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$324+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — SEA
May 9 — May 161
Sat 5/9
Sat 5/16
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 April 9, 2026.

This United Airlines deal was found by Cheapflights users on 4/4. 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.
Sat 5/25:25 am
CPR
-
SEA
2 stops10h 11m
United Airlines
Sat 5/95:02 am
SEA
-
CPR
1 stop4h 46m
United Airlines
Deal found 4/4$324
This United Airlines deal was found by Cheapflights users on 4/6. 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 4/2111:22 am
CPR
-
PDX
1 stop7h 22m
United Airlines
Sat 4/254:15 pm
PDX
-
CPR
1 stop4h 52m
United Airlines
Deal found 4/6$328
This United Airlines deal was found by Cheapflights users on 4/7. 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 4/233:14 pm
CPR
-
SEA
1 stop8h 19m
United Airlines
Mon 4/275:00 am
SEA
-
CPR
1 stop6h 46m
United Airlines
Deal found 4/7$348
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Wed 8/56:05 pm
CPR
-
SEA
1 stop6h 05m
United Airlines
Wed 8/128:50 am
SEA
-
CPR
1 stop7h 41m
United Airlines
Deal found 4/4$387
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Sun 4/125:25 am
CPR
-
PDX
1 stop5h 23m
United Airlines
Sun 4/195:00 am
PDX
-
CPR
1 stop6h 46m
United Airlines
Deal found 4/5$391
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Mon 9/286:01 pm
CPR
-
SEA
1 stop5h 58m
United Airlines
Sat 10/311:00 am
SEA
-
CPR
2 stops8h 17m
United Airlines
Deal found 4/4$397
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Tue 4/281:21 pm
CPR
-
PDX
1 stop8h 53m
United Airlines
Sat 5/25:00 am
PDX
-
CPR
1 stop4h 48m
United Airlines
Deal found 4/5$398
This United Airlines deal was found by Cheapflights users on 4/5. 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.
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 4/5$398
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Tue 4/281:21 pm
CPR
-
SEA
1 stop5h 39m
United Airlines
Sat 5/25:05 am
SEA
-
CPR
1 stop4h 43m
United Airlines
Deal found 4/5$398
This United Airlines deal was found by Cheapflights users on 4/8. 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 6/291:23 pm
CPR
-
SEA
1 stop5h 36m
United Airlines
Tue 7/72:33 pm
SEA
-
CPR
1 stop4h 53m
United Airlines
Deal found 4/8$407
This United Airlines deal was found by Cheapflights users on 4/8. 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 7/181:23 pm
CPR
-
PDX
2 stops10h 25m
United Airlines
Tue 7/285:00 am
PDX
-
CPR
1 stop4h 46m
United Airlines
Deal found 4/8$428
This United Airlines deal was found by Cheapflights users on 4/8. 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 4/99:05 am
CPR
-
GEG
1 stop4h 35m
United Airlines
Sun 4/125:05 am
GEG
-
CPR
1 stop6h 41m
United Airlines
Deal found 4/8$458

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 April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$318
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$350
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. 31% potential increase in price ($216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 9, 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

Sat 5/2

5:25 am-2:36 pm

2 stops10h 11m

Seattle/Tacoma Intl

Sat 5/9

5:02 am-10:48 am

1 stop4h 46m

$324

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Tue 4/21

11:22 am-5:44 pm

1 stop7h 22m

Portland

Sat 4/25

4:15 pm-10:07 pm

1 stop4h 52m

$328

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Thu 4/23

3:14 pm-10:33 pm

1 stop8h 19m

Seattle/Tacoma Intl

Mon 4/27

5:00 am-12:46 pm

1 stop6h 46m

$348
Quickest round-trip

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Tue 4/28

1:21 pm-5:44 pm

1 stop5h 23m

Portland

Sat 5/2

8:40 am-2:39 pm

1 stop4h 59m

$398

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Tue 4/28

11:22 am-6:00 pm

1 stop7h 38m

Seattle/Tacoma Intl

Sat 5/2

5:05 am-12:41 pm

1 stop6h 36m

$398

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Mon 6/29

1:23 pm-5:59 pm

1 stop5h 36m

Seattle/Tacoma Intl

Tue 7/7

2:33 pm-8:26 pm

1 stop4h 53m

$407

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Sat 7/18

1:23 pm-10:48 pm

2 stops10h 25m

Portland

Tue 7/28

5:00 am-10:46 am

1 stop4h 46m

$428

CasperSpokane

CPR - GEG

CPRGEG

Casper Natrona County

Fri 5/15

1:17 pm-9:16 pm

1 stop8h 59m

Spokane

Wed 5/20

4:10 pm-10:10 pm

1 stop5h 00m

$463

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Tue 6/9

1:23 pm-5:59 pm

1 stop5h 36m

Seattle/Tacoma Intl

Sun 6/14

5:00 am-12:42 pm

1 stop6h 42m

$485

CasperSpokane

CPR - GEG

CPRGEG

Casper Natrona County

Fri 6/19

1:23 pm-9:05 pm

1 stop8h 42m

Spokane

Fri 6/26

5:00 am-10:46 am

1 stop4h 46m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/5

Showing 1-10 of 12 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

How much does it cost to fly round-trip from Casper to State of Washington?

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 April 9, 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
9,554 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,554 reviews
United Airlines
7.4
Good
9,554 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 13m. 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 817 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 April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$273Average$451FlexibilityNo cancel feeOn-time69%

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