Cheap flights from Seattle to Casper from $268

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Casper departing on 8/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

United Airlines Logo
6:25 am - 10:14 pmSEA-CPR
14h 49m2 stops
United Airlines Logo
5:50 pm - 10:59 pmCPR-SEA
6h 09m1 stop
$314United Airlines
Find Deal
Sat, Aug 30 - Thu, Sep 4
United Airlines Logo
6:25 am - 8:21 pmSEA-CPR
12h 56m2 stops
United Airlines Logo
9:10 am - 10:15 pmCPR-SEA
14h 05m2 stops
$319United Airlines
Find Deal
Sat, Aug 30 - Thu, Sep 4
United Airlines Logo
11:11 am - 7:09 pmSEA-CPR
6h 58m1 stop
United Airlines Logo
9:10 am - 5:54 pmCPR-SEA
9h 44m1 stop
$338United Airlines
Find Deal
Wed, Sep 3 - Sat, Sep 6
United Airlines Logo
5:02 am - 2:36 pmSEA-CPR
8h 34m1 stop
United Airlines Logo
5:50 pm - 10:59 pmCPR-SEA
6h 09m1 stop
$394United Airlines
Find Deal
Sat, Aug 30 - Thu, Sep 4
United Airlines Logo
6:45 am - 4:53 pmSEA-CPR
9h 08m2 stops
United Airlines Logo
5:59 pm - 10:59 pmCPR-SEA
6h 00m1 stop
$405United Airlines
Find Deal
Tue, Aug 12 - Sat, Aug 16
United Airlines Logo
3:36 pm - 10:14 pmSEA-CPR
5h 38m1 stop
United Airlines Logo
11:25 am - 10:15 pmCPR-SEA
11h 50m2 stops
$429United Airlines
Find Deal
Thu, Aug 21 - Thu, Sep 4
United Airlines Logo
6:25 am - 7:09 pmSEA-CPR
11h 44m2 stops
United Airlines Logo
5:50 pm - 10:59 pmCPR-SEA
6h 09m1 stop
$449United Airlines
Find Deal
Thu, Aug 28 - Fri, Sep 5
United Airlines Logo
6:45 am - 6:44 pmSEA-CPR
10h 59m2 stops
United Airlines Logo
5:59 pm - 10:59 pmCPR-SEA
6h 00m1 stop
$454United Airlines
Find Deal
Wed, Aug 13 - Sat, Aug 16
United Airlines Logo
2:25 pm - 12:39 pmSEA-CPR
21h 14m1 stop
United Airlines Logo
5:59 pm - 10:59 pmCPR-SEA
6h 00m1 stop
$462United Airlines
Find Deal
Wed, Aug 13 - Sat, Aug 16
United Airlines Logo
6:25 am - 7:09 pmSEA-CPR
11h 44m2 stops
United Airlines Logo
11:25 am - 10:15 pmCPR-SEA
11h 50m2 stops
$484United Airlines
Find Deal
Thu, Aug 21 - Thu, Sep 4

United Airlines flights from Seattle to Casper

Our best United Airlines deals on Seattle to Casper flight tickets
United Airlines
Aug 30
SEA6:25 amSeattle/Tacoma Intl
14h 49m
2 stops
CPR10:14 pmCasper Natrona County
Sep 4
CPR5:50 pmCasper Natrona County
6h 09m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
United Airlines
Aug 30
SEA6:25 amSeattle/Tacoma Intl
12h 56m
2 stops
CPR8:21 pmCasper Natrona County
Sep 4
CPR9:10 amCasper Natrona County
14h 05m
2 stops
SEA10:15 pmSeattle/Tacoma Intl
United Airlines
Sep 3
SEA11:11 amSeattle/Tacoma Intl
6h 58m
1 stop
CPR7:09 pmCasper Natrona County
Sep 6
CPR9:10 amCasper Natrona County
9h 44m
1 stop
SEA5:54 pmSeattle/Tacoma Intl

momondo 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, momondo users made 832,500 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Seattle to Casper that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Sat 8/30

