--- title: "Washington (IAD) to Denver (DEN) flights: who flies it" description: "United Airlines flies Washington (IAD) to Denver (DEN) nonstop about 53 times a week, scheduled at 3h 50m to 4h 10m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/iad-den" url: "https://2lnr.com/routes/iad-den.md" date_modified: "2026-10-18T05:10:47Z" --- # Washington to Denver (IAD-DEN): nonstop flights and who flies them United Airlines flies nonstop between Washington (IAD) and Denver (DEN), roughly 53 times a week. The timetable below shows the nonstop scheduled at 3h 50m to 4h 10m for the 1,450 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 IAD to DEN on the interactive map [Get started free](https://2lnr.com/login) 53 Flights a week, 4-week average 3h 50m to 4h 10m Scheduled flight time 1,450 mi Nonstop distance Free To get started ## Washington to Denver flight schedule Scheduled nonstop departures for IAD 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 Washington (IAD) to Denver (DEN) | Date | Flight | Airline | Departs IAD | Arrives DEN | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | UA 1561 | United Airlines | 06:35 | 08:28 | 3h 53m | [Boeing 737-900](https://2lnr.com/seatmaps/ua/737-900.md) | | Thu, Oct 22 | UA 797 | United Airlines | 08:15 | 10:09 | 3h 54m | [Airbus A321neo family](https://2lnr.com/seatmaps/ua/a321neo.md) | | Thu, Oct 22 | UA 1865 | United Airlines | 10:10 | 12:02 | 3h 52m | Boeing 737-900 | | Thu, Oct 22 | UA 1587 | United Airlines | 12:40 | 14:30 | 3h 50m | Airbus A321neo family | | Thu, Oct 22 | UA 1126 | United Airlines | 14:43 | 16:33 | 3h 50m | Airbus A321neo family | | Thu, Oct 22 | UA 395 | United Airlines | 16:12 | 18:09 | 3h 57m | Boeing 737-900 | | Thu, Oct 22 | UA 599 | United Airlines | 17:27 | 19:30 | 4h 3m | [Boeing 757-300](https://2lnr.com/seatmaps/ua/757-300.md) | | Thu, Oct 22 | UA 495 | United Airlines | 22:34 | 00:30 | 3h 56m | Airbus A321neo family | | Fri, Oct 23 | UA 1561 | United Airlines | 06:35 | 08:28 | 3h 53m | Boeing 737-900 | | Fri, Oct 23 | UA 797 | United Airlines | 08:15 | 10:09 | 3h 54m | Airbus A321neo family | | Fri, Oct 23 | UA 1865 | United Airlines | 10:10 | 12:02 | 3h 52m | Boeing 737-900 | | Fri, Oct 23 | UA 1587 | United Airlines | 12:40 | 14:30 | 3h 50m | Airbus A321neo family | | Fri, Oct 23 | UA 1126 | United Airlines | 14:43 | 16:33 | 3h 50m | Airbus A321neo family | | Fri, Oct 23 | UA 395 | United Airlines | 16:12 | 18:09 | 3h 57m | Boeing 737-900 | | Fri, Oct 23 | UA 599 | United Airlines | 17:27 | 19:30 | 4h 3m | Boeing 757-300 | | Fri, Oct 23 | UA 495 | United Airlines | 22:34 | 00:28 | 3h 54m | [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md) | | Sat, Oct 24 | UA 797 | United Airlines | 08:15 | 10:09 | 3h 54m | Airbus A321neo family | | Sat, Oct 24 | UA 1865 | United Airlines | 10:10 | 12:02 | 3h 52m | Boeing 737-900 | | Sat, Oct 24 | UA 1587 | United Airlines | 12:50 | 14:40 | 3h 50m | Airbus A321neo family | | Sat, Oct 24 | UA 1126 | United Airlines | 14:43 | 16:33 | 3h 50m | Airbus A321neo family | | Sat, Oct 24 | UA 395 | United Airlines | 16:12 | 18:09 | 3h 57m | Boeing 737-900 | | Sat, Oct 24 | UA 599 | United Airlines | 17:27 | 19:30 | 4h 3m | Boeing 757-300 | | Sat, Oct 24 | UA 495 | United Airlines | 22:34 | 00:30 | 3h 56m | Airbus A321neo family | | Sun, Oct 25 | UA 2264 | United Airlines | 06:10 | 08:19 | 4h 9m | Airbus A321neo family | | Sun, Oct 25 | UA 792 | United Airlines | 08:15 | 10:09 | 3h 54m | Airbus A321neo family | | Sun, Oct 25 | UA 1865 | United Airlines | 10:10 | 12:02 | 3h 52m | Boeing 737-900 | | Sun, Oct 25 | UA 1587 | United Airlines | 12:40 | 14:30 | 3h 50m | Airbus A321neo family | | Sun, Oct 25 | UA 1126 | United Airlines | 14:10 | 16:20 | 4h 10m | Airbus A321neo family | | Sun, Oct 25 | UA 395 | United Airlines | 16:12 | 18:09 | 3h 57m | Boeing 737-900 | | Sun, Oct 25 | UA 599 | United Airlines | 17:20 | 19:30 | 4h 10m | Airbus A321neo family | | Sun, Oct 25 | UA 495 | United Airlines | 22:34 | 00:30 | 3h 56m | Airbus A321neo family | | Mon, Oct 26 | UA 2264 | United Airlines | 06:10 | 08:19 | 4h 9m | Airbus A321neo family | | Mon, Oct 26 | UA 792 | United Airlines | 08:15 | 10:09 | 3h 54m | Airbus A321neo family | | Mon, Oct 26 | UA 1865 | United Airlines | 10:10 | 12:02 | 3h 52m | Boeing 737-900 | | Mon, Oct 26 | UA 1587 | United Airlines | 12:40 | 14:30 | 3h 50m | Airbus A321neo family | | Mon, Oct 26 | UA 1126 | United Airlines | 14:43 | 16:33 | 3h 50m | Airbus A321neo family | | Mon, Oct 26 | UA 395 | United Airlines | 16:12 | 18:09 | 3h 57m | Boeing 737-900 | | Mon, Oct 26 | UA 599 | United Airlines | 17:20 | 19:30 | 4h 10m | Airbus A321neo family | | Mon, Oct 26 | UA 495 | United Airlines | 22:34 | 00:30 | 3h 56m | Airbus A321neo family | | Tue, Oct 27 | UA 792 | United Airlines | 08:15 | 10:09 | 3h 54m | Airbus A321neo family | Showing the first 40 of 53 scheduled IAD to DEN departures across 7 days with service, starting October 22, 2026. Every remaining date is 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 IAD to DEN date on the interactive map ## Aircraft on the Washington to Denver nonstop United Airlines flies the departures in the schedule table on this page with the [Airbus A321neo family](https://2lnr.com/seatmaps/ua/a321neo.md), the [Boeing 737-900](https://2lnr.com/seatmaps/ua/737-900.md), the [Boeing 757-300](https://2lnr.com/seatmaps/ua/757-300.md), and the [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full IAD to DEN nonstop schedule This page carries the full IAD 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 IAD to DEN nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See IAD to DEN on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Washington to Denver nonstop Carriers operating IAD 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) See IAD to DEN on the interactive map → ## Frequently asked questions about IAD to DEN **How long is the flight from Washington (IAD) to Denver (DEN)?** Scheduled flight times from Washington (IAD) to Denver (DEN) run from 3h 50m to 4h 10m across the departures in the schedule table on this page. The nonstop covers about 1,450 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from IAD to DEN?** United Airlines is currently the only airline flying IAD to DEN nonstop. 2LNR doesn't show award or upgrade space for it on IAD to DEN, so this page carries the schedule rather than a space claim. **How many flights a week are there from IAD to DEN?** About 53 nonstop flights a week run between Washington (IAD) and Denver (DEN) 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 IAD to DEN depart?** Scheduled IAD to DEN nonstops in the next 7 days with service leave between 06:10 and 22:34, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate IAD to DEN nonstop?** The schedule table on this page lists 10 flight numbers for IAD to DEN nonstops, including UA 395, UA 495, UA 599, UA 792, UA 797, UA 1126, UA 1587, and UA 1865 on United Airlines. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on IAD to DEN?** Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAD to DEN. The page carries the full IAD to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [DEN to IAD nonstop flights](https://2lnr.com/routes/den-iad.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Washington (IAD)](https://2lnr.com/routes/iad.md), or [every route from Denver (DEN)](https://2lnr.com/routes/den.md). Nonstops to Denver (DEN) from other airports within 150 miles of Washington (IAD): - [Washington (DCA) to Denver (DEN)](https://2lnr.com/routes/dca-den.md), 23 miles from IAD - [Baltimore (BWI) to Denver (DEN)](https://2lnr.com/routes/bwi-den.md), 45 miles from IAD - [Richmond (RIC) to Denver (DEN)](https://2lnr.com/routes/ric-den.md), 100 miles from IAD - [Philadelphia (PHL) to Denver (DEN)](https://2lnr.com/routes/phl-den.md), 134 miles from IAD Nonstops from Washington (IAD) to other airports within 150 miles of Denver (DEN): - [Washington (IAD) to Eagle (EGE)](https://2lnr.com/routes/iad-ege.md), 119 miles from DEN - [Washington (IAD) to Hayden (HDN)](https://2lnr.com/routes/iad-hdn.md), 141 miles from DEN 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 IAD 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)