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Casper

$243+ Cheap flights from Washington to Casper (CPR)

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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPR
Feb 6 — Feb 131
Fri 2/6
Fri 2/13
1 adult, Economy
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Cheap flight deals from Washington to Casper

Keep the following information in mind while searching for Washington to Casper flight deals. Data was last updated January 7, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$258
(United Airlines)

One-way from

$243
(United Airlines)

Popular in

July

Cheapest in

September

Average price

$441
Provider with most accurate pricing for Seattle/Tacoma Intl-Casper Natrona County flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Casper Natrona County flights.
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From Washington to Casper Natrona County
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One-way flight from Washington to Casper Natrona County
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Highest demand for flights based on searches. 23% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Washington to Casper

Cheapest flights from Washington to Casper
Explore the most affordable flight options available from Washington to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 7, 2026.

This United Airlines deal was found by Cheapflights users on 1/5. 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 2/251:18 pmPDX - CPR
1 stop6h 08mUnited Airlines
Wed 3/46:08 pmCPR - PDX
1 stop6h 06mUnited Airlines
Deal found 1/5$258
This United Airlines deal was found by Cheapflights users on 1/5. 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 1/215:00 amSEA - CPR
1 stop4h 53mUnited Airlines
Sun 1/255:30 amCPR - SEA
1 stop5h 25mUnited Airlines
Deal found 1/5$268
This United Airlines deal was found by Cheapflights users on 1/7. 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 1/218:30 amPDX - CPR
1 stop5h 12mUnited Airlines
Sat 1/249:00 amCPR - PDX
1 stop5h 45mUnited Airlines
Deal found 1/7$268
This United Airlines deal was found by Cheapflights users on 1/6. 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 5/268:30 amSEA - CPR
1 stop5h 10mUnited Airlines
Tue 6/26:01 pmCPR - SEA
1 stop5h 58mUnited Airlines
Deal found 1/6$291
This United Airlines deal was found by Cheapflights users on 1/6. 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 5/282:30 pmSEA - CPR
1 stop6h 42mUnited Airlines
Tue 6/26:01 pmCPR - SEA
1 stop5h 58mUnited Airlines
Deal found 1/6$293
This United Airlines deal was found by Cheapflights users on 1/6. 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 5/204:05 pmPDX - CPR
1 stop5h 07mUnited Airlines
Sat 5/305:30 amCPR - PDX
1 stop5h 10mUnited Airlines
Deal found 1/6$327
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/278:40 amSEA - CPR
1 stop7h 14mUnited Airlines
Sat 1/311:16 pmCPR - SEA
1 stop8h 59mUnited Airlines
Deal found 1/6$328
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/305:00 amPSC - CPR
1 stop4h 53mUnited Airlines
Sat 1/315:30 amCPR - PSC
1 stop9h 16mUnited Airlines
Deal found 1/6$328
This United Airlines deal was found by Cheapflights users on 1/7. 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 9/1512:40 pmPDX - CPR
1 stop4h 52mUnited Airlines
Mon 9/215:30 amCPR - PDX
1 stop5h 10mUnited Airlines
Deal found 1/7$328
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/275:00 amGEG - CPR
1 stop4h 53mUnited Airlines
Sat 1/319:00 amCPR - GEG
1 stop4h 46mUnited Airlines
Deal found 1/6$328
This United Airlines deal was found by Cheapflights users on 1/7. 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 1/2212:25 pmSEA - CPR
1 stop7h 15mUnited Airlines
Mon 1/265:30 amCPR - SEA
1 stop5h 25mUnited Airlines
Deal found 1/7$332
This United Airlines deal was found by Cheapflights users on 1/7. 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 1/281:24 pmPDX - CPR
1 stop6h 16mUnited Airlines
Wed 2/411:28 amCPR - PDX
2 stops8h 28mUnited Airlines
Deal found 1/7$334

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Casper 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 January 7, 2026.
Use the filters below to find and compare flights from Washington to Casper that are best for you.

Fly from

Washington

Fly to

Casper

Route

Depart

Return

Price

PortlandCasper

PDX - CPR

PDXCPR

Portland

Wed 2/25

1:18 pm-8:26 pm

1 stop6h 08m

Casper Natrona County

Wed 3/4

6:08 pm-11:14 pm

1 stop6h 06m

$258

PortlandCasper

PDX - CPR

PDXCPR

Portland

Wed 1/21

8:30 am-2:42 pm

1 stop5h 12m

Casper Natrona County

Sat 1/24

9:00 am-1:45 pm

1 stop5h 45m

$268

PortlandCasper

PDX - CPR

PDXCPR

Portland

Wed 1/21

1:24 pm-10:14 pm

1 stop7h 50m

Casper Natrona County

Sun 1/25

5:30 am-9:45 am

1 stop5h 15m

$268

PortlandCasper

PDX - CPR

PDXCPR

Portland

Sat 1/24

1:35 pm-10:14 pm

2 stops7h 39m

Casper Natrona County

Mon 1/26

11:28 am-6:10 pm

1 stop7h 42m

$269

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Wed 1/21

3:30 pm-10:14 pm

1 stop5h 44m

Casper Natrona County

Sun 1/25

5:30 am-3:44 pm

2 stops11h 14m

$274

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Thu 1/22

5:00 am-12:35 pm

1 stop6h 35m

Casper Natrona County

Mon 1/26

1:16 pm-9:58 pm

2 stops9h 42m

$274

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Tue 1/27

12:25 pm-8:40 pm

1 stop7h 15m

Casper Natrona County

Sat 1/31

3:17 pm-9:15 pm

1 stop6h 58m

$328

PascoCasper

PSC - CPR

PSCCPR

Pasco Tri Cities

Fri 1/30

5:00 am-10:53 am

1 stop4h 53m

Casper Natrona County

Sat 1/31

5:30 am-1:46 pm

1 stop9h 16m

$328

PortlandCasper

PDX - CPR

PDXCPR

Portland

Thu 2/26

5:05 am-12:40 pm

1 stop6h 35m

Casper Natrona County

Wed 3/4

6:08 pm-11:14 pm

1 stop6h 06m

$328

PortlandCasper

PDX - CPR

PDXCPR

Portland

Tue 1/27

1:24 pm-10:14 pm

1 stop7h 50m

Casper Natrona County

Sat 1/31

5:30 am-1:45 pm

1 stop9h 15m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 17 results
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Best time to book a flight from Washington to Casper

Have a flexible travel schedule? Discover the best time to fly to Casper from Washington 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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Casper
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington to Casper. 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 into for flights to Casper from Washington?

    Most people fly into Casper Natrona County (CPR) if they book a flight to Casper from Washington. Natrona County is conveniently located just 8.1 mi from Casper’s city center.

  • How long is the flight from State of Washington to Casper?

    A quick flight from State of Washington to Casper can take about 6h 08m. United Airlines provides one of the quickest options available for as low as $258. The distance between State of Washington and Casper is about 817 mi.

  • What are the most popular routes from State of Washington to Casper?

    The most popular route from State of Washington to Casper is Seattle/Tacoma Intl - Casper Natrona County. You may also consider Portland - Casper Natrona County or Spokane - Casper Natrona County.

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

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

  • How can I find direct flights from Washington to Casper?

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

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

    Yes. Cheapflights offers flight deals from Washington to Casper 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

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Alternative routes for Washington to Casper

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Top airline flying from Washington to Casper

Discover the top airline that operate flights from Washington to Casper. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$454FlexibilityNo cancel feeOn-time69%

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