6:25 am-10:14 pm

2 stops14h 49m

Casper Natrona County

Thu 9/4

5:50 pm-10:59 pm

1 stop6h 09m

$314

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Sat 8/30

6:25 am-8:21 pm

2 stops12h 56m

Casper Natrona County

Thu 9/4

9:10 am-10:15 pm

2 stops14h 05m

$319

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Wed 9/3

11:11 am-7:09 pm

1 stop6h 58m

Casper Natrona County

Sat 9/6

9:10 am-5:54 pm

1 stop9h 44m

$338

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Sat 8/30

5:02 am-2:36 pm

1 stop8h 34m

Casper Natrona County

Thu 9/4

5:50 pm-10:59 pm

1 stop6h 09m

$394

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Tue 8/12

6:45 am-4:53 pm

2 stops9h 08m

Casper Natrona County

Sat 8/16

5:59 pm-10:59 pm

1 stop6h 00m

$405

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Thu 8/21

3:36 pm-10:14 pm

1 stop5h 38m

Casper Natrona County

Thu 9/4

11:25 am-10:15 pm

2 stops11h 50m

$429

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Thu 8/28

6:25 am-7:09 pm

2 stops11h 44m

Casper Natrona County

Fri 9/5

5:50 pm-10:59 pm

1 stop6h 09m

$449

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Wed 8/13

6:45 am-6:44 pm

2 stops10h 59m

Casper Natrona County

Sat 8/16

5:59 pm-10:59 pm

1 stop6h 00m

$454

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Wed 8/13

2:25 pm-12:39 pm

1 stop21h 14m

Casper Natrona County

Sat 8/16

5:59 pm-10:59 pm

1 stop6h 00m

$462

SeattleCasper

SEA - CPR

SEACPR

Seattle/Tacoma Intl

Thu 8/21

6:25 am-7:09 pm

2 stops11h 44m

Casper Natrona County

Thu 9/4

11:25 am-10:15 pm

2 stops11h 50m

$484

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Casper from

How to get the cheapest flight ticket from Seattle to Casper

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Casper?

The cheapest day to depart from Seattle to Casper is on a Wednesday when prices can be found for as low as $500. The most expensive day to fly to Casper is Tuesday, with ticket prices averaging around $778.

What is the cheapest time of day to depart on your flight to Casper?

The cheapest time of day to fly to Casper is in the morning when flights can be purchased for as low as $596. Flights to Casper are more costly in the afternoon, with an average ticket price of $753. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Seattle to Casper

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Casper according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Casper (SEA to CPR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Casper

Best Price Found

$268

Fastest flight time

4h 48m

Direct flights

None

Airports in Casper

1 airport
The best one-way flight to Casper from Seattle in the past 72 hours is $268. The best round-trip flight deal from Seattle to Casper found on momondo in the last 72 hours is $314.
The fastest flight from Seattle to Casper takes 4h 48m
There are no direct flights from Seattle to Casper. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Casper Natrona County Airport.
There is 1 airport near Casper: Casper Natrona County (CPR)

  • How far is Seattle/Tacoma Intl to Casper Natrona County by plane?

    Casper Natrona County is 843.3 mi away from Seattle/Tacoma Intl. Flights usually cover this in 4h 48m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Casper Natrona County Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Casper Natrona County Airport refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Casper Natrona County Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Casper Natrona County Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Casper Natrona County Airport.

  • What documentation or ID do you need to fly to Casper Natrona County Airport?

    The necessary travel and health documents for your Casper Natrona County Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Casper?


Best airlines flying from Seattle to Casper

Compare and see reviews for airlines that fly from Seattle to Casper with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $257Free CancellationRating
7.4
8,896 reviews
Search United Airlines flights

Traveling to a place near Casper?

Book flights to Casper if you plan to visit one of these locations
Rawlins
Evansville
Douglas

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Casper?

It is quick and easy to find Seattle to Casper flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Casper that suits you.

Can I find flights from Seattle to Casper with flexible booking policies on momondo?

Flights from Seattle to Casper with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Casper?

Once you have performed a search for Seattle to Casper flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Seattle to Casper right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Casper now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Casper and let you know when they change.


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1 adult
Sun 8/3
Sun 8/10

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