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Denver International Airport to Dulles International Airport flight

Explore the cheapest one-way and round-trip flights from Denver International Airport to Dulles International Airport over the next 90 days, with one-way fares from THB 2,410 and round-trip from THB 3,320. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      DEN 23:52
      3h 25m
      Direct
      IAD 05:17
      Denver - Washington D.C. | Fri, Oct 30 | United Airlines
      IAD 22:34
      3h 56m
      Direct
      DEN 00:30
      Washington D.C. - Denver | Fri, Nov 6 | United Airlines
      THB 13,560 THB 16,950
      20% off
      20% off
      THB 16,950 THB 13,560
    • DEN 17:56
      3h 29m
      Direct
      IAD 23:25
      Denver - Washington D.C. | Sat, Oct 31 | United Airlines
      IAD 14:43
      3h 50m
      Direct
      DEN 16:33
      Washington D.C. - Denver | Sat, Nov 7 | United Airlines
      THB 13,560 THB 16,950
      20% off
      20% off
      THB 16,950 THB 13,560
    • DEN 21:19
      12h 17m
      1 stop
      IAD 11:36
      Denver - Washington D.C. | Mon, Nov 30 | Frontier Airlines
      IAD 21:06
      13h 16m
      1 stop
      DEN 08:22
      Washington D.C. - Denver | Fri, Dec 4 | Frontier Airlines
      THB 3,320 THB 16,950
      80% off
      80% off
      THB 16,950 THB 3,320
    • DEN 21:20
      12h 16m
      1 stop
      IAD 11:36
      Denver - Washington D.C. | Wed, Nov 18 | Frontier Airlines
      IAD 12:31
      11h 11m
      1 stop
      DEN 21:42
      Washington D.C. - Denver | Sat, Nov 21 | Frontier Airlines
      THB 3,940
      77% off
      THB 16,950 THB 3,940
    • DEN 10:41
      11h 2m
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Sat, Nov 21 | Frontier Airlines
      IAD 21:06
      13h 16m
      1 stop
      DEN 08:22
      Washington D.C. - Denver | Tue, Nov 24 | Frontier Airlines
      THB 4,670
      72% off
      THB 16,950 THB 4,670
    • DEN 10:38
      11h 43m
      1 stop
      IAD 00:21
      Denver - Washington D.C. | Wed, Nov 11 | Frontier Airlines
      IAD 21:06
      13h
      1 stop
      DEN 08:06
      Washington D.C. - Denver | Fri, Nov 13 | Frontier Airlines
      THB 5,020
      70% off
      THB 16,950 THB 5,020
    • DEN 21:20
      12h 16m
      1 stop
      IAD 11:36
      Denver - Washington D.C. | Wed, Dec 2 | Frontier Airlines
      DCA 07:00
      4h 16m
      Direct
      DEN 09:16
      Washington D.C. - Denver | Sat, Dec 5 | Frontier Airlines
      THB 5,110
      70% off
      THB 16,950 THB 5,110
    • DEN 10:41
      11h 2m
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Tue, Dec 1 | Frontier Airlines
      IAD 07:52
      15h 40m
      1 stop
      DEN 21:32
      Washington D.C. - Denver | Sat, Dec 5 | Frontier Airlines
      THB 5,430
      68% off
      THB 16,950 THB 5,430
    • DEN 21:19
      12h 17m
      1 stop
      IAD 11:36
      Denver - Washington D.C. | Fri, Dec 4 | Frontier Airlines
      IAD 21:06
      13h 16m
      1 stop
      DEN 08:22
      Washington D.C. - Denver | Mon, Dec 7 | Frontier Airlines
      THB 5,660
      67% off
      THB 16,950 THB 5,660
    • DEN 13:00
      17h 25m
      1 stop
      WAS 14:00
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
      WAS 15:00
      6h
      Direct
      DEN 16:00
      Washington D.C. - Denver | Sat, Oct 31 | Normal Airline
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    • Cheapest
      DEN 09:00
      6h 47m
      1 stop
      IAD 17:47
      Denver - Washington D.C. | Sat, Dec 26 | Frontier Airlines
      THB 2,410 THB 10,230
      76% off
      76% off
      THB 10,230 THB 2,410
    • DEN 10:41
      11h 2m
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Tue, Dec 8 | Frontier Airlines
      THB 2,580 THB 10,230
      75% off
      75% off
      THB 10,230 THB 2,580
    • DEN 10:41
      11h 2m
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Sat, Dec 5 | Frontier Airlines
      THB 2,600 THB 10,230
      75% off
      75% off
