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$248+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPR
Oct 18 — Oct 251
Sat 10/18
Sat 10/25
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 September 18, 2025.

Round-trip from

$248
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$500
From Seattle/Tacoma Intl to Casper Natrona County
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Highest demand for flights based on searches. 22% potential increase in price ($141 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 18, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/3011:10 amSEA - CPR
1 stop6h 37mUnited Airlines
Sat 10/48:55 amCPR - SEA
1 stop7h 37mUnited Airlines
Deal found 9/15$248
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/165:00 amSEA - CPR
1 stop8h 37mUnited Airlines
Thu 10/301:25 pmCPR - SEA
1 stop8h 48mUnited Airlines
Deal found 9/16$308
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 9/205:02 amSEA - CPR
1 stop6h 40mUnited Airlines
Sun 9/286:00 pmCPR - SEA
1 stop6h 29mUnited Airlines
Deal found 9/16$313
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 9/206:25 amSEA - CPR
2 stops9h 27mUnited Airlines
Mon 9/293:12 pmCPR - SEA
1 stop7h 22mUnited Airlines
Deal found 9/16$319
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 9/186:25 amSEA - CPR
2 stops9h 27mUnited Airlines
Sat 9/203:11 pmCPR - SEA
1 stop7h 11mUnited Airlines
Deal found 9/15$334
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/168:45 amSEA - CPR
1 stop4h 51mUnited Airlines
Mon 9/225:50 pmCPR - SEA
1 stop6h 09mUnited Airlines
Deal found 9/15$383

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 September 18, 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

Thu 10/2

5:00 am-10:47 am

1 stop4h 47m

Casper Natrona County

Mon 10/6

6:00 pm-11:29 pm

1 stop6h 29m

$248

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Fri 10/17

5:00 am-10:47 am

1 stop4h 47m

Casper Natrona County

Fri 10/24

6:00 pm-11:29 pm

1 stop6h 29m

$299

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Thu 10/16

6:35 am-8:17 pm

2 stops12h 42m

Casper Natrona County

Thu 10/30

6:05 pm-11:10 pm

1 stop6h 05m

$314

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Sun 12/21

5:02 am-2:40 pm

1 stop8h 38m

Casper Natrona County

Sat 12/27

6:10 pm-10:59 pm

1 stop5h 49m

$558

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Sat 12/20

5:02 am-2:40 pm

1 stop8h 38m

Casper Natrona County

Sat 12/27

6:10 pm-10:59 pm

1 stop5h 49m

$606

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Fri 10/17

5:00 am-12:41 pm

1 stop6h 41m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 September 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Casper in the morning. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight at noon.

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 September 18, 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
8,926 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

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 4h 47m. 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 51% 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.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Casper (average of $348). Flying from Seattle to Casper in June is currently the most expensive (average of $500). 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 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 September 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$453FlexibilityNo cancel feeOn-time69%

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