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Flights from Washington D.C. to Denver

Book direct flights from Washington D.C. to Denver: One way flights from $97, round trip flights from $195. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        DCA 7:00 AM
        4h 7m
        Nonstop
        DEN 9:07 AM
        Washington D.C. - Denver | Wed, May 20 | Frontier Airlines
        DEN 4:27 PM
        3h 31m
        Nonstop
        DCA 9:58 PM
        Denver - Washington D.C. | Sat, May 23 | Frontier Airlines
        $195 $242
        19% off
        19% off
        $242 $195
      • DCA 7:00 AM
        4h 7m
        Nonstop
        DEN 9:07 AM
        Washington D.C. - Denver | Tue, May 19 | Frontier Airlines
        DEN 11:54 PM
        8h 18m
        1 stop
        IAD 10:12 AM
        Denver - Washington D.C. | Thu, May 21 | Frontier Airlines
        $166 $242
        31% off
        31% off
        $242 $166
      • IAD 7:27 PM
        14h 57m
        1 stop
        DEN 8:24 AM
        Washington D.C. - Denver | Sat, May 16 | Frontier Airlines
        DEN 11:54 PM
        8h 18m
        1 stop
        IAD 10:12 AM
        Denver - Washington D.C. | Tue, May 19 | Frontier Airlines
        $183 $242
        24% off
        24% off
        $242 $183
      • IAD 7:27 PM
        29h 44m
        1 stop
        DEN 11:11 PM
        Washington D.C. - Denver | Mon, May 18 | Frontier Airlines
        DEN 11:54 PM
        8h 18m
        1 stop
        IAD 10:12 AM
        Denver - Washington D.C. | Tue, May 26 | Frontier Airlines
        $191
        21% off
        $242 $191
      • IAD 11:07 AM
        13h 17m
        1 stop
        DEN 10:24 PM
        Washington D.C. - Denver | Wed, Jun 3 | Frontier Airlines
        DEN 11:46 PM
        8h 36m
        1 stop
        IAD 10:22 AM
        Denver - Washington D.C. | Wed, Jun 10 | Frontier Airlines
        $191
        21% off
        $242 $191
      • DCA 7:00 AM
        4h 7m
        Nonstop
        DEN 9:07 AM
        Washington D.C. - Denver | Wed, May 27 | Frontier Airlines
        DEN 10:29 PM
        7h 43m
        1 stop
        IAD 8:12 AM
        Denver - Washington D.C. | Wed, Jun 3 | Frontier Airlines
        $191
        21% off
        $242 $191
      • IAD 9:12 AM
        20h 13m
        1 stop
        DEN 3:25 AM
        Washington D.C. - Denver | Sun, Jun 7 | Frontier Airlines
        DEN 6:30 AM
        7h 50m
        1 stop
        IAD 4:20 PM
        Denver - Washington D.C. | Tue, Jun 9 | Frontier Airlines
        $194
        20% off
        $242 $194
      • IAD 4:01 PM
        9h 10m
        1 stop
        DEN 11:11 PM
        Washington D.C. - Denver | Tue, Jun 2 | Frontier Airlines
        DEN 6:30 AM
        7h 50m
        1 stop
        IAD 4:20 PM
        Denver - Washington D.C. | Tue, Jun 9 | Frontier Airlines
        $195
        19% off
        $242 $195
      • IAD 4:01 PM
        9h 10m
        1 stop
        DEN 11:11 PM
        Washington D.C. - Denver | Tue, May 26 | Frontier Airlines
        DEN 10:29 PM
        7h 43m
        1 stop
        IAD 8:12 AM
        Denver - Washington D.C. | Mon, Jun 1 | Frontier Airlines
        $197
        19% off
        $242 $197
      • DCA 1:59 PM
        3h 56m
        Nonstop
        DEN 3:55 PM
        Washington D.C. - Denver | Sat, May 30 | Frontier Airlines
        DEN 11:59 PM
        9h 40m
        1 stop
        IAD 11:39 AM
        Denver - Washington D.C. | Sun, May 31 | Frontier Airlines
        $198
        18% off
        $242 $198
      • WAS 1:00 PM
        17h 25m
        1 stop
        DEN 2:00 PM
        Washington D.C. - Denver | Sun, May 17 | Normal Airline
        DEN 3:00 PM
        6h
        Nonstop
        WAS 4:00 PM
        Denver - Washington D.C. | Tue, May 19 | Normal Airline
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      • Cheapest nonstop
        DCA 1:59 PM
        3h 56m
        Nonstop
        DEN 3:55 PM
        Washington D.C. - Denver | Thu, May 28 | Frontier Airlines
        $97 $142
        32% off
        32% off
        $142 $97
      • DCA 6:00 PM
        4h 14m
        Nonstop
        DEN 8:14 PM
        Washington D.C. - Denver | Sat, May 23 | Frontier Airlines
        $109 $142
        23% off
        23% off
        $142 $109
      • IAD 11:07 AM
        28h 57m
        1 stop
        DEN 2:04 PM
        Washington D.C. - Denver | Mon, Jun 1 | Frontier Airlines
        $87 $142
        39% off
        39% off
        $142 $87
      • IAD 11:07 AM
        13h 17m
        1 stop
        DEN 10:24 PM
        Washington D.C. - Denver | Mon, Jun 8 | Frontier Airlines
        $99
        30% off
        $142 $99
      • IAD 6:49 AM
        17h 35m
        1 stop
        DEN 10:24 PM
        Washington D.C. - Denver | Sat, Jun 6 | Frontier Airlines
        $100
        30% off
        $142 $100
      • IAD 7:45 AM
        8h 19m
        1 stop
        DEN 2:04 PM
        Washington D.C. - Denver | Wed, May 27 | Frontier Airlines
        $111
        22% off
        $142 $111
      • IAD 7:27 PM
        21h 45m
        1 stop
        DEN 3:12 PM
        Washington D.C. - Denver | Sun, Jun 7 | Frontier Airlines
        $111
        22% off
        $142 $111
      • IAD 7:38 PM
        6h 55m
        1 stop
        DEN 12:33 AM
        Washington D.C. - Denver | Thu, May 28 | Delta Air Lines
        $113
        20% off
        $142 $113
      • IAD 9:55 AM
        25h 20m
        1 stop
        DEN 9:15 AM
        Washington D.C. - Denver | Tue, Jun 30 | Frontier Airlines
        $114
        20% off
        $142 $114
      • IAD 6:46 AM
        9h 13m
        1 stop
        DEN 1:59 PM
        Washington D.C. - Denver | Sat, Jun 13 | Frontier Airlines
        $116
        18% off
        $142 $116
      • WAS 1:00 PM
        17h 25m
        1 stop
        DEN 2:00 PM
        Washington D.C. - Denver | Sun, May 17 | Normal Airline
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Displayed flight fares from Washington D.C. to Denver are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Trip.com price insights on flights from Washington D.C. to Denver

