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Dulles International Airport to Denver International Airport flight

Explore the cheapest one-way and round-trip flights from Dulles International Airport to Denver International Airport over the next 90 days, with one-way fares from €58 and round-trip from €128. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      IAD 22:10
      4h 9m
      Direct
      DEN 00:19
      Washington D.C. - Denver | Thu, Nov 12 | United Airlines
      DEN 17:55
      3h 20m
      Direct
      IAD 23:15
      Denver - Washington D.C. | Fri, Nov 13 | United Airlines
      €357 €402
      11% off
      11% off
      €402 €357
    • IAD 12:40
      4h 8m
      Direct
      DEN 14:48
      Washington D.C. - Denver | Mon, Nov 16 | United Airlines
      DEN 06:00
      3h 19m
      Direct
      IAD 11:19
      Denver - Washington D.C. | Fri, Nov 20 | United Airlines
      €357 €402
      11% off
      11% off
      €402 €357
    • IAD 22:33
      9h 56m
      1 stop
      DEN 06:29
      Washington D.C. - Denver | Thu, Dec 17 | Frontier Airlines
      DEN 10:26
      7h 45m
      1 stop
      IAD 20:11
      Denver - Washington D.C. | Sun, Dec 20 | Frontier Airlines
      €128 €402
      68% off
      68% off
      €402 €128
    • IAD 12:31
      11h 11m
      1 stop
      DEN 21:42
      Washington D.C. - Denver | Tue, Nov 17 | Frontier Airlines
      DEN 21:19
      12h 17m
      1 stop
      IAD 11:36
      Denver - Washington D.C. | Thu, Nov 19 | Frontier Airlines
      €137
      66% off
      €402 €137
    • IAD 21:06
      13h 16m
      1 stop
      DEN 08:22
      Washington D.C. - Denver | Sun, Nov 22 | Frontier Airlines
      DEN 21:20
      12h 16m
      1 stop
      IAD 11:36
      Denver - Washington D.C. | Tue, Nov 24 | Frontier Airlines
      €141
      65% off
      €402 €141
    • IAD 22:33
      10h 3m
      1 stop
      DEN 06:36
      Washington D.C. - Denver | Mon, Dec 14 | Frontier Airlines
      DEN 10:25
      7h 47m
      1 stop
      IAD 20:12
      Denver - Washington D.C. | Wed, Dec 16 | Frontier Airlines
      €143
      64% off
      €402 €143
    • IAD 12:06
      9h 51m
      1 stop
      DEN 19:57
      Washington D.C. - Denver | Tue, Dec 15 | Frontier Airlines
      DEN 09:00
      6h 47m
      1 stop
      IAD 17:47
      Denver - Washington D.C. | Fri, Dec 18 | Frontier Airlines
      €143
      64% off
      €402 €143
    • IAD 20:56
      13h 54m
      1 stop
      DEN 08:50
      Washington D.C. - Denver | Fri, Dec 18 | Frontier Airlines
      DEN 10:26
      7h 45m
      1 stop
      IAD 20:11
      Denver - Washington D.C. | Sun, Dec 20 | Frontier Airlines
      €144
      64% off
      €402 €144
    • IAD 12:31
      11h 11m
      1 stop
      DEN 21:42
      Washington D.C. - Denver | Tue, Nov 24 | Frontier Airlines
      DEN 21:19
      12h 17m
      1 stop
      IAD 11:36
      Denver - Washington D.C. | Sun, Nov 29 | Frontier Airlines
      €145
      64% off
      €402 €145
    • WAS 13:00
      17h 25m
      1 stop
      DEN 14:00
      Washington D.C. - Denver | Sat, Oct 31 | Normal Airline
      DEN 15:00
      6h
      Direct
      WAS 16:00
      Denver - Washington D.C. | Mon, Nov 2 | Normal Airline
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    • Cheapest
      IAD 20:57
      13h 53m
      1 stop
      DEN 08:50
      Washington D.C. - Denver | Sun, Dec 13 | Frontier Airlines
      €58 €234
      75% off
      75% off
