louis (STL): - [Houston (IAH) to Paducah (PAH)](https://2lnr.com/routes/iah-pah.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 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. [Get started free](https://2lnr.com/login)