Which month has the cheapest one-way flights from to Denver?

The average price of one-way flights from to Denver purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from to Denver is January, with an average price of $95; while the month with the highest flight price is usually August, with an average price of up to $343.

$343
$219
$95
0
    Cheapest
  • $178
    May
  • $190
    Jun
  • $159
    Jul
  • $343
    Aug
  • $237
    Sep
  • $122
    Oct
  • $207
    Nov
  • $177
    Dec
  • $95
    Jan
  • $147
    Feb
  • $175
    Mar
  • $172
    Apr

When is the cheapest day to fly from Washington D.C. to Denver during Memorial Day?

Data is based on the lowest one-way price from Washington D.C. to Denver during Memorial Day on Trip.com in the past 3 days.

Memorial Day is scheduled for May 25. The cheapest flights from Washington D.C. to Denver are available on May 26, with fares starting at $114.

$295
$205
$114
$24
    Cheapest
  • $295
    21
    May
  • $286
    22
  • $168
    23
  • $164
    24
  • $164
    25
  • $114
    26
  • $137
    27

Frequently Asked Questions

  • What are the cheapest flights from Washington D.C. to Denver (WAS-DEN)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $87 on Cheapest nonstop routes (e.g. IAD to DEN on Mon, Jun 1), while Frontier Airlines offers Cheapest nonstop round-trips from $166 departing on Tue, May 19 and returning on Thu, May 21.
  • At the moment, you can catch a nonstop flight from Washington D.C. to Denver with the following airlines, including: Frontier Airlines United Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 4 hours 42 minutes to fly from Washington D.C. (WAS) to Denver (DEN).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to Denver is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 64 flight per week flying from Washington D.C. to Denver. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/-/T/F/S -- UA644 (08:51) United Airlines: S/M/T/W/T/F/S -- UA1587 (12:56)
  • To find best deals on flights from Washington D.C. to Denver, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Jun 1, with one-way flights priced at just $87.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Denver travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Washington D.C. to Denver is November, when demand for travel is lower.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Washington D.C. to Denver on May 15, 2026 with Frontier Airlines, with prices starting at $136.
  • You can land at any one of the following hubs in Denver, with Ronald Reagan Washington National Airport to Denver International Airport (DCA-DEN) is by far the most common option on this route: Denver International Airport (DEN) Rocky Mountain Metropolitan Airport (BJC).
  • The time difference between Denver and Washington D.C. is 2h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.