den-to-iad

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The cheapest times to fly from DEN to IAD are

  • January 1st to March 4th
  • August 6th to November 18th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DEN to IAD is mid to late September. Prices can be as high as $880 for Sunday flights during mid June, or as low as $177 for Tuesday flights around mid to late September.

 

When to Fly to Washington

Flying from Denver, CO (DEN) to Washington, DC (IAD) will usually cost between $183 to $534 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $197. Due to high demand the most expensive time to fly is mid June, with an average price of $509. Planning your trip to low-cost times can easily save you $312 on economy flights and even more on first-class flights. Generally, any price below $335 can be considered a good price for a round-trip DEN to IAD flight.

See below for a graph of average weekly prices for the DEN to IAD route. All prices are for round-trip tickets in USD.

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DEN to IAD Flight Prices

Compared to other flights, the DEN to IAD flight is much cheaper than the average and costs much less than the average flight leaving from Denver. The average price per mile (for a direct flight) is $0.14, which is far below average.

 

Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $103 (26%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $288. Return trip prices are from the IAD to DEN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

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Departure Day Prices

Return Trip Prices by Day

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Return Day Prices

 

Nonstop Flights and Layovers

Travelers looking to fly from DEN to IAD can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 3 hour 35 minutes may be realistic.

 

Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from DEN to IAD while comparing.

Destination alternative #1: Philadelphia International Airport (PHL) in Philadelphia, PA

  • 135 miles (217 km) away from IAD
  • Usually 15.07% less expensive than IAD
  • Nonstop flights available

See DEN to PHL flights

Destination alternative #2: Baltimore/Washington International Thurgood Marshall Airport (BWI) in Baltimore, MD

  • 45 miles (72 km) away from IAD
  • Usually 8.06% less expensive than IAD
  • Nonstop flights available

See DEN to BWI flights

Destination alternative #3: Ronald Reagan Washington National Airport (DCA) in Washington, DC

  • 24 miles (39 km) away from IAD
  • Usually 4.48% less expensive than IAD
  • Nonstop flights available

See DEN to DCA flights

Destination alternative #4: Charlottesville Albemarle Airport (CHO) in Charlottesville, VA

  • 77 miles (124 km) away from IAD
  • Usually 2.24% less expensive than IAD
  • 1-layover flights available

See DEN to CHO flights

Destination alternative #5: Newport News/Williamsburg International Airport (PHF) in Newport News/Williamsburg, VA

  • 136 miles (219 km) away from IAD
  • Usually 1.94% less expensive than IAD
  • 1-layover flights available

See DEN to PHF flights

 

Flight Questions Answered

Still have questions about flying from DEN to IAD? We’ve got answers.

Which airlines fly this route?

You can find 9 major airlines flying this route most often: Alaska, American, Delta, Frontier, Qantas, Singapore Airlines, Southwest, Sun Country Airlines, United, and potentially more during busy seasons.

How far away is it from Washington Dulles International Airport to Denver International Airport?

The distance between the two airports is roughly 1448 miles or 2330 kilometers.

How long does it take to fly from DEN to IAD?

The real-world flight time for a nonstop DEN to IAD flight is about 3 hour 35 minutes.

How many flights go between Denver, CO and Washington, DC?

It depends on the day of the week and the date, but a typical day might have around 60 available flights from DEN to IAD.

 

Airport Location Info

 

Departing Airport

Origination codeDEN
Origination airport nameDenver International Airport
CityDenver, CO
Countrythe United States
Latitude39.9
Longitude-104.7

Return Airport

Destination codeIAD
Destination airport nameWashington Dulles International Airport
CityWashington, DC
Countrythe United States
Latitude38.9
Longitude-77.5

 

Late and Early Flight Data

Flights from DEN to IAD tend to depart later than the average flight. According to our recently updated data, 34% of flights departed 5 or more minutes late, and 15% of flights left 5 or more minutes early. On average you can expect to leave IAD heading for DEN about 17 minutes late. This does significantly impact arrival time, as the average landing time in Washington, DC is about 17 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • Southwest: 16 minutes late
  • United: 17 minutes late
  • Frontier: 15 minutes late
  • Some airlines not reporting

 

Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.