      THB 10,230 THB 2,600
    • DEN 10:43
      11h
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Wed, Dec 2 | Frontier Airlines
      THB 2,600
      75% off
      THB 10,230 THB 2,600
    • DEN 10:43
      11h
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Wed, Dec 9 | Frontier Airlines
      THB 2,950
      71% off
      THB 10,230 THB 2,950
    • DEN 23:48
      22h 40m
      1 stop
      IAD 00:28
      Denver - Washington D.C. | Mon, Nov 9 | Frontier Airlines
      THB 3,070
      70% off
      THB 10,230 THB 3,070
    • DEN 10:41
      11h 2m
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Tue, Dec 1 | Frontier Airlines
      THB 3,400
      67% off
      THB 10,230 THB 3,400
    • DEN 10:43
      11h
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Wed, Nov 25 | Frontier Airlines
      THB 3,600
      65% off
      THB 10,230 THB 3,600
    • DEN 10:41
      11h 2m
      1 stop
      IAD 23:43
      Denver - Washington D.C. | Sat, Nov 21 | Frontier Airlines
      THB 3,610
      65% off
      THB 10,230 THB 3,610
    • DEN 13:00
      17h 25m
      1 stop
      WAS 14:00
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
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    • Cheapest nonstop
      DEN 14:10
      3h 20m
      Direct
      IAD 19:30
      Denver - Washington D.C. | Tue, Nov 24 | United Airlines
      THB 9,170 THB 22,320
      59% off
      59% off
      THB 22,320 THB 9,170
    • DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Wed, Oct 28 | United Airlines
      THB 9,200 THB 22,320
      59% off
      59% off
      THB 22,320 THB 9,200
    • DEN 06:00
      3h 21m
      Direct
      IAD 11:21
      Denver - Washington D.C. | Sun, Dec 20 | United Airlines
      THB 9,220 THB 22,320
      59% off
      59% off
      THB 22,320 THB 9,220
    • DEN 10:20
      3h 24m
      Direct
      IAD 15:44
      Denver - Washington D.C. | Sat, Nov 7 | United Airlines
      THB 9,230
      59% off
      THB 22,320 THB 9,230
    • DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Mon, Nov 9 | United Airlines
      THB 9,230
      59% off
      THB 22,320 THB 9,230
    • DEN 16:10
      3h 18m
      Direct
      IAD 21:28
      Denver - Washington D.C. | Fri, Nov 6 | United Airlines
      THB 9,230
      59% off
      THB 22,320 THB 9,230
    • DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Thu, Nov 19 | United Airlines
      THB 9,440
      57% off
      THB 22,320 THB 9,440
    • DEN 10:20
      3h 24m
      Direct
      IAD 15:44
      Denver - Washington D.C. | Fri, Oct 30 | United Airlines
      THB 10,770
      52% off
      THB 22,320 THB 10,770
    • DEN 10:20
      3h 24m
      Direct
      IAD 15:44
      Denver - Washington D.C. | Wed, Nov 4 | United Airlines
      THB 11,100
      50% off
      THB 22,320 THB 11,100
    • DEN 13:00
      17h 25m
      1 stop
      WAS 14:00
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
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    • Cheapest nonstop
      DEN 23:52
      3h 25m
      Direct
      IAD 05:17
      Denver - Washington D.C. | Sun, Nov 8 | United Airlines
      THB 8,030 THB 10,230
      22% off
      22% off
      THB 10,230 THB 8,030
    • DEN 23:52
      3h 25m
      Direct
      IAD 05:17
      Denver - Washington D.C. | Mon, Nov 9 | United Airlines
      THB 8,180 THB 10,230
      20% off
      20% off
      THB 10,230 THB 8,180
    • DEN 14:10
      3h 20m
      Direct
      IAD 19:30
      Denver - Washington D.C. | Tue, Nov 24 | United Airlines
      THB 9,170 THB 16,100
      43% off
      43% off
      THB 16,100 THB 9,170
    • DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Wed, Oct 28 | United Airlines
      THB 9,200
      43% off
      THB 16,100 THB 9,200
    • DEN 06:00
      3h 21m
      Direct
      IAD 11:21
      Denver - Washington D.C. | Sun, Dec 20 | United Airlines
      THB 9,220
      43% off
      THB 16,100 THB 9,220
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Sat, Dec 5 | United Airlines
