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Casper

$274+ Cheap flights from Washington to Casper (CPR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPR
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
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 November 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$264
(United Airlines)

Popular in

July

Cheapest in

February

Average price

$423
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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Highest demand for flights based on searches. 26% potential increase in price ($166 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 November 18, 2025.

This United Airlines deal was found by Cheapflights users on 11/16. 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 12/29:05 amSEA - CPR
2 stops8h 31mUnited Airlines
Sat 12/69:03 amCPR - SEA
1 stop5h 45mUnited Airlines
Deal found 11/16$274
This United Airlines deal was found by Cheapflights users on 11/15. 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.
Sat 12/61:47 pmGEG - CPR
1 stop5h 46mUnited Airlines
Tue 12/91:30 pmCPR - GEG
1 stop8h 29mUnited Airlines
Deal found 11/15$308
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Sat 12/64:02 pmPDX - CPR
1 stop5h 13mUnited Airlines
Wed 12/101:30 pmCPR - PDX
1 stop8h 45mUnited Airlines
Deal found 11/17$323
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/25:25 amGEG - CPR
1 stop6h 06mUnited Airlines
Sat 12/67:00 amCPR - GEG
1 stop6h 45mUnited Airlines
Deal found 11/17$338
This United Airlines deal was found by Cheapflights users on 11/16. 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.
Sat 12/65:04 amPSC - CPR
1 stop8h 34mUnited Airlines
Tue 12/93:17 pmCPR - PSC
1 stop6h 41mUnited Airlines
Deal found 11/16$353
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/125:00 amSEA - CPR
1 stop8h 38mUnited Airlines
Mon 12/1511:21 amCPR - SEA
1 stop8h 04mUnited Airlines
Deal found 11/17$353
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/55:25 amGEG - CPR
1 stop6h 06mUnited Airlines
Sun 12/75:30 amCPR - GEG
2 stops31h 22mUnited Airlines
Deal found 11/17$440
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/245:00 amPDX - CPR
1 stop8h 40mUnited Airlines
Tue 12/301:22 pmCPR - PDX
1 stop8h 45mUnited Airlines
Deal found 11/17$454
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/94:02 pmPDX - CPR
1 stop5h 13mUnited Airlines
Wed 12/109:03 amCPR - PDX
2 stops10h 38mUnited Airlines
Deal found 11/17$467
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Mon 12/1510:10 amPDX - CPR
2 stops11h 05mUnited Airlines
Mon 12/221:22 pmCPR - PDX
1 stop8h 45mUnited Airlines
Deal found 11/17$473
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Mon 12/2212:54 pmPDX - CPR
1 stop8h 31mUnited Airlines
Mon 12/295:30 amCPR - PDX
1 stop5h 31mUnited Airlines
Deal found 11/17$523
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/239:00 amPDX - CPR
1 stop9h 01mUnited Airlines
Mon 12/295:30 amCPR - PDX
1 stop5h 31mUnited Airlines
Deal found 11/17$549

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 November 18, 2025.
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

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Tue 12/2

9:05 am-6:36 pm

2 stops8h 31m

Casper Natrona County

Sat 12/6

9:03 am-1:48 pm

1 stop5h 45m

$274

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Thu 4/2

8:55 am-7:10 pm

1 stop9h 15m

Casper Natrona County

Sat 4/4

3:15 pm-9:07 pm

1 stop6h 52m

$308

PortlandCasper

PDX - CPR

PDXCPR

Portland

Wed 1/28

8:30 am-4:54 pm

1 stop7h 24m

Casper Natrona County

Wed 2/4

11:28 am-6:10 pm

1 stop7h 42m

$308

PortlandCasper

PDX - CPR

PDXCPR

Portland

Thu 1/29

3:45 pm-10:14 pm

1 stop5h 29m

Casper Natrona County

Wed 2/4

5:30 am-1:45 pm

1 stop9h 15m

$308

SpokaneCasper

GEG - CPR

GEGCPR

Spokane

Sat 12/6

1:47 pm-8:33 pm

1 stop5h 46m

Casper Natrona County

Tue 12/9

1:30 pm-8:59 pm

1 stop8h 29m

$308

SpokaneCasper

GEG - CPR

GEGCPR

Spokane

Fri 12/5

1:47 pm-8:33 pm

1 stop5h 46m

Casper Natrona County

Sun 12/7

1:30 pm-8:59 pm

1 stop8h 29m

$338

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Fri 12/12

5:00 am-2:38 pm

1 stop8h 38m

Casper Natrona County

Mon 12/15

11:21 am-6:25 pm

1 stop8h 04m

$353

PascoCasper

PSC - CPR

PSCCPR

Pasco Tri Cities

Sat 12/6

5:04 am-2:38 pm

1 stop8h 34m

Casper Natrona County

Tue 12/9

3:17 pm-8:58 pm

1 stop6h 41m

$353

SpokaneCasper

GEG - CPR

GEGCPR

Spokane

Thu 1/29

6:53 am-2:42 pm

2 stops30h 49m

Casper Natrona County

Sun 2/1

1:16 pm-9:22 pm

1 stop9h 06m

$400

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Sun 12/21

8:57 am-7:01 pm

1 stop9h 04m

Casper Natrona County

Sun 12/28

9:05 am-6:06 pm

1 stop10h 01m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 16 results
1
2

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

What is the cheapest month to book a flight from State of Washington to Casper?

Currently, October is the cheapest month in which you can book a flight from State of Washington to Casper (average of $238). Flying from State of Washington to Casper in June is currently the most expensive (average of $467). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to CPR?

Find hourly flight availability from Washington to Casper. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 18, 2025.

It’s optimal to fly from State of Washington to Casper in the afternoon. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight at noon.

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 8h 31m. United Airlines provides one of the quickest options available for as low as $274. The distance between State of Washington and Casper is about 831 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.

  • What is the cheapest month to book a flight from State of Washington to Casper?

    Currently, October is the cheapest month in which you can book a flight from State of Washington to Casper (average of $238). Flying from State of Washington to Casper in June is currently the most expensive (average of $467). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Casper?

Book flights to Casper if you plan to visit one of these locations
Rawlins

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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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$441FlexibilityNo cancel feeOn-time69%

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