--- title: "Denver (DEN) to St. Louis (STL) flights: who flies it" description: "United Airlines and Frontier Airlines fly nonstop from DEN to STL, about 27 flights a week, scheduled at 2h 2m to 2h 16m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/den-stl" url: "https://2lnr.com/routes/den-stl.md" date_modified: "2026-10-18T05:10:47Z" --- # Denver to St. Louis (DEN-STL): nonstop flights and who flies them United Airlines and Frontier Airlines fly nonstop between Denver (DEN) and St. Louis (STL), roughly 27 times a week. The timetable below shows the nonstop scheduled at 2h 2m to 2h 16m for the 768 miles. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 22, 2026. See DEN to STL on the interactive map [Get started free](https://2lnr.com/login) 27 Flights a week, 4-week average 2h 2m to 2h 16m Scheduled flight time 768 mi Nonstop distance Free To get started ## Denver to St. Louis flight schedule Scheduled nonstop departures for DEN 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 Denver (DEN) to St. Louis (STL) | Date | Flight | Airline | Departs DEN | Arrives STL | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | UA 652 | United Airlines | 09:35 | 12:40 | 2h 5m | [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md) | | Thu, Oct 22 | UA 1639 | United Airlines | 13:30 | 16:37 | 2h 7m | Airbus A319 | | Thu, Oct 22 | F9 3302 | Frontier Airlines | 16:12 | 19:15 | 2h 3m | [Airbus A320](https://2lnr.com/seatmaps/f9/a320.md) | | Thu, Oct 22 | UA 1422 | United Airlines | 17:30 | 20:36 | 2h 6m | [Boeing 737-900](https://2lnr.com/seatmaps/ua/737-900.md) | | Thu, Oct 22 | UA 4733 | United Airlines | 20:28 | 23:44 | 2h 16m | [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md) | | Fri, Oct 23 | UA 652 | United Airlines | 09:35 | 12:40 | 2h 5m | Airbus A319 | | Fri, Oct 23 | UA 1639 | United Airlines | 13:30 | 16:37 | 2h 7m | Airbus A319 | | Fri, Oct 23 | F9 3302 | Frontier Airlines | 16:12 | 19:15 | 2h 3m | [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md) | | Fri, Oct 23 | UA 1422 | United Airlines | 17:30 | 20:36 | 2h 6m | [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md) | | Fri, Oct 23 | UA 4733 | United Airlines | 20:28 | 23:44 | 2h 16m | Embraer E175 | | Sat, Oct 24 | UA 652 | United Airlines | 09:35 | 12:40 | 2h 5m | Airbus A319 | | Sat, Oct 24 | UA 1639 | United Airlines | 13:30 | 16:37 | 2h 7m | Airbus A319 | | Sat, Oct 24 | F9 3302 | Frontier Airlines | 16:12 | 19:15 | 2h 3m | Airbus A320neo | | Sat, Oct 24 | UA 1422 | United Airlines | 17:30 | 20:36 | 2h 6m | Boeing 737-900 | | Sat, Oct 24 | UA 4733 | United Airlines | 20:28 | 23:44 | 2h 16m | Embraer E175 | | Sun, Oct 25 | UA 652 | United Airlines | 09:35 | 12:40 | 2h 5m | [Airbus A320](https://2lnr.com/seatmaps/ua/a320.md) | | Sun, Oct 25 | UA 1639 | United Airlines | 13:30 | 16:37 | 2h 7m | Airbus A319 | | Sun, Oct 25 | F9 3302 | Frontier Airlines | 16:12 | 19:15 | 2h 3m | Airbus A320 | | Sun, Oct 25 | UA 1422 | United Airlines | 17:54 | 21:01 | 2h 7m | Boeing 737-900 | | Mon, Oct 26 | UA 652 | United Airlines | 09:35 | 12:40 | 2h 5m | Airbus A320 | | Mon, Oct 26 | UA 1639 | United Airlines | 13:30 | 16:37 | 2h 7m | Airbus A319 | | Mon, Oct 26 | F9 3302 | Frontier Airlines | 16:12 | 19:15 | 2h 3m | Airbus A320neo | | Mon, Oct 26 | UA 1422 | United Airlines | 17:52 | 20:59 | 2h 7m | Boeing 737-900 | | Tue, Oct 27 | UA 652 | United Airlines | 09:35 | 12:38 | 2h 3m | Boeing 737-800 | | Tue, Oct 27 | UA 1639 | United Airlines | 13:30 | 16:37 | 2h 7m | Airbus A319 | | Tue, Oct 27 | UA 1422 | United Airlines | 17:52 | 20:59 | 2h 7m | Boeing 737-900 | | Wed, Oct 28 | UA 652 | United Airlines | 09:35 | 12:38 | 2h 3m | Boeing 737-800 | | Wed, Oct 28 | F9 3302 | Frontier Airlines | 12:21 | 15:23 | 2h 2m | Airbus A320neo | | Wed, Oct 28 | UA 1639 | United Airlines | 13:30 | 16:37 | 2h 7m | Airbus A319 | | Wed, Oct 28 | UA 1422 | United Airlines | 17:52 | 20:59 | 2h 7m | Boeing 737-900 | Showing all 30 scheduled DEN 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 DEN to STL date on the interactive map ## Aircraft on the Denver to St. Louis nonstop In the schedule table on this page, United Airlines flies the [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md), the [Boeing 737-900](https://2lnr.com/seatmaps/ua/737-900.md), the [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md), the [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md), and the [Airbus A320](https://2lnr.com/seatmaps/ua/a320.md), and Frontier Airlines flies the [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md) and the [Airbus A320](https://2lnr.com/seatmaps/f9/a320.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full DEN to STL nonstop schedule This page carries the full DEN 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 DEN to STL nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See DEN to STL on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Denver to St. Louis nonstop Carriers operating DEN 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) - [Frontier Airlines (F9) route map](https://2lnr.com/routes/airlines/f9.md)\ [The aircraft F9 flies](https://2lnr.com/seatmaps/f9.md) See DEN to STL on the interactive map → ## Frequently asked questions about DEN to STL **How long is the flight from Denver (DEN) to St. Louis (STL)?** Scheduled flight times from Denver (DEN) to St. Louis (STL) run from 2h 2m to 2h 16m across the departures in the schedule table on this page. The nonstop covers about 768 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from DEN to STL?** United Airlines and Frontier Airlines fly DEN to STL nonstop. 2LNR doesn't show award or upgrade space for any of them on DEN to STL, so this page carries the schedule rather than a space claim. **How many flights a week are there from DEN to STL?** About 27 nonstop flights a week run between Denver (DEN) and St. Louis (STL) in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from DEN to STL depart?** Scheduled DEN to STL nonstops in the next 7 days with service leave between 09:35 and 20:28, local time at Denver. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate DEN to STL nonstop?** In the schedule table on this page, DEN to STL nonstops fly as UA 652, UA 1422, UA 1639, and UA 4733 on United Airlines, and F9 3302 on Frontier Airlines. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on DEN to STL?** Not on this route: 2LNR doesn't show award or upgrade space for any airline flying DEN to STL. The page carries the full DEN to STL nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [STL to DEN nonstop flights](https://2lnr.com/routes/stl-den.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Denver (DEN)](https://2lnr.com/routes/den.md), or [every route from St. Louis (STL)](https://2lnr.com/routes/stl.md). Nonstops from Denver (DEN) to other airports within 150 miles of St. Louis (STL): - [Denver (DEN) to Columbia (COU)](https://2lnr.com/routes/den-cou.md), 100 miles from STL - [Denver (DEN) to Peoria (PIA)](https://2lnr.com/routes/den-pia.md), 138 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 DEN 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)