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$258+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — SEA
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
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Cheap flight deals from Casper to Washington

Keep the following information in mind while searching for Casper to Washington flight deals. Data was last updated January 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$258
(United Airlines)

Popular in

January

Cheapest in

February

Average price

$738
Provider with most accurate pricing for Casper Natrona County-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Casper Natrona County-Seattle/Tacoma Intl flights.
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From Casper Natrona County to Washington
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Highest demand for flights based on searches. 5% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($28 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 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 January 6, 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.
Fri 4/35:55 pmCPR - PDX
1 stop5h 59mUnited Airlines
Mon 4/64:15 pmPDX - CPR
1 stop4h 52mUnited Airlines
Deal found 1/5$258
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 1/297:00 amCPR - GEG
1 stop6h 46mUnited Airlines
Tue 2/31:48 pmGEG - CPR
1 stop7h 27mUnited Airlines
Deal found 1/6$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 1/283:17 pmCPR - SEA
1 stop6h 58mUnited Airlines
Sun 2/15:00 amSEA - CPR
1 stop4h 53mUnited 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.
Fri 1/2311:28 amCPR - PDX
1 stop7h 42mUnited Airlines
Wed 1/283:45 pmPDX - CPR
1 stop5h 29mUnited Airlines
Deal found 1/5$263
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.
Thu 1/229:00 amCPR - SEA
1 stop5h 57mUnited Airlines
Mon 1/265:00 amSEA - CPR
1 stop6h 35mUnited Airlines
Deal found 1/5$263
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 2/35:30 amCPR - PDX
2 stops10h 16mUnited Airlines
Tue 2/101:24 pmPDX - CPR
1 stop4h 42mUnited Airlines
Deal found 1/6$264
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 1/2111:28 amCPR - SEA
1 stop7h 58mUnited Airlines
Sun 1/255:00 amSEA - CPR
1 stop6h 35mUnited Airlines
Deal found 1/5$268
This United Airlines deal was found by Cheapflights users on 1/4. 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.
Fri 1/169:00 amCPR - GEG
1 stop4h 46mUnited Airlines
Sun 1/181:48 pmGEG - CPR
1 stop4h 18mUnited Airlines
Deal found 1/4$298
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.
Fri 1/165:30 amCPR - PDX
1 stop5h 15mUnited Airlines
Sun 1/255:00 amPDX - CPR
1 stop6h 35mUnited Airlines
Deal found 1/5$315
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.
Tue 1/271:16 pmCPR - GEG
1 stop9h 06mUnited Airlines
Sat 1/315:00 amGEG - CPR
1 stop4h 53mUnited Airlines
Deal found 1/5$328
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.
Tue 1/277:00 amCPR - SEA
1 stop7h 57mUnited Airlines
Sat 1/313:30 pmSEA - CPR
1 stop5h 44mUnited Airlines
Deal found 1/5$328
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 1/211:16 pmCPR - PDX
1 stop8h 56mUnited Airlines
Sat 1/245:00 amPDX - CPR
1 stop6h 35mUnited Airlines
Deal found 1/5$338

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 January 6, 2026.
Use the filters below to find and compare flights from Casper to Washington that are best for you.

Fly from

Casper

Fly to

Washington

Route

Depart

Return

Price

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Wed 2/4

1:16 pm-6:10 pm

1 stop5h 54m

Portland

Wed 2/11

1:24 pm-7:06 pm

1 stop4h 42m

$258

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Fri 4/3

5:55 pm-10:54 pm

1 stop5h 59m

Portland

Mon 4/6

4:15 pm-10:07 pm

1 stop4h 52m

$258

CasperSpokane

CPR - GEG

CPRGEG

Casper Natrona County

Thu 1/29

7:00 am-12:46 pm

1 stop6h 46m

Spokane

Tue 2/3

1:48 pm-10:15 pm

1 stop7h 27m

$258

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Thu 1/29

5:30 am-9:55 am

1 stop5h 25m

Seattle/Tacoma Intl

Sun 2/1

5:00 am-12:35 pm

1 stop6h 35m

$258

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Fri 1/23

11:28 am-6:10 pm

1 stop7h 42m

Portland

Wed 1/28

3:45 pm-10:14 pm

1 stop5h 29m

$263

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Thu 1/22

9:00 am-1:57 pm

1 stop5h 57m

Seattle/Tacoma Intl

Mon 1/26

5:00 am-12:35 pm

1 stop6h 35m

$263

CasperPortland

CPR - PDX

CPRPDX

Casper Natrona County

Tue 2/3

5:30 am-2:46 pm

2 stops10h 16m

Portland

Tue 2/10

1:24 pm-7:06 pm

1 stop4h 42m

$264

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Wed 1/28

11:28 am-9:12 pm

2 stops10h 44m

Seattle/Tacoma Intl

Sun 2/1

5:00 am-12:35 pm

1 stop6h 35m

$264

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Wed 1/21

11:28 am-6:26 pm

1 stop7h 58m

Seattle/Tacoma Intl

Sun 1/25

5:00 am-12:35 pm

1 stop6h 35m

$268

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

Thu 1/22

11:28 am-6:26 pm

1 stop7h 58m

Seattle/Tacoma Intl

Sun 1/25

5:00 am-12:35 pm

1 stop6h 35m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 17 results
1
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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

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

Currently, May is the cheapest month in which you can book a flight from Casper to State of Washington (average of $238). Flying from Casper to State of Washington in January is currently the most expensive (average of $738). 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.

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 January 6, 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
9,132 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,132 reviews
United Airlines
7.4
Good
9,132 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 54m. 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.

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

    Currently, May is the cheapest month in which you can book a flight from Casper to State of Washington (average of $238). Flying from Casper to State of Washington in January is currently the most expensive (average of $738). 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.

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Alternative routes for Casper to Washington

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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 January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$256Average$434FlexibilityNo cancel feeOn-time69%

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