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$274+ Cheap flights from Seattle to Casper (SEA - 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPR
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Cheap flight deals from Seattle to Casper

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Casper (CPR). 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 November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$274
(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 Seattle/Tacoma Intl 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 Seattle to Casper

Cheapest flights from Seattle to Casper
Explore the most affordable flight options available from Seattle to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This United Airlines deal was found by Cheapflights users on 11/25. 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 12/107:00 amSEA - CPR
2 stops10h 36mUnited Airlines
Sun 12/145:30 amCPR - SEA
1 stop5h 39mUnited Airlines
Deal found 11/25$274
This United Airlines deal was found by Cheapflights users on 11/23. 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 12/123:45 pmSEA - CPR
1 stop5h 30mUnited Airlines
Mon 12/151:30 pmCPR - SEA
1 stop9h 16mUnited Airlines
Deal found 11/23$323
This United Airlines deal was found by Cheapflights users on 11/24. 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 12/205:02 amSEA - CPR
1 stop8h 38mUnited Airlines
Sat 12/273:19 pmCPR - SEA
1 stop8h 53mUnited Airlines
Deal found 11/24$620
This United Airlines deal was found by Cheapflights users on 11/25. 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 12/225:02 amSEA - CPR
1 stop8h 38mUnited Airlines
Sun 12/289:05 amCPR - SEA
1 stop10h 01mUnited Airlines
Deal found 11/25$639

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 26, 2025.
Use the filters below to find and compare flights from Seattle to Casper that are best for you.

Fly from

Seattle

Fly to

Casper

Route

Depart

Return

Price

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Wed 12/10

7:00 am-6:36 pm

2 stops10h 36m

Casper Natrona County

Sun 12/14

5:30 am-10:09 am

1 stop5h 39m

$274

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Fri 12/12

3:45 pm-10:15 pm

1 stop5h 30m

Casper Natrona County

Mon 12/15

1:30 pm-9:46 pm

1 stop9h 16m

$323

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Tue 2/10

8:40 am-2:42 pm

1 stop5h 02m

Casper Natrona County

Thu 2/12

6:08 pm-10:59 pm

1 stop5h 51m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Compare providers for flights from Seattle to Casper

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 Seattle to Casper in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 Seattle-Casper flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Casper flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Casper flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Casper 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 Seattle-Casper 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 Seattle to Casper

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

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

Find hourly flight availability from Seattle 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 26, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Casper in the evening. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing Casper

Get insights into the airlines that provide service to Casper. 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 Casper. Reviews last updated November 26, 2025.
Read through reviews of airlines operating flights from Seattle to Casper, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,046 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,046 reviews
United Airlines
7.4
Good
9,046 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

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

    There are many flights that can get you from Seattle to Casper in 10h 36m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 831 mi.

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

    United Airlines, at $238, was found to be the cheapest airline from Seattle to Casper.. This flight start at 48% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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.

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 Seattle to Casper

Discover the top airline that operate flights from Seattle 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$423FlexibilityNo cancel feeOn-time69%

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