Trip.com
>
Flights
>
Flights to United States
>
Flights to District of Columbia
>
Flights to Washington D.C.
>
Denver to Washington D.C. flight
>
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 1,600 and round-trip from THB 4,160. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      DEN 4:10 PM
      3h 20m
      Nonstop
      IAD 9:30 PM
      Denver - Washington D.C. | Fri, Nov 13 | United Airlines
      IAD 8:20 AM
      4h 9m
      Nonstop
      DEN 10:29 AM
      Washington D.C. - Denver | Sun, Nov 15 | United Airlines
      THB 13,850 THB 17,430
      21% off
      21% off
      THB 17,430 THB 13,850
    • DEN 6:00 AM
      3h 19m
      Nonstop
      IAD 11:19 AM
      Denver - Washington D.C. | Thu, Nov 5 | United Airlines
      DCA 4:09 PM
      4h 11m
      Nonstop
      DEN 6:20 PM
      Washington D.C. - Denver | Sun, Nov 8 | United Airlines
      THB 13,940 THB 17,430
      20% off
      20% off
      THB 17,430 THB 13,940
    • DEN 9:00 AM
      6h 38m
      1 stop
      IAD 5:38 PM
      Denver - Washington D.C. | Tue, Dec 8 | Frontier Airlines
      IAD 8:55 PM
      13h 55m
      1 stop
      DEN 8:50 AM
      Washington D.C. - Denver | Fri, Dec 11 | Frontier Airlines
      THB 4,160 THB 17,430
      76% off
      76% off
      THB 17,430 THB 4,160
    • DEN 9:20 PM
      12h 16m
      1 stop
      IAD 11:36 AM
      Denver - Washington D.C. | Sat, Nov 14 | Frontier Airlines
      IAD 12:31 PM
      11h 3m
      1 stop
      DEN 9:34 PM
      Washington D.C. - Denver | Fri, Nov 20 | Frontier Airlines
      THB 4,230
      76% off
      THB 17,430 THB 4,230
    • DEN 7:10 AM
      11h 2m
      1 stop
      IAD 8:12 PM
      Denver - Washington D.C. | Sun, Dec 6 | Frontier Airlines
      IAD 8:55 PM
      13h 55m
      1 stop
      DEN 8:50 AM
      Washington D.C. - Denver | Thu, Dec 10 | Frontier Airlines
      THB 4,250
      76% off
      THB 17,430 THB 4,250
    • DEN 9:19 PM
      12h 17m
      1 stop
      IAD 11:36 AM
      Denver - Washington D.C. | Sun, Nov 15 | Frontier Airlines
      IAD 12:31 PM
      11h 3m
      1 stop
      DEN 9:34 PM
      Washington D.C. - Denver | Sat, Nov 21 | Frontier Airlines
      THB 4,330
      75% off
      THB 17,430 THB 4,330
    • DEN 10:18 AM
      7h 52m
      1 stop
      IAD 8:10 PM
      Denver - Washington D.C. | Sat, Dec 12 | Frontier Airlines
      IAD 10:35 PM
      9h 54m
      1 stop
      DEN 6:29 AM
      Washington D.C. - Denver | Mon, Dec 14 | Frontier Airlines
      THB 4,350
      75% off
      THB 17,430 THB 4,350
    • DEN 9:20 PM
      12h 16m
      1 stop
      IAD 11:36 AM
      Denver - Washington D.C. | Fri, Nov 13 | Frontier Airlines
      IAD 12:31 PM
      11h 3m
      1 stop
      DEN 9:34 PM
      Washington D.C. - Denver | Sat, Nov 21 | Frontier Airlines
      THB 4,400
      75% off
      THB 17,430 THB 4,400
    • DEN 9:19 PM
      12h 17m
      1 stop
      IAD 11:36 AM
      Denver - Washington D.C. | Thu, Nov 19 | Frontier Airlines
      IAD 12:31 PM
      11h 3m
      1 stop
      DEN 9:34 PM
      Washington D.C. - Denver | Sat, Nov 21 | Frontier Airlines
      THB 4,570
      74% off
      THB 17,430 THB 4,570
    • DEN 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
      WAS 3:00 PM
      6h
      Nonstop
      DEN 4:00 PM
      Washington D.C. - Denver | Sat, Oct 31 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest
      DEN 9:20 PM
      12h 16m
      1 stop
      IAD 11:36 AM
      Denver - Washington D.C. | Sat, Nov 14 | Frontier Airlines
      THB 1,600 THB 11,450
      86% off
      86% off
      THB 11,450 THB 1,600
    • DEN 6:30 AM
      27h 6m
      1 stop
      IAD 11:36 AM
      Denver - Washington D.C. | Thu, Nov 12 | Frontier Airlines
      THB 2,000 THB 11,450
      83% off
      83% off
      THB 11,450 THB 2,000
    • DEN 9:00 AM
      6h 47m
