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Dulles Intl

$368+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — IAD
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
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 May 5, 2026.

This United Airlines deal was found by Cheapflights users on 4/30. 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 5/291:23 pm
CPR
-
IAD
1 stop8h 09m
United Airlines
Sun 5/316:30 am
IAD
-
CPR
1 stop6h 16m
United Airlines
Deal found 4/30$438
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Tue 11/109:10 am
CPR
-
IAD
1 stop10h 00m
United Airlines
Sat 11/148:15 am
IAD
-
CPR
2 stops12h 22m
United Airlines
Deal found 5/4$553
This United Airlines deal was found by Cheapflights users on 5/3. 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 6/176:13 pm
CPR
-
IAD
1 stop9h 14m
United Airlines
Wed 7/18:25 am
IAD
-
CPR
2 stops15h 34m
United Airlines
Deal found 5/3$576
This United Airlines deal was found by Cheapflights users on 5/4. 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 7/56:13 pm
CPR
-
IAD
1 stop9h 14m
United Airlines
Sat 7/116:30 am
IAD
-
CPR
1 stop10h 10m
United Airlines
Deal found 5/4$589
This United Airlines deal was found by Cheapflights users on 5/4. 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 7/56:13 pm
CPR
-
IAD
1 stop9h 14m
United Airlines
Fri 7/1010:23 pm
IAD
-
CPR
1 stop12h 28m
United Airlines
Deal found 5/4$788

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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$438
(United Airlines)

One-way from

$368
(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
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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 May 5, 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
Quickest round-trip

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Fri 5/29

9:26 am-7:25 pm

1 stop7h 59m

Washington, D.C. Dulles Intl

Sun 5/31

6:30 am-10:46 am

1 stop6h 16m

$438

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Wed 6/17

9:26 am-7:25 pm

1 stop7h 59m

Washington, D.C. Dulles Intl

Wed 7/1

6:30 am-10:46 am

1 stop6h 16m

$538

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Sun 7/5

6:13 pm-5:27 am

1 stop9h 14m

Washington, D.C. Dulles Intl

Sat 7/11

6:30 am-2:40 pm

1 stop10h 10m

$589
Cheapest one-way

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Sat 5/30

9:26 am-7:25 pm

1 stop7h 59m

$368
Quickest one-way

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Fri 10/23

10:06 am-7:26 pm

1 stop7h 20m

$418

CasperWashington, D.C.

CPR - IAD

CPRIAD

Casper Natrona County

Sun 7/26

6:13 pm-5:27 am

1 stop9h 14m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

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 May.
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 7h 59m. 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
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Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Woodbridge
Hanover
Laurel
Largo
Upper Marlboro
Waldorf
Clinton
Hunt Valley
Cordova

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