IAD - CPR

$278 Find Cheap Flights from Washington Dulles Airport to Casper

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Casper departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Casper

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Casper, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Casper, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Dulles Intl to Casper (IAD-CPR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Casper that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Casper

Wed, Aug 27 - Wed, Sep 3
United Airlines Logo
2:39 pm - 8:21 pmIAD-CPR
7h 42m1 stop
United Airlines Logo
7:05 am - 3:34 pmCPR-IAD
6h 29m1 stop
$278United Airlines
Find Deal
Fri, Aug 15 - Tue, Aug 19
United Airlines Logo
2:39 pm - 6:44 pmIAD-CPR
6h 05m1 stop
United Airlines Logo
9:10 am - 7:13 pmCPR-IAD
8h 03m1 stop
$359United Airlines
Find Deal
Sat, Sep 20 - Tue, Sep 23
United Airlines Logo
2:39 pm - 7:09 pmIAD-CPR
6h 30m1 stop
United Airlines Logo
9:10 am - 4:43 pmCPR-IAD
5h 33m1 stop
$368United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
10:25 am - 7:09 pmIAD-CPR
10h 44m1 stop
United Airlines Logo
11:25 am - 11:17 pmCPR-IAD
9h 52m1 stop
$393United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
10:14 pm - 9:40 amIAD-CPR
13h 26m1 stop
United Airlines Logo
5:50 pm - 5:22 amCPR-IAD
9h 32m1 stop
$433United Airlines
Find Deal
Sat, Sep 20 - Tue, Sep 23
United Airlines Logo
8:15 am - 8:21 pmIAD-CPR
14h 06m2 stops
United Airlines Logo
5:50 pm - 5:22 amCPR-IAD
9h 32m1 stop
$447United Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
United Airlines Logo
8:15 am - 10:14 pmIAD-CPR
15h 59m2 stops
United Airlines Logo
5:42 pm - 5:22 amCPR-IAD
9h 40m1 stop
$462United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
10:18 pm - 4:52 pmIAD-CPR
20h 34m2 stops
United Airlines Logo
11:25 am - 11:17 pmCPR-IAD
9h 52m1 stop
$463United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
8:43 am - 8:21 pmIAD-CPR
13h 38m2 stops
United Airlines Logo
5:50 pm - 5:22 amCPR-IAD
9h 32m1 stop
$488United Airlines
Find Deal
Thu, Aug 14 - Mon, Aug 18
United Airlines Logo
6:30 am - 10:54 amIAD-CPR
6h 24m1 stop
United Airlines Logo
5:59 pm - 5:24 amCPR-IAD
9h 25m1 stop
$498United Airlines
Find Deal
Useful Info

Good to know

Cheapest flight$278
Flight from Washington Dulles Airport to Casper

When to book flights from Dulles Intl to Casper

Are your dates flexible? Find out the best times to travel from Dulles Intl to Casper based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Casper flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Casper was $278 for a round-trip ticket.

  • Do I need a passport to fly between Washington Dulles Airport and Casper?

    No

  • Which airports will I be using when flying from Washington Dulles Airport to Casper?

    Washington Dulles Airport airport is called Washington, D.C. Dulles Intl and the only airport in Casper is Casper Natrona County.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Casper?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Casper?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Casper.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Casper?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Casper.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Casper?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Casper from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Casper?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Casper with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and CPR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Casper?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Casper from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Casper

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Casper. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Casper? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8896 reviews
6.6Food
7.1Entertainment
7.3Comfort
7.7Boarding
8.1Crew
Airline reviews

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

8.0 ExcellentHal, Jul 2025IAD - MSY
Read more United Airlines reviews

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Everything you need to know for your flight from Dulles Intl to Casper

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