DEN to IAD: Distance and Flight Time
The distance from Denver International Airport (DEN) to Washington Dulles International Airport (IAD) is 2,332 km (1,449 mi). A typical nonstop flight covers it in about 3h 25m, heading east. The distance is the same in either direction (IAD to DEN).
How far is it from Denver to Dulles?
The great-circle distance between Denver International Airport (DEN) and Washington Dulles International Airport (IAD) is 2,332 km (1,449 mi, 1,259 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.
How long is the flight from DEN to IAD?
A nonstop flight typically takes about 3h 25m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. IAD is roughly east of DEN.
How is the DEN to IAD route written in code?
The pair is written DEN-IAD in IATA codes and KDEN-KIAD in ICAO codes, the form used on a flight plan. Denver International Airport is DEN (KDEN), Washington Dulles International Airport is IAD (KIAD).
| DEN | IAD | |
|---|---|---|
| Airport | Denver International Airport | Washington Dulles International Airport |
| ICAO code | KDEN | KIAD |
| Country | United States | United States |
| Elevation | 5,431 ft | 312 ft |
| Rank by connections | #15 | #72 |
Both ICAO codes start with K, the prefix ICAO assigns to the contiguous United States, so this is a route inside one ICAO region. How ICAO prefixes are laid out.
IAD sits 5,119 ft (1,560 m) lower than DEN, which is a real difference in air density on takeoff.
Airlines flying DEN to IAD
2 airlines appear on this route in the open route dataset, 2 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:
| IATA | Airline | ICAO | Callsign | Status |
|---|---|---|---|---|
| UA | United Airlines | UAL | United | Active |
| WN | Southwest Airlines | SWA | Southwest | Active |
A further 1 carrier sell this pair as a codeshare without operating it: FL.
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Frequently asked questions
How far is Denver from Dulles?
Denver International Airport (DEN) and Washington Dulles International Airport (IAD) are 2,332 km (1,449 mi, 1,259 nautical miles) apart in a straight line.
How long is the flight from DEN to IAD?
A typical nonstop flight between DEN and IAD takes about 3h 25m. Actual times vary with aircraft type, winds and routing.
What direction is IAD from DEN?
Washington Dulles International Airport (IAD) lies roughly east of Denver International Airport (DEN).
Which airlines fly DEN to IAD?
2 airlines appear on the DEN-IAD route in the open dataset, including United Airlines, Southwest Airlines.
Related routes
Other routes from Denver (DEN):
Other routes from Dulles (IAD):
DEN airport code · IAD airport code · Busiest airports worldwide