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$258+ Cheap flights from Casper to Seattle (CPR - SEA)

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — SEA
jan 14 — jan 211
qua 1/14
qua 1/21
1 adult, Economy
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Cheap flight deals from Casper to Seattle

Cheapest flights from Casper to Seattle
Explore the most affordable flight options available from Casper to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on dezembro 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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.
qua 12/249:05 amCPR - SEA
1 stop10h 01mUnited Airlines
qui 1/13:50 pmSEA - CPR
1 stop5h 35mUnited Airlines
Deal found 12/15$368
This United Airlines deal was found by Cheapflights users on 12/15. 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.
sáb 12/279:05 amCPR - SEA
1 stop10h 01mUnited Airlines
qua 12/315:02 amSEA - CPR
1 stop6h 44mUnited Airlines
Deal found 12/15$553
This United Airlines deal was found by Cheapflights users on 12/14. 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.
qui 12/183:19 pmCPR - SEA
1 stop8h 40mUnited Airlines
seg 12/225:02 amSEA - CPR
1 stop8h 38mUnited Airlines
Deal found 12/14$669
This United Airlines deal was found by Cheapflights users on 12/13. 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.
dom 12/2811:26 amCPR - SEA
1 stop23h 30mUnited Airlines
qui 1/13:50 pmSEA - CPR
1 stop5h 35mUnited Airlines
Deal found 12/13$701

Find flight deals from Casper to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Casper (CPR) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated dezembro 15, 2025.

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

$363
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 Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Casper to Seattle 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 dezembro 15, 2025.
Use the filters below to find and compare flights from Casper to Seattle that are best for you.

Fly from

Casper

Fly to

Seattle

Route

Depart

Return

Price

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

qui 1/8

9:00 am-1:57 pm

1 stop5h 57m

Seattle/Tacoma Intl

seg 1/12

8:40 am-2:42 pm

1 stop5h 02m

$258

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

ter 1/6

9:00 am-1:57 pm

1 stop5h 57m

Seattle/Tacoma Intl

sáb 1/10

5:00 am-12:35 pm

1 stop6h 35m

$258

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

sáb 2/14

5:25 am-9:49 am

1 stop5h 24m

Seattle/Tacoma Intl

qua 2/18

12:55 pm-8:26 pm

1 stop6h 31m

$328

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

dom 6/7

6:01 pm-10:59 pm

1 stop5h 58m

Seattle/Tacoma Intl

seg 6/15

6:30 am-6:32 pm

2 stops11h 02m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Compare providers for flights from Casper to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Casper to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Casper-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Casper-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Casper-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Casper-Seattle flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Casper-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Casper to Seattle

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

What is the cheapest month to book a flight from Casper to Seattle?

Currently, May is the cheapest month in which you can book a flight from Casper to Seattle (average of $238). Flying from Casper to Seattle 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 Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated dezembro 15, 2025.
See what other customers who have flown with United Airlines from Casper to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Casper to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Casper to Seattle?

    There are many flights that can get you from Casper to Seattle in 5h 57m. Fly via United Airlines to get the fastest option. The distance from Casper to Seattle is about 831 mi.

  • What is the cheapest airline to fly from Casper to Seattle round-trip?

    Flying on United Airlines is currently your cheapest option to Seattle, with prices starting at $256. You may be able to fly from Casper to Seattle for 42% less than the average price by searching for this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Casper to Seattle 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 Seattle?

    Currently, May is the cheapest month in which you can book a flight from Casper to Seattle (average of $238). Flying from Casper to Seattle 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.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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Top airline flying from Casper to Seattle

Discover the top airline that operate flights from Casper to Seattle. 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 dezembro 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$256Average$431FlexibilityNo cancel feeOn-time69%

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