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Dulles Intl

$378+ Cheap flights from Casper (CPR) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — IAD
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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Cheap flight deals from Casper to Dulles Intl

Cheapest flights from Casper to Dulles Intl
Explore the most affordable flight options available from Casper to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.

This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:45 am
CPR
-
IAD
1 stop10h 23m
United Airlines
Sat 9/52:43 pm
IAD
-
CPR
1 stop9h 15m
United Airlines
Deal found 4/19$458
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:15 am
CPR
-
IAD
1 stop6h 11m
United Airlines
Thu 5/285:41 pm
IAD
-
CPR
1 stop6h 18m
United Airlines
Deal found 4/21$473
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/293:15 pm
CPR
-
IAD
1 stop7h 30m
United Airlines
Sun 5/316:30 am
IAD
-
CPR
1 stop6h 16m
United Airlines
Deal found 4/20$483
This United Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:25 am
CPR
-
IAD
1 stop5h 56m
United Airlines
Mon 5/115:20 pm
IAD
-
CPR
1 stop6h 50m
United Airlines
Deal found 4/21$681
This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2111:21 am
CPR
-
IAD
1 stop10h 11m
United Airlines
Fri 7/36:30 am
IAD
-
CPR
1 stop6h 16m
United Airlines
Deal found 4/19$714

Find flight deals from Casper to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Casper (CPR) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$458
(United Airlines)

One-way from

$378
(United Airlines)
Provider with most accurate pricing for Casper Natrona County-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Casper Natrona County-Washington, D.C. Dulles Intl flights.
Search Deals
From Casper Natrona County to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Casper Natrona County to Washington, D.C. Dulles Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Casper to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 24, 2026.
Use the filters below to find and compare flights from Casper to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Wed 9/2

8:45 am-9:08 pm

1 stop10h 23m

Washington, D.C. Dulles Intl

Sat 9/5

2:43 pm-9:58 pm

1 stop9h 15m

$458

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Fri 5/29

9:26 am-5:58 pm

1 stop6h 32m

Washington, D.C. Dulles Intl

Sun 5/31

6:30 am-2:40 pm

1 stop10h 10m

$458
Quickest round-trip

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Thu 5/21

5:15 am-1:26 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Thu 5/28

5:41 pm-9:59 pm

1 stop6h 18m

$473
Cheapest one-way
Quickest one-way

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Thu 6/11

1:23 pm-9:22 pm

1 stop5h 59m

$378

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Sorted by cheapest first

Compare providers for flights from Casper to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Casper to Dulles Intl in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Casper-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Casper-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Casper-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Casper-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Casper-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Casper to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Casper with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Casper to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Casper to Washington, D.C. Dulles Intl?

    Casper Natrona County (CPR) is the airport you will fly out of if you book a flight from Casper to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Natrona County; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Casper airport to Washington, D.C. Dulles Intl. It is only a 8.1 mi journey to Natrona County (CPR) from Casper’s city center.

  • How long is the flight from Casper to Washington, D.C. Dulles Intl Airport?

    Departing from Casper to Washington, D.C. Dulles Intl Airport will take you 10h 23m. Casper and Washington, D.C. Dulles Intl Airport are separated by a distance of 1530 mi.

  • Can I find deals for flights from Casper to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Casper to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Casper to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Casper to Dulles Intl.

  • Can I find deals for business class flights from Casper to Dulles Intl?

    Yes. Cheapflights offers flight deals from Casper to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Woodbridge
Silver Spring
Herndon
Rockville
Hyattsville
Fredericksburg
Hanover
Laurel
Manassas
Largo
Upper Marlboro
Waldorf
Bowie
Clinton
Hunt Valley

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