      1 stop
      IAD 5:47 PM
      Denver - Washington D.C. | Tue, Dec 8 | Frontier Airlines
      THB 2,410 THB 11,450
      79% off
      79% off
      THB 11,450 THB 2,410
    • DEN 10:41 AM
      11h 2m
      1 stop
      IAD 11:43 PM
      Denver - Washington D.C. | Fri, Nov 20 | Frontier Airlines
      THB 2,570
      78% off
      THB 11,450 THB 2,570
    • DEN 10:41 AM
      11h 2m
      1 stop
      IAD 11:43 PM
      Denver - Washington D.C. | Tue, Nov 17 | Frontier Airlines
      THB 2,600
      77% off
      THB 11,450 THB 2,600
    • DEN 9:20 PM
      12h 16m
      1 stop
      IAD 11:36 AM
      Denver - Washington D.C. | Fri, Nov 13 | Frontier Airlines
      THB 2,680
      77% off
      THB 11,450 THB 2,680
    • DEN 10:43 AM
      11h
      1 stop
      IAD 11:43 PM
      Denver - Washington D.C. | Sat, Nov 21 | Frontier Airlines
      THB 2,950
      74% off
      THB 11,450 THB 2,950
    • DEN 10:41 AM
      11h 2m
      1 stop
      IAD 11:43 PM
      Denver - Washington D.C. | Tue, Nov 3 | Frontier Airlines
      THB 3,610
      68% off
      THB 11,450 THB 3,610
    • DEN 10:43 AM
      11h
      1 stop
      IAD 11:43 PM
      Denver - Washington D.C. | Sat, Oct 31 | Frontier Airlines
      THB 3,630
      68% off
      THB 11,450 THB 3,630
    • DEN 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Sat, Nov 28 | United Airlines
      THB 8,460 THB 11,450
      26% off
      26% off
      THB 11,450 THB 8,460
    • DEN 2:10 PM
      3h 20m
      Nonstop
      IAD 7:30 PM
      Denver - Washington D.C. | Fri, Nov 27 | United Airlines
      THB 9,160 THB 11,450
      20% off
      20% off
      THB 11,450 THB 9,160
    • DEN 2:10 PM
      3h 20m
      Nonstop
      IAD 7:30 PM
      Denver - Washington D.C. | Tue, Nov 24 | United Airlines
      THB 9,160 THB 16,090
      43% off
      43% off
      THB 16,090 THB 9,160
    • DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Wed, Oct 28 | United Airlines
      THB 9,190
      43% off
      THB 16,090 THB 9,190
    • DEN 6:00 AM
      3h 21m
      Nonstop
      IAD 11:21 AM
      Denver - Washington D.C. | Sun, Dec 20 | United Airlines
      THB 9,210
      43% off
      THB 16,090 THB 9,210
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Sat, Dec 5 | United Airlines
      THB 9,210
      41% off
      THB 15,550 THB 9,210
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Thu, Dec 3 | United Airlines
      THB 9,210
      41% off
      THB 15,550 THB 9,210
    • DEN 10:20 AM
      3h 24m
      Nonstop
      IAD 3:44 PM
      Denver - Washington D.C. | Sat, Nov 7 | United Airlines
      THB 9,220
      43% off
      THB 16,090 THB 9,220
    • DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Mon, Nov 9 | United Airlines
      THB 9,220
      43% off
      THB 16,090 THB 9,220
    • DEN 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      DEN 2:10 PM
      3h 20m
      Nonstop
      IAD 7:30 PM
      Denver - Washington D.C. | Tue, Nov 24 | United Airlines
      THB 9,160 THB 22,290
      59% off
      59% off
      THB 22,290 THB 9,160
    • DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Wed, Oct 28 | United Airlines
      THB 9,190 THB 22,290
      59% off
      59% off
      THB 22,290 THB 9,190
    • DEN 6:00 AM
      3h 21m
      Nonstop
      IAD 11:21 AM
      Denver - Washington D.C. | Sun, Dec 20 | United Airlines
      THB 9,210 THB 22,290
      59% off
      59% off
      THB 22,290 THB 9,210
    • DEN 10:20 AM
      3h 24m
      Nonstop
      IAD 3:44 PM
      Denver - Washington D.C. | Sat, Nov 7 | United Airlines
      THB 9,220
      59% off
      THB 22,290 THB 9,220
    • DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Mon, Nov 9 | United Airlines
      THB 9,220
      59% off
      THB 22,290 THB 9,220
    • DEN 4:10 PM
      3h 18m
      Nonstop
      IAD 9:28 PM
