Great-circle route DEN ↔ DCA. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample. The two directions are not identical — that is normal on scheduled routes.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| DEN → DCA Denver to Washington |
26/wk | Daily | Frontier Airlines, United Airlines |
| DCA → DEN Washington to Denver |
27/wk | Daily | Frontier Airlines, Southwest Airlines, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 461,289 passengers on 2,766 flights between DEN and DCA — about 1,264 a day — filling 85% of the 541,056 seats flown. Frontier Airlines Inc. carried the most passengers (70%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
3 airlines fly the DEN–DCA nonstop, including Frontier Airlines, Southwest Airlines, United Airlines.
Recent scheduled departures on this route have used the Airbus A320 NEO, Airbus A320, Boeing 737.
Aircraft assignments change by season and by time of day.
The distance between Denver International Airport and Ronald Reagan Washington National Airport is 1,472 miles, or 2,369 kilometres.
| Great-circle distance | 1,472 mi |
| Kilometres | 2,369 km |
| Nautical miles | 1,279 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 3 airlines fly the route nonstop, with about 53 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 3h 27m in the air. That is a great-circle estimate from the 1,472-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 26 a week from Denver to Washington and 27 a week from Washington to Denver, from our most recent schedule sample.
Frontier Airlines, Southwest Airlines, United Airlines.
In 2025, airlines reported 461,289 passengers on 2,766 scheduled flights between DEN and DCA — about 1,264 a day — filling 85% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Airbus A320 NEO, Airbus A320, Boeing 737. Assignments change by season and by time of day.
