WashingtonDenverDirect FlightsIAD–DEN
Washington (Washington Dulles International Airport) to Denver (Denver International Airport).
Flight time from IAD to DEN is estimated at about 3h 34m, based on the 1,449-mile great-circle distance. Our current captured departure sample includes 11/day across 2 captured airlines, with United Airlines appearing most often in that sample. Captured departure times run from 02:57 to 22:23 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Captured freq. | Type |
|---|---|---|---|
| ~3h 34m Estimated from great-circle distance — no tracked flights yet. | 1,449 mi | 11/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured airlines for IAD to DEN
Our current provider sample includes 11/day from IAD to DEN across 2 captured airlines.
- First departure
- 02:57
- Last departure
- 22:23
- Cadence
- ~every 2 hours
- Captured departures/day
- 13
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| United Airlines | 8-9/day | Airbus A320 family, Boeing 737, Boeing 757 · Seat map | 02:5706:30 |
Aircraft on this route
Flying the other way?
DEN to IAD flights — 11/day on 2 airlines →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for IAD to DEN, last seen June 15, 2026. Frequency uses 77 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.
Route FAQ
How long is the flight from IAD to DEN?
The IAD to DEN flight time is estimated at about 3h 34m from great-circle distance until enough tracked flights are available.
How far is IAD from DEN?
IAD to DEN is about 1,449 miles by air.
Which airlines fly from IAD to DEN?
Our current provider sample for IAD to DEN includes United Airlines, Southwest Airlines. Confirm live timetables before booking.
What aircraft fly from IAD to DEN?
Aircraft captured in our current provider sample for IAD to DEN include Airbus A320 family, Boeing 737, Boeing 757, Boeing 737.