      Denver - Washington D.C. | Fri, Nov 6 | United Airlines
      THB 9,220
      59% off
      THB 22,290 THB 9,220
    • DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Thu, Nov 19 | United Airlines
      THB 9,430
      57% off
      THB 22,290 THB 9,430
    • DEN 10:20 AM
      3h 24m
      Nonstop
      IAD 3:44 PM
      Denver - Washington D.C. | Fri, Oct 30 | United Airlines
      THB 10,750
      52% off
      THB 22,290 THB 10,750
    • DEN 10:20 AM
      3h 24m
      Nonstop
      IAD 3:44 PM
      Denver - Washington D.C. | Wed, Nov 4 | United Airlines
      THB 11,090
      50% off
      THB 22,290 THB 11,090
    • DEN 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest nonstop
      DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Sun, Nov 1 | United Airlines
      THB 9,180 THB 22,290
      59% off
      59% off
      THB 22,290 THB 9,180
    • DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Wed, Oct 28 | United Airlines
      THB 9,190 THB 22,290
      59% off
      59% off
      THB 22,290 THB 9,190
    • DEN 10:20 AM
      3h 24m
      Nonstop
      IAD 3:44 PM
      Denver - Washington D.C. | Fri, Oct 30 | United Airlines
      THB 10,750 THB 22,290
      52% off
      52% off
      THB 22,290 THB 10,750
    • DEN 11:59 PM
      3h 20m
      Nonstop
      IAD 5:19 AM
      Denver - Washington D.C. | Mon, Nov 2 | United Airlines
      THB 12,540
      44% off
      THB 22,290 THB 12,540
    • DEN 12:35 PM
      3h 20m
      Nonstop
      IAD 5:55 PM
      Denver - Washington D.C. | Thu, Oct 29 | United Airlines
      THB 12,870
      42% off
      THB 22,290 THB 12,870
    • DEN 4:04 PM
      5h 50m
      1 stop
      IAD 11:54 PM
      Denver - Washington D.C. | Sun, Nov 1 | American Airlines
      THB 7,570
      66% off
      THB 22,290 THB 7,570
    • DEN 3:14 PM
      6h 9m
      1 stop
      IAD 11:23 PM
      Denver - Washington D.C. | Sat, Oct 31 | American Airlines
      THB 13,090
      41% off
      THB 22,290 THB 13,090
    • DEN 4:15 PM
      5h 1m
      1 stop
      IAD 11:16 PM
      Denver - Washington D.C. | Mon, Nov 2 | Delta Air Lines
      THB 17,830
      20% off
      THB 22,290 THB 17,830
    • DEN 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
      Find more flights
      Find more flights
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Sat, Dec 5 | United Airlines
      THB 9,210 THB 15,550
      41% off
      41% off
      THB 15,550 THB 9,210
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Thu, Dec 3 | United Airlines
      THB 9,210 THB 15,550
      41% off
      41% off
      THB 15,550 THB 9,210
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Fri, Dec 4 | United Airlines
      THB 9,230 THB 15,550
      41% off
      41% off
      THB 15,550 THB 9,230
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Mon, Dec 7 | United Airlines
      THB 9,240
      41% off
      THB 15,550 THB 9,240
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Tue, Dec 1 | United Airlines
      THB 9,260
      40% off
      THB 15,550 THB 9,260
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Wed, Dec 9 | United Airlines
      THB 9,280
      40% off
      THB 15,550 THB 9,280
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Sat, Dec 12 | United Airlines
      THB 9,280
      40% off
      THB 15,550 THB 9,280
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Thu, Dec 10 | United Airlines
      THB 9,280
      40% off
      THB 15,550 THB 9,280
    • DEN 4:11 PM
      3h 13m
      Nonstop
      IAD 9:24 PM
      Denver - Washington D.C. | Sun, Dec 13 | United Airlines
      THB 9,280
      40% off
      THB 15,550 THB 9,280
    • DEN 1:00 PM
      17h 25m
      1 stop
      WAS 2:00 PM
      Denver - Washington D.C. | Thu, Oct 29 | Normal Airline
      Find more flights
      Find more flights