      THB 9,220
      41% off
      THB 15,580 THB 9,220
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Thu, Dec 3 | United Airlines
      THB 9,220
      41% off
      THB 15,580 THB 9,220
    • DEN 10:20
      3h 24m
      Direct
      IAD 15:44
      Denver - Washington D.C. | Sat, Nov 7 | United Airlines
      THB 9,230
      43% off
      THB 16,100 THB 9,230
    • DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Mon, Nov 9 | United Airlines
      THB 9,230
      43% off
      THB 16,100 THB 9,230
    • DEN 13:00
      17h 25m
      1 stop
      WAS 14:00
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
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    • Cheapest nonstop
      DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Sun, Nov 1 | United Airlines
      THB 9,190 THB 22,320
      59% off
      59% off
      THB 22,320 THB 9,190
    • DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Wed, Oct 28 | United Airlines
      THB 9,200 THB 22,320
      59% off
      59% off
      THB 22,320 THB 9,200
    • DEN 10:20
      3h 24m
      Direct
      IAD 15:44
      Denver - Washington D.C. | Fri, Oct 30 | United Airlines
      THB 10,770 THB 22,320
      52% off
      52% off
      THB 22,320 THB 10,770
    • DEN 23:59
      3h 20m
      Direct
      IAD 05:19
      Denver - Washington D.C. | Mon, Nov 2 | United Airlines
      THB 12,550
      44% off
      THB 22,320 THB 12,550
    • DEN 12:35
      3h 20m
      Direct
      IAD 17:55
      Denver - Washington D.C. | Thu, Oct 29 | United Airlines
      THB 12,880
      42% off
      THB 22,320 THB 12,880
    • DEN 16:04
      5h 50m
      1 stop
      IAD 23:54
      Denver - Washington D.C. | Sun, Nov 1 | American Airlines
      THB 7,580
      66% off
      THB 22,320 THB 7,580
    • DEN 15:14
      6h 9m
      1 stop
      IAD 23:23
      Denver - Washington D.C. | Sat, Oct 31 | American Airlines
      THB 9,100
      59% off
      THB 22,320 THB 9,100
    • DEN 16:15
      5h 1m
      1 stop
      IAD 23:16
      Denver - Washington D.C. | Mon, Nov 2 | Delta Air Lines
      THB 17,850
      20% off
      THB 22,320 THB 17,850
    • DEN 13:00
      17h 25m
      1 stop
      WAS 14:00
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
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    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Sat, Dec 5 | United Airlines
      THB 9,220 THB 15,580
      41% off
      41% off
      THB 15,580 THB 9,220
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Thu, Dec 3 | United Airlines
      THB 9,220 THB 15,580
      41% off
      41% off
      THB 15,580 THB 9,220
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Fri, Dec 4 | United Airlines
      THB 9,240 THB 15,580
      41% off
      41% off
      THB 15,580 THB 9,240
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Mon, Dec 7 | United Airlines
      THB 9,250
      41% off
      THB 15,580 THB 9,250
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Tue, Dec 1 | United Airlines
      THB 9,270
      41% off
      THB 15,580 THB 9,270
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Wed, Dec 9 | United Airlines
      THB 9,290
      40% off
      THB 15,580 THB 9,290
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Sat, Dec 12 | United Airlines
      THB 9,290
      40% off
      THB 15,580 THB 9,290
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Thu, Dec 10 | United Airlines
      THB 9,290
      40% off
      THB 15,580 THB 9,290
    • DEN 16:11
      3h 13m
      Direct
      IAD 21:24
      Denver - Washington D.C. | Sun, Dec 13 | United Airlines
      THB 9,290
      40% off
      THB 15,580 THB 9,290
    • DEN 13:00
      17h 25m
      1 stop
      WAS 14:00
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
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Displayed flight fares from Denver to Washington D.C. 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 Denver International Airport to Dulles International Airport?