      €234 €58
    • IAD 12:06
      9h 49m
      1 stop
      DEN 19:55
      Washington D.C. - Denver | Sun, Dec 20 | Frontier Airlines
      €70 €234
      70% off
      70% off
      €234 €70
    • IAD 12:06
      9h 49m
      1 stop
      DEN 19:55
      Washington D.C. - Denver | Mon, Dec 28 | Frontier Airlines
      €70 €234
      70% off
      70% off
      €234 €70
    • IAD 12:06
      9h 49m
      1 stop
      DEN 19:55
      Washington D.C. - Denver | Mon, Dec 21 | Frontier Airlines
      €70
      70% off
      €234 €70
    • IAD 07:50
      15h 41m
      1 stop
      DEN 21:31
      Washington D.C. - Denver | Mon, Nov 2 | Frontier Airlines
      €72
      69% off
      €234 €72
    • IAD 18:42
      13h 47m
      1 stop
      DEN 06:29
      Washington D.C. - Denver | Sat, Dec 19 | Frontier Airlines
      €85
      64% off
      €234 €85
    • IAD 18:42
      13h 47m
      1 stop
      DEN 06:29
      Washington D.C. - Denver | Sat, Dec 26 | Frontier Airlines
      €85
      64% off
      €234 €85
    • IAD 22:33
      9h 56m
      1 stop
      DEN 06:29
      Washington D.C. - Denver | Wed, Dec 23 | Frontier Airlines
      €88
      62% off
      €234 €88
    • IAD 06:00
      8h 41m
      1 stop
      DEN 12:41
      Washington D.C. - Denver | Thu, Nov 5 | Frontier Airlines
      €102
      56% off
      €234 €102
    • WAS 13:00
      17h 25m
      1 stop
      DEN 14:00
      Washington D.C. - Denver | Sat, Oct 31 | Normal Airline
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    • Cheapest nonstop
      IAD 14:05
      4h 8m
      Direct
      DEN 16:13
      Washington D.C. - Denver | Tue, Nov 17 | United Airlines
      €251 €381
      34% off
      34% off
      €381 €251
    • IAD 22:10
      4h 9m
      Direct
      DEN 00:19
      Washington D.C. - Denver | Mon, Nov 30 | United Airlines
      €327 €381
      14% off
      14% off
      €381 €327
    • IAD 14:11
      4h 11m
      Direct
      DEN 16:22
      Washington D.C. - Denver | Wed, Jan 6 | United Airlines
      €329 €381
      14% off
      14% off
      €381 €329
    • IAD 14:05
      4h 8m
      Direct
      DEN 16:13
      Washington D.C. - Denver | Mon, Nov 16 | United Airlines
      €329
      14% off
      €381 €329
    • IAD 12:39
      4h 12m
      Direct
      DEN 14:51
      Washington D.C. - Denver | Tue, Dec 29 | United Airlines
      €329
      14% off
      €381 €329
    • IAD 12:39
      4h 12m
      Direct
      DEN 14:51
      Washington D.C. - Denver | Mon, Dec 21 | United Airlines
      €329
      14% off
      €381 €329
    • IAD 08:15
      4h 12m
      Direct
      DEN 10:27
      Washington D.C. - Denver | Mon, Jan 4 | United Airlines
      €329
      14% off
      €381 €329
    • IAD 09:48
      4h 12m
      Direct
      DEN 12:00
      Washington D.C. - Denver | Sun, Dec 20 | United Airlines
      €330
      13% off
      €381 €330
    • IAD 14:11
      4h 11m
      Direct
      DEN 16:22
      Washington D.C. - Denver | Thu, Jan 7 | United Airlines
      €330
      13% off
      €381 €330
    • WAS 13:00
      17h 25m
      1 stop
      DEN 14:00
      Washington D.C. - Denver | Sat, Oct 31 | Normal Airline
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    • Cheapest nonstop
      IAD 22:10
      3h 45m
      Direct
      DEN 23:55
      Washington D.C. - Denver | Mon, Nov 16 | United Airlines
      €207 €234
      12% off
      12% off
      €234 €207
    • IAD 22:10
      3h 45m
      Direct
