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$298+ Cheap flights from Casper (CPR) to Washington

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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — SEA
Aug 19 — Aug 261
Wed 8/19
Wed 8/26
1 adult, Economy
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Cheap flight deals from Casper to Washington

Cheapest flights from Casper to Washington
Explore the most affordable flight options available from Casper to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 20, 2026.

This United Airlines deal was found by Cheapflights users on 7/15. 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.
Fri 8/146:05 pm
CPR
-
SEA
1 stop5h 59m
United Airlines
Wed 8/193:54 pm
SEA
-
CPR
1 stop5h 05m
United Airlines
Deal found 7/15$298
This United Airlines deal was found by Cheapflights users on 7/16. 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 9/293:11 pm
CPR
-
GEG
1 stop6h 38m
United Airlines
Sat 10/31:40 pm
GEG
-
CPR
1 stop4h 29m
United Airlines
Deal found 7/16$331
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/44:28 pm
CPR
-
SEA
1 stop5h 47m
United Airlines
Fri 9/1111:03 am
SEA
-
CPR
1 stop7h 06m
United Airlines
Deal found 7/17$374
This United Airlines deal was found by Cheapflights users on 7/15. 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 10/313:15 pm
CPR
-
PDX
1 stop6h 53m
United Airlines
Tue 11/35:00 am
PDX
-
CPR
1 stop4h 53m
United Airlines
Deal found 7/15$378
This United Airlines deal was found by Cheapflights users on 7/15. 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 12/53:15 pm
CPR
-
GEG
1 stop6h 54m
United Airlines
Wed 12/91:45 pm
GEG
-
CPR
1 stop7h 27m
United Airlines
Deal found 7/15$378
This United Airlines deal was found by Cheapflights users on 7/15. 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 11/76:01 pm
CPR
-
SEA
1 stop6h 01m
United Airlines
Sun 11/155:00 am
SEA
-
CPR
1 stop4h 53m
United Airlines
Deal found 7/15$378
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/18:45 am
CPR
-
GEG
1 stop7h 27m
United Airlines
Wed 8/55:00 am
GEG
-
CPR
1 stop4h 46m
United Airlines
Deal found 7/17$382
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Sat 9/1910:01 am
CPR
-
SEA
2 stops9h 28m
United Airlines
Wed 9/237:11 am
SEA
-
CPR
2 stops10h 58m
United Airlines
Deal found 7/19$389
This United Airlines deal was found by Cheapflights users on 7/18. 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 11/251:25 pm
CPR
-
PDX
1 stop8h 43m
United Airlines
Fri 12/44:05 pm
PDX
-
CPR
1 stop5h 07m
United Airlines
Deal found 7/18$393
This United Airlines deal was found by Cheapflights users on 7/18. 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 8/88:45 am
CPR
-
SEA
1 stop10h 14m
United Airlines
Sun 8/165:00 am
SEA
-
CPR
1 stop4h 49m
United Airlines
Deal found 7/18$393
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Thu 7/238:45 am
CPR
-
PDX
2 stops9h 02m
United Airlines
Sun 7/265:00 am
PDX
-
CPR
1 stop4h 46m
United Airlines
Deal found 7/16$394
This United Airlines deal was found by Cheapflights users on 7/18. 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 8/1510:01 am
CPR
-
SEA
2 stops11h 42m
United Airlines
Fri 8/215:00 am
SEA
-
CPR
1 stop6h 45m
United Airlines
Deal found 7/18$399

Find flight deals from Casper to Washington

Keep the following information in mind while searching for Casper to Washington flight deals. Data was last updated July 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$298
(United Airlines)

Popular in

December

Cheapest in

May

Average price

$665
Provider with most accurate pricing for Casper Natrona County-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Casper Natrona County-Seattle/Tacoma Intl flights.
Search Deals
From Casper Natrona County to Washington
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($202 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Casper to Washington 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 July 20, 2026.
Use the filters below to find and compare flights from Casper to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Fri 8/14

6:05 pm-11:04 pm

1 stop5h 59m

Seattle/Tacoma Intl

Wed 8/19

3:54 pm-9:59 pm

1 stop5h 05m

$298

CasperSpokane

CPR - GEG

CPRGEG

Casper Natrona County

Sat 12/5

3:15 pm-9:09 pm

1 stop6h 54m

Spokane

Wed 12/9

1:45 pm-10:12 pm

1 stop7h 27m

$378
Quickest round-trip

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Sat 11/7

6:01 pm-11:02 pm

1 stop6h 01m

Seattle/Tacoma Intl

Sun 11/15

5:00 am-10:53 am

1 stop4h 53m

$378

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Sat 9/19

4:15 pm-9:31 pm

1 stop6h 16m

Seattle/Tacoma Intl

Wed 9/23

3:54 pm-9:59 pm

1 stop5h 05m

$378

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Sat 10/3

5:15 am-10:01 am

1 stop5h 46m

Seattle/Tacoma Intl

Sun 10/11

5:00 am-12:45 pm

1 stop6h 45m

$378

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Tue 9/1

5:15 am-11:44 am

1 stop7h 29m

Seattle/Tacoma Intl

Sat 9/5

5:00 am-2:46 pm

1 stop8h 46m

$378

CasperSpokane

CPR - GEG

CPRGEG

Casper Natrona County

Sat 8/1

8:45 am-3:12 pm

1 stop7h 27m

Spokane

Wed 8/5

5:00 am-10:46 am

1 stop4h 46m

$382

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Sat 10/31

5:30 am-9:39 am

1 stop5h 09m

Portland

Tue 11/3

1:19 pm-10:12 pm

2 stops7h 53m

$384

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Wed 8/12

10:01 am-10:45 pm

2 stops13h 44m

Portland

Tue 8/18

5:00 am-10:49 am

1 stop4h 49m

$384

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Wed 11/25

1:25 pm-12:35 am

2 stops12h 10m

Portland

Fri 12/4

5:15 am-10:53 am

1 stop4h 38m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Casper to Washington

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

Cheapflights Insights

Everything you need to know about your flight from Casper to Washington

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated July 20, 2026.
Read reviews from past customers who have flown United Airlines from Casper to Washington. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,013 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,013 reviews
United Airlines
7.4
Good
10,013 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

Related info for your journey

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

    Casper Natrona County (CPR), located 8.1 mi from the city center, is the airport you fly out of when you book flights from Casper to Washington.

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

    Airlines like United Airlines fly from Casper to State of Washington in about 5h 59m. The time it takes to get you to your destination can typically vary by up to . The distance from Casper to State of Washington is about 831 mi.

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

    The most popular flight routes from Casper to State of Washington are Casper Natrona County - Seattle/Tacoma Intl, Casper Natrona County - Portland and Casper Natrona County - Spokane.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Casper to Washington 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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Top airline flying from Casper to Washington

Discover the top airline that operate flights from Casper to Washington. 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 July 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$402FlexibilityNo cancel feeOn-time69%

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