--- title: "Raleigh/Durham to Denver flights: who flies RDU-DEN" description: "United Airlines and Frontier Airlines fly nonstop from RDU to DEN, about 20 flights a week, covering 1,434 miles. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/rdu-den" url: "https://2lnr.com/routes/rdu-den.md" date_modified: "2026-10-18T05:10:47Z" --- # Raleigh/Durham to Denver (RDU-DEN): nonstop flights and who flies them United Airlines and Frontier Airlines fly nonstop between Raleigh/Durham (RDU) and Denver (DEN), roughly 20 times a week. The timetable below shows the nonstop scheduled at 3h 50m to 4h 11m for the 1,434 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 RDU to DEN on the interactive map [Get started free](https://2lnr.com/login) 20 Flights a week, 4-week average 3h 50m to 4h 11m Scheduled flight time 1,434 mi Nonstop distance Free To get started ## Raleigh/Durham to Denver flight schedule Scheduled nonstop departures for RDU to DEN 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 Raleigh/Durham (RDU) to Denver (DEN) | Date | Flight | Airline | Departs RDU | Arrives DEN | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | UA 741 | United Airlines | 08:15 | 10:05 | 3h 50m | [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md) | | Thu, Oct 22 | F9 2225 | Frontier Airlines | 12:18 | 14:22 | 4h 4m | [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md) | | Thu, Oct 22 | UA 2288 | United Airlines | 16:27 | 18:19 | 3h 52m | Boeing 737-800 | | Fri, Oct 23 | UA 741 | United Airlines | 08:15 | 10:05 | 3h 50m | Boeing 737-800 | | Fri, Oct 23 | UA 2288 | United Airlines | 16:27 | 18:19 | 3h 52m | Boeing 737-800 | | Fri, Oct 23 | F9 2225 | Frontier Airlines | 19:37 | 21:43 | 4h 6m | [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md) | | Sat, Oct 24 | UA 741 | United Airlines | 08:15 | 10:05 | 3h 50m | Boeing 737-800 | | Sat, Oct 24 | UA 2288 | United Airlines | 16:27 | 18:19 | 3h 52m | Boeing 737-800 | | Sat, Oct 24 | F9 2225 | Frontier Airlines | 17:19 | 19:23 | 4h 4m | Airbus A320neo | | Sun, Oct 25 | UA 1475 | United Airlines | 08:00 | 10:05 | 4h 5m | Boeing 737-800 | | Sun, Oct 25 | F9 2225 | Frontier Airlines | 12:18 | 14:22 | 4h 4m | Airbus A320neo | | Sun, Oct 25 | UA 2288 | United Airlines | 16:27 | 18:19 | 3h 52m | Boeing 737-800 | | Mon, Oct 26 | UA 1475 | United Airlines | 08:00 | 10:05 | 4h 5m | Boeing 737-800 | | Mon, Oct 26 | UA 2288 | United Airlines | 16:27 | 18:19 | 3h 52m | Boeing 737-800 | | Mon, Oct 26 | F9 2225 | Frontier Airlines | 19:37 | 21:43 | 4h 6m | Airbus A321neo family | | Tue, Oct 27 | UA 1475 | United Airlines | 08:00 | 10:05 | 4h 5m | Boeing 737-800 | | Tue, Oct 27 | UA 2288 | United Airlines | 16:27 | 18:19 | 3h 52m | Boeing 737-800 | | Wed, Oct 28 | UA 1475 | United Airlines | 08:00 | 10:05 | 4h 5m | Boeing 737-800 | | Wed, Oct 28 | UA 2288 | United Airlines | 16:27 | 18:19 | 3h 52m | Boeing 737-800 | | Wed, Oct 28 | F9 2225 | Frontier Airlines | 18:35 | 20:46 | 4h 11m | [Airbus A321](https://2lnr.com/seatmaps/f9/a321.md) | Showing all 20 scheduled RDU to DEN 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 RDU to DEN date on the interactive map ## Aircraft on the Raleigh/Durham to Denver nonstop In the schedule table on this page, United Airlines flies the [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md), and Frontier Airlines flies the [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md), the [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md), and the [Airbus A321](https://2lnr.com/seatmaps/f9/a321.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full RDU to DEN nonstop schedule This page carries the full RDU to DEN nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each RDU to DEN nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See RDU to DEN on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Raleigh/Durham to Denver nonstop Carriers operating RDU to DEN 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 RDU to DEN on the interactive map → ## Frequently asked questions about RDU to DEN **How long is the flight from Raleigh/Durham (RDU) to Denver (DEN)?** Scheduled flight times from Raleigh/Durham (RDU) to Denver (DEN) run from 3h 50m to 4h 11m across the departures in the schedule table on this page. The nonstop covers about 1,434 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from RDU to DEN?** United Airlines and Frontier Airlines fly RDU to DEN nonstop. 2LNR doesn't show award or upgrade space for any of them on RDU to DEN, so this page carries the schedule rather than a space claim. **How many flights a week are there from RDU to DEN?** About 20 nonstop flights a week run between Raleigh/Durham (RDU) and Denver (DEN) 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 RDU to DEN depart?** Scheduled RDU to DEN nonstops in the next 7 days with service leave between 08:00 and 19:37, local time at Raleigh/Durham. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate RDU to DEN nonstop?** In the schedule table on this page, RDU to DEN nonstops fly as UA 741, UA 1475, and UA 2288 on United Airlines, and F9 2225 on Frontier Airlines. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on RDU to DEN?** Not on this route: 2LNR doesn't show award or upgrade space for any airline flying RDU to DEN. The page carries the full RDU to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [DEN to RDU nonstop flights](https://2lnr.com/routes/den-rdu.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Raleigh/Durham (RDU)](https://2lnr.com/routes/rdu.md), or [every route from Denver (DEN)](https://2lnr.com/routes/den.md). Nonstops to Denver (DEN) from other airports within 150 miles of Raleigh/Durham (RDU): - [Wilmington (ILM) to Denver (DEN)](https://2lnr.com/routes/ilm-den.md), 122 miles from RDU - [Charlotte (CLT) to Denver (DEN)](https://2lnr.com/routes/clt-den.md), 130 miles from RDU - [Richmond (RIC) to Denver (DEN)](https://2lnr.com/routes/ric-den.md), 139 miles from RDU 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 RDU to DEN 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)