      DEN 23:55
      Washington D.C. - Denver | Tue, Nov 10 | United Airlines
      €208 €234
      11% off
      11% off
      €234 €208
    • IAD 14:05
      4h 8m
      Direct
      DEN 16:13
      Washington D.C. - Denver | Tue, Nov 17 | United Airlines
      €251 €381
      34% off
      34% off
      €381 €251
    • IAD 19:30
      4h 3m
      Direct
      DEN 21:33
      Washington D.C. - Denver | Thu, Dec 31 | United Airlines
      €251
      34% off
      €378 €251
    • IAD 16:21
      4h 4m
      Direct
      DEN 18:25
      Washington D.C. - Denver | Sat, Dec 12 | United Airlines
      €251
      34% off
      €378 €251
    • IAD 16:21
      4h 4m
      Direct
      DEN 18:25
      Washington D.C. - Denver | Fri, Dec 11 | United Airlines
      €289
      24% off
      €378 €289
    • IAD 22:12
      4h 3m
      Direct
      DEN 00:15
      Washington D.C. - Denver | Sat, Dec 26 | United Airlines
      €318
      16% off
      €378 €318
    • IAD 22:10
      4h 9m
      Direct
      DEN 00:19
      Washington D.C. - Denver | Mon, Nov 30 | United Airlines
      €327
      14% off
      €381 €327
    • IAD 14:11
      4h 11m
      Direct
      DEN 16:22
      Washington D.C. - Denver | Wed, Jan 6 | United Airlines
      €329
      14% off
      €381 €329
    • WAS 13:00
      17h 25m
      1 stop
      DEN 14:00
      Washington D.C. - Denver | Sat, Oct 31 | Normal Airline
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    • IAD 10:44
      6h 7m
      1 stop
      DEN 14:51
      Washington D.C. - Denver | Wed, Nov 4 | American Airlines
      €233 €262
      11% off
      11% off
      €262 €233
    • WAS 13:00
      17h 25m
      1 stop
      DEN 14:00
      Washington D.C. - Denver | Sat, Oct 31 | Normal Airline
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    • IAD 22:10
      3h 45m
      Direct
      DEN 23:55
      Washington D.C. - Denver | Mon, Nov 16 | United Airlines
      €207 €234
      12% off
      12% off
      €234 €207
    • IAD 22:10
      3h 45m
      Direct
      DEN 23:55
      Washington D.C. - Denver | Tue, Nov 10 | United Airlines
      €208 €234
      11% off
      11% off
      €234 €208
    • IAD 19:30
      4h 3m
      Direct
      DEN 21:33
      Washington D.C. - Denver | Thu, Dec 31 | United Airlines
      €251 €378
      34% off
      34% off
      €378 €251
    • IAD 22:12
      4h 3m
      Direct
      DEN 00:15
      Washington D.C. - Denver | Sat, Dec 26 | United Airlines
      €318
      16% off
      €378 €318
    • IAD 19:30
      4h 3m
      Direct
      DEN 21:33
      Washington D.C. - Denver | Fri, Jan 1 | United Airlines
      €329
      13% off
      €378 €329
    • IAD 19:30
      4h 3m
      Direct
      DEN 21:33
      Washington D.C. - Denver | Sat, Jan 2 | United Airlines
      €329
      13% off
      €378 €329
    • IAD 22:12
      4h 3m
      Direct
      DEN 00:15
      Washington D.C. - Denver | Wed, Dec 30 | United Airlines
      €329
      13% off
      €378 €329
    • IAD 19:30
      4h 3m
      Direct
      DEN 21:33
      Washington D.C. - Denver | Fri, Dec 18 | United Airlines
      €331
      12% off
      €378 €331
    • IAD 22:12
      4h 3m
      Direct
      DEN 00:15
      Washington D.C. - Denver | Wed, Dec 23 | United Airlines
      €334
      12% off
      €378 €334
    • WAS 13:00
      17h 25m
      1 stop
      DEN 14:00
      Washington D.C. - Denver | Sat, Oct 31 | 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.

