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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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPR
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
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 agosto 14, 2025.

Round-trip from

$268
(United Airlines)

One-way from

$268
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$462
From Seattle/Tacoma Intl to Casper Natrona County
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One-way flight from Seattle/Tacoma Intl to Casper Natrona County
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Highest demand for flights based on searches. 14% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/12. 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.
mié. 8/2711:11 amSEA - CPR
1 stop6h 58mUnited Airlines
dom. 8/313:11 pmCPR - SEA
1 stop7h 06mUnited Airlines
Deal found 8/12$248
This United Airlines deal was found by Cheapflights users on 8/12. 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.
mié. 9/311:11 amSEA - CPR
1 stop6h 58mUnited Airlines
dom. 9/73:11 pmCPR - SEA
1 stop7h 19mUnited Airlines
Deal found 8/12$268
This United Airlines deal was found by Cheapflights users on 8/14. 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.
mié. 8/2711:11 amSEA - CPR
1 stop6h 58mUnited Airlines
sáb. 8/301:37 pmCPR - SEA
2 stops9h 38mUnited Airlines
Deal found 8/14$279
This United Airlines deal was found by Cheapflights users on 8/14. 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.
jue. 9/45:02 amSEA - CPR
1 stop6h 40mUnited Airlines
sáb. 9/61:37 pmCPR - SEA
1 stop5h 17mUnited Airlines
Deal found 8/14$308
This United Airlines deal was found by Cheapflights users on 8/12. 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. 8/306:25 amSEA - CPR
2 stops14h 49mUnited Airlines
jue. 9/41:37 pmCPR - SEA
1 stop5h 14mUnited Airlines
Deal found 8/12$319
This United Airlines deal was found by Cheapflights users on 8/13. 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.
jue. 8/285:02 amSEA - CPR
1 stop8h 34mUnited Airlines
jue. 9/45:50 pmCPR - SEA
1 stop6h 09mUnited Airlines
Deal found 8/13$338

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 agosto 14, 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

mié. 8/27

11:11 am-7:09 pm

1 stop6h 58m

Casper Natrona County

dom. 8/31

3:11 pm-9:17 pm

1 stop7h 06m

$248

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

mié. 9/3

11:11 am-7:09 pm

1 stop6h 58m

Casper Natrona County

dom. 9/7

3:11 pm-9:30 pm

1 stop7h 19m

$268

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

mié. 8/27

11:11 am-7:09 pm

1 stop6h 58m

Casper Natrona County

sáb. 8/30

1:37 pm-10:15 pm

2 stops9h 38m

$279

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

jue. 9/4

11:11 am-7:09 pm

1 stop6h 58m

Casper Natrona County

sáb. 9/6

1:37 pm-5:54 pm

1 stop5h 17m

$308

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

mar. 9/16

8:45 am-7:09 pm

1 stop9h 24m

Casper Natrona County

lun. 9/22

5:30 am-1:28 pm

1 stop8h 58m

$308

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

vie. 9/5

8:45 am-2:36 pm

1 stop4h 51m

$268

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

jue. 9/4

12:43 pm-10:14 pm

1 stop8h 31m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

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 agosto 14, 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 agosto 14, 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
8,916 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.

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

    United Airlines, at $257, was found to be the cheapest airline from Seattle to Casper.. This flight start at 52% 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 $504). 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$257Average$530FlexibilityNo cancel feeOn-time69%

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