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 1,600) among 5 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From THB 1,600
Alaska Airlines
From THB 5,750
Delta Air Lines
From THB 7,140
American Airlines
From THB 7,280
United Airlines
From THB 8,460

Find more flights and airlines

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 AM

    DEN

    2h 4m

    Nonstop

    1:51 PM

    DFW

    S M T W T F S
    Search

  2. F93208

    Dallas Fort Worth International Airport

    6:00 AM

    DFW

    2h 56m

    Nonstop

    9:56 AM

    IAD

    S M T W T F S

  3. F93600

    Denver International Airport

    10:38 AM

    DEN

    3h 11m

    Nonstop

    3:49 PM

    ATL

    S M T W T F S
    Search

  4. F93692

    Hartsfield–Jackson Atlanta International Airport

    10:30 PM

    ATL

    1h 51m

    Nonstop

    12:21 AM

    IAD

    S M T W T F S

  5. F93294

    Denver International Airport

    6:57 PM

    DEN

    3h 2m

    Nonstop

    11:59 PM

    ATL

    S M T W T F S
    Search

  6. F93692

    Hartsfield–Jackson Atlanta International Airport

    10:30 PM

    ATL

    1h 51m

    Nonstop

    12:21 AM

    IAD

    S M T W T F S

  7. F92520

    Denver International Airport

    7:02 PM

    DEN

    3h 35m

    Nonstop

    12:37 AM

    MCO

    S M T W T F S
    Search

  8. F94230

    Orlando Intl. Airport

    8:00 AM

    MCO

    2h 21m

    Nonstop

    10:21 AM

    IAD

    S M T W T F S

  9. F92748

    Denver International Airport

    11:21 AM

    DEN

    3h 28m

    Nonstop

    4:49 PM

    TPA

    S - - W T F S
    Search

  10. F92954

    Tampa International Airport

    10:37 AM

    TPA

    2h 22m

    Nonstop

    12:59 PM

    IAD

    S - T - T - -

  11. F92632

    Denver International Airport

    9:20 PM

    DEN

    1h 58m

    Nonstop

    12:18 AM

    DFW

    S M T W T F S
    Search

  12. F93208

    Dallas Fort Worth International Airport

    6:00 AM

    DFW

    2h 56m

    Nonstop

    9:56 AM

    IAD

    S M T W T F S

  13. F93312

    Denver International Airport

    10:40 AM

    DEN

    3h 38m

    Nonstop

    4:18 PM

    MCO

    S M T W T F -
    Search

  14. F94230

    Orlando Intl. Airport

    8:00 AM

    MCO

    2h 21m

    Nonstop

    10:21 AM

    IAD

    S M T W T F S
Find more flights and airlines

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 2,334.94 km
Cheapest one-way ticket price THB 1,600
Cheapest return ticket price THB 4,160

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 20,550 in October, the most expensive month to book this route.
  • The earliest flight departs from Denver International Airport (DEN) at 06:00 and arrives in Dulles International Airport (IAD) at 11:24.
  • The latest flight departs from Denver International Airport (DEN) at 18:00 and arrives in Dulles International Airport (IAD) at 23:23.
  • 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 1,600, and round-trip fares start from THB 4,160. The current lowest fare is a Frontier Airlines flight departing on Sat, Nov 14; 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 9,660. 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.

Popular Destinations

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.