Which airline offers the cheapest flights from Dulles International Airport to Denver International Airport?

The cheapest airline flying from Dulles International Airport to Denver International Airport is Frontier Airlines (from €58) among 5 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From €58
Delta Air Lines
From €136
Alaska Airlines
From €153
American Airlines
From €162
United Airlines
From €207

Find more flights and airlines

What is the flight schedule from Dulles International Airport to Denver International Airport?

Check the schedule for flights from Washington D.C. to Denver and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL1444

    Dulles International Airport

    13:00

    IAD

    1h 57m

    Direct

    14:57

    ATL

    - - - W T - -
    Search

  2. F93599

    Hartsfield–Jackson Atlanta International Airport

    19:58

    ATL

    3h 35m

    Direct

    21:33

    DEN

    S M T W T F S

  3. F91081

    Dulles International Airport

    18:07

    IAD

    2h 20m

    Direct

    20:27

    ATL

    - M - - - - -
    Search

  4. F93599

    Hartsfield–Jackson Atlanta International Airport

    19:58

    ATL

    3h 35m

    Direct

    21:33

    DEN

    S M T W T F S

  5. F94355

    Dulles International Airport

    11:16

    IAD

    2h 33m

    Direct

    13:49

    MCO

    S M T W T F S
    Search

  6. F93311

    Orlando International Airport

    17:38

    MCO

    4h 22m

    Direct

    20:00

    DEN

    S M T W T F S

  7. F94559

    Dulles International Airport

    10:51

    IAD

    3h 39m

    Direct

    13:30

    DFW

    S M T W T F S
    Search

  8. F94463

    Dallas Fort Worth International Airport

    16:43

    DFW

    2h 17m

    Direct

    18:00

    DEN

    S M T W T F S

  9. F91081

    Dulles International Airport

    18:07

    IAD

    2h 20m

    Direct

    20:27

    ATL

    - M - - - - -
    Search

  10. F91449

    Hartsfield–Jackson Atlanta International Airport

    06:45

    ATL

    3h 21m

    Direct

    08:06

    DEN

    S M T W T F S

  11. F94707

    Dulles International Airport

    07:50

    IAD

    2h 4m

    Direct

    09:54

    ATL

    S M T W T F S
    Search

  12. F93599

    Hartsfield–Jackson Atlanta International Airport

    19:58

    ATL

    3h 35m

    Direct

    21:33

    DEN

    S M T W T F S

  13. F94355

    Dulles International Airport

    11:16

    IAD

    2h 33m

    Direct

    13:49

    MCO

    S M T W T F S
    Search

  14. F94919

    Orlando International Airport

    13:19

    MCO

    4h 16m

    Direct

    15:35

    DEN

    S - - W T - S

  15. F94707

    Dulles International Airport

    07:50

    IAD

    2h 4m

    Direct

    09:54

    ATL

    S M T W T F S
    Search

  16. F91449

    Hartsfield–Jackson Atlanta International Airport

    06:45

    ATL

    3h 21m

    Direct

    08:06

    DEN

    S M T W T F S
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About Dulles International Airport and Denver International Airport

Learn about Dulles International Airport (IAD) and Denver International Airport (DEN) — including location, terminals, transportation, and travel tips.

Flight distance 2,334.94km
Cheapest one-way ticket price €58
Cheapest return ticket price €128

FAQs for Dulles International Airport to Denver International Airport Flights

  • How long is the flight from Dulles International Airport to Denver International Airport?

    Dulles International Airport to Denver International Airport takes about 3 hours 57 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 8 daily flights from Dulles International Airport (IAD) to Denver International Airport (DEN).
  • The earliest flight from Dulles International Airport to Denver International Airport departs at 06:10, and the last departs at 22:34, with about 16 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Dulles International Airport (IAD) to Denver International Airport (DEN) is quite popular. Without considering departure times or holidays, tickets cost around €383 in November, the most expensive month to book this route.
  • United Airlines is a very popular airline operating an average of 4351 flights per month.
  • One-way flights from Dulles International Airport to Denver International Airport currently start from €58, and round-trip fares start from €128. The current lowest fare is a Frontier Airlines flight departing on Sun, Dec 13; prices may vary depending on availability.
  • Yes. United Airlines operate direct flights from Dulles International Airport to Denver International Airport, with an average flight time of 4 hours 49 minutes, and around 75 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Dulles International Airport to Denver International Airport is €264. Prices may vary depending on the departure date, airline, and availability.
  • Dulles International Airport to Denver International Airport operates around 74 weekly flights, mainly by United Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Dulles International Airport and Denver International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Find Cheap Flights with Trip.com

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

Book with no extra fees

Prices displayed on this page are all-inclusive (including taxes, fuel surcharges, civil aviation development fund, etc.), with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, 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 have been updated within the last 24 hours—sometimes even in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the cancellation and change policies for each flight ticket during the booking process, including any fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply according to the airline's ticket policy.
Cancellation/change due to a flight schedule change:
If the flight schedule has changed 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 visit the customer support pages.