Route guide
Cheap Flights from Washington, DC to Denver: Book Airline Tickets
- Distance
- about 1,450 mi
- Typical flight time
- 3 h 15 min – 4 h 15 min
- Airports
- 3 × 1
- Time difference
- 2 h behind
This page covers the practical side of flying between Washington, DC and Denver: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: Washington, DC to Denver is about 1,450 miles (2,330 km) and a typical flight takes 3 h 15 min to 4 h 15 min. Denver is 2 hours behind Washington, DC. Washington, DC has 3 airports to compare and Denver has 1.
Airport pairs to compare
The Washington area has three airports. Reagan National is closest to the city, Dulles handles more long-haul traffic, and BWI sits between Washington and Baltimore. Denver's airport lies on the plains northeast of the city, roughly 25 miles from downtown, so ground transport time matters.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| DCA to DEN | Ronald Reagan Washington National | Denver International |
| IAD to DEN | Washington Dulles International | Denver International |
| BWI to DEN | Baltimore/Washington International | Denver International |
About the airports
- DCA · Ronald Reagan Washington National
Closest to downtown and served by Metrorail. - IAD · Washington Dulles International
Farther out in Virginia, with the larger share of long-haul flights and a Metrorail Silver Line station. - BWI · Baltimore/Washington International
Between Baltimore and Washington, often competitive on price. - DEN · Denver International
Sits roughly 25 miles northeast of downtown, with a commuter rail line to Union Station.
Airlines with a major base at either end
- At Washington, DC: United Airlines, American Airlines
- At Denver: United Airlines, Southwest Airlines
United Airlines has a base at both ends, which can make nonstop service more likely. Schedules change, so a specialist confirms what actually operates on your dates.
When to go and what to expect
Washington, DC
Spring is popular for cherry blossoms in late March and early April. Fall is pleasant, and summer is hot and humid.
Denver
Ski season (roughly late November through April) and summer are the busiest periods. Winter storms can disrupt flights, and spring snow is not unusual.
How long is Washington, DC to Denver?
At about 1,450 miles, Washington, DC to Denver is a short-to-medium flight. Fares on routes this length are sensitive to the day of the week and the time of day, so check a few departure times before you settle.
Time zones and timing
Denver is 2 hours behind Washington, DC, so you land at a local time 2 hours earlier than departure time plus flight time would suggest. Plan your arrival day around local time at the destination.
Getting between the airport and town
Washington, DC: Metrorail serves Reagan National directly and Dulles through the Silver Line, which avoids a lot of traffic.
Denver: The A Line commuter train runs from the airport to Union Station downtown. Shuttles and rental cars serve the mountains.
Planning ground transport too? See our car rental guide.
Good to know
- Check every airport pairing when you compare fares. Schedules and airline options can differ between them.
- Reagan National has a perimeter rule that limits most nonstop flights to a certain distance, so longer routes often use Dulles or BWI.
- If you are heading to a ski area, allow extra time on mountain roads in winter, and watch the forecast before travel day.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying Denver to Washington, DC?
This route guide works in both directions. For other trips, see all flights from Washington, DC or all flights from Denver.
Frequently asked questions
How far is Washington, DC from Denver?
The straight-line distance between the main airports is about 1,450 miles (2,330 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from Washington, DC to Denver?
A typical scheduled flight takes roughly 3 h 15 min to 4 h 15 min in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At Washington, DC: DCA (Ronald Reagan Washington National), IAD (Washington Dulles International), BWI (Baltimore/Washington International). At Denver: DEN (Denver International). Ask for prices on more than one pairing.
Is there a time difference?
Denver is 2 hours behind Washington, DC.
When is the best time to fly from Washington, DC to Denver?
In Washington, DC: Spring is popular for cherry blossoms in late March and early April. Fall is pleasant, and summer is hot and humid. In Denver: Ski season (roughly late November through April) and summer are the busiest periods. Winter storms can disrupt flights, and spring snow is not unusual. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for Washington, DC to Denver?
Airlines with a major base at either end include United Airlines, American Airlines and Southwest Airlines. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
Route details updated October 18, 2026.