The cheapest airline flying from Denver International Airport to Dulles International Airport is Frontier Airlines (from THB 2,410) among 5 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From THB 2,410
Alaska Airlines
From THB 5,750
American Airlines
From THB 6,580
United Airlines
From THB 8,030
Delta Air Lines
From THB 8,540

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

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. F93366

    Denver International Airport

    10:47

    DEN

    2h 4m

    Direct

    13:51

    DFW

    S M T W T F S
    Search

  2. F93208

    Dallas Fort Worth International Airport

    06:00

    DFW

    2h 56m

    Direct

    09:56

    IAD

    S M T W T F S

  3. F93600

    Denver International Airport

    10:38

    DEN

    3h 11m

    Direct

    15:49

    ATL

    S M T W T F S
    Search

  4. F93692

    Hartsfield–Jackson Atlanta International Airport

    22:30

    ATL

    1h 51m

    Direct

    00:21

    IAD

    S - T W T F S

  5. F93294

    Denver International Airport

    18:57

    DEN

    3h 2m

    Direct

    23:59

    ATL

    S M T W T F S
    Search

  6. F93692

    Hartsfield–Jackson Atlanta International Airport

    22:30

    ATL

    1h 51m

    Direct

    00:21

    IAD

    S - T W T F S

  7. F92520

    Denver International Airport

    19:02

    DEN

    3h 35m

    Direct

    00:37

    MCO

    S M T W T F S
    Search

  8. F94230

    Orlando International Airport

    08:00

    MCO

    2h 21m

    Direct

    10:21

    IAD

    S M T W T F S

  9. F92632

    Denver International Airport

    21:20

    DEN

    1h 58m

    Direct

    00:18

    DFW

    S M T W T F S
    Search

  10. F93208

    Dallas Fort Worth International Airport

    06:00

    DFW

    2h 56m

    Direct

    09:56

    IAD

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

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

Flight distance 2,334.94km
Cheapest one-way ticket price THB 2,410
Cheapest return ticket price THB 3,320

FAQs for Denver International Airport to Dulles International Airport Flights

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

    Denver International Airport to Dulles International Airport takes about 3 hours 10 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 8 daily flights from Denver International Airport (DEN) to Dulles International Airport (IAD).
  • The earliest flight from Denver International Airport to Dulles International Airport departs at 06:00, and the last departs at 23:52, with about 10 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Denver International Airport (DEN) to Dulles International Airport (IAD) is quite popular. Without considering departure times or holidays, tickets cost around THB 13,140 in November, the most expensive month to book this route.
  • United Airlines is a very popular airline operating an average of 4298 flights per month.
  • One-way flights from Denver International Airport to Dulles International Airport currently start from THB 2,410, and round-trip fares start from THB 3,320. The current lowest fare is a Frontier Airlines flight departing on Sat, Dec 26; prices may vary depending on availability.
  • Yes. United Airlines operate direct flights from Denver International Airport to Dulles International Airport, with an average flight time of 3 hours 42 minutes, and around 58 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 Denver International Airport to Dulles International Airport is THB 9,670. Prices may vary depending on the departure date, airline, and availability.
  • Denver International Airport to Dulles International Airport operates around 59 weekly flights, mainly by United Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Denver International Airport and Dulles 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.