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Find cheap one-way flights from Denver to Washington D.C. starting at US$38.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Denver to Washington D.C.?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Denver to Washington D.C.

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From US$38
Sun Country Airlines
From US$70
Delta Air Lines
From US$92
Southwest Airlines
From US$95
United Airlines
From US$99
American Airlines
From US$114
Alaska Airlines
From US$174
Jetblue Airways
From US$182
ANA airlines

Find more flights and airlines

Find cheap flights from Denver to Washington D.C. by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Denver to Washington D.C..

  • Cheapest
    Frontier Airlines
    DEN
    06:39
    3h 21m
    Direct
    DCA
    12:00
    Denver International Airport - Ronald Reagan Washington National Airport
    Tue, Apr 23Frontier Airlines
    US$38
  • Sun Country Airlines
    DEN
    17:45
    15h 17m
    1 transfer
    IAD
    11:02
    Denver International Airport - Dulles International Airport
    Tue, Apr 23Sun Country Airlines
    US$70
  • Sun Country Airlines
    DEN
    17:45
    15h 17m
    1 transfer
    IAD
    11:02
    Denver International Airport - Dulles International Airport
    Tue, Apr 23Sun Country Airlines
    US$70
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Denver (DEN) to Washington D.C. (WAS) the cheapest?

    Airlines adjust prices for flights from Denver to Washington D.C. based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Denver (DEN) to Washington D.C. (WAS) cost?

    According to Trip.com's data, the lowest price is around $329.
  • How long does it take to fly from Denver (DEN) to Washington D.C. (WAS) and what is the distance?

    It takes around 3 hours 48 minutes to fly from Denver (DEN) to Washington D.C. (WAS).
  • What are the most popular airlines that fly from Denver (DEN) to Washington D.C. (WAS)?

    Airlines with flights from Denver (DEN) to Washington D.C. (WAS): United Airlines, Air Canada, Copa Airlines, Brussels Airlines, Lufthansa, Scandinavian Airlines, Avianca and Ethiopian Airlines.

Denver to Washington D.C. Flight Information

Cheapest nonstop flight price

$37

Cheapest round-trip ticket price

$67

Off-season for travel

November

Peak season for travel

September