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Cheap flights from Casper to Seattle from $281

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Casper to Seattle departing on 3/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Casper to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:30 am - 10:03 amCPR-SEA
5h 33m1 stop
United Airlines Logo
5:07 am - 12:35 pmSEA-CPR
6h 28m1 stop
$281United Airlines
Find Deal
dom, mar 8 - ter, mar 17
United Airlines Logo
5:30 am - 10:03 amCPR-SEA
5h 33m1 stop
United Airlines Logo
12:45 pm - 10:12 pmSEA-CPR
8h 27m2 stops
$287United Airlines
Find Deal
dom, mar 8 - ter, mar 17
United Airlines Logo
11:26 am - 6:03 pmCPR-SEA
7h 37m1 stop
United Airlines Logo
9:00 am - 2:40 pmSEA-CPR
4h 40m1 stop
$308United Airlines
Find Deal
sáb, fev 28 - ter, mar 3
United Airlines Logo
1:20 pm - 12:59 amCPR-SEA
12h 39m2 stops
United Airlines Logo
9:00 am - 5:01 pmSEA-CPR
7h 01m1 stop
$314United Airlines
Find Deal
sáb, fev 28 - ter, mar 3
United Airlines Logo
1:20 pm - 11:30 pmCPR-SEA
11h 10m2 stops
United Airlines Logo
12:15 pm - 10:09 pmSEA-CPR
8h 54m2 stops
$319United Airlines
Find Deal
sáb, fev 28 - ter, mar 3
United Airlines Logo
3:18 pm - 11:10 pmCPR-SEA
8h 52m1 stop
United Airlines Logo
3:40 pm - 10:15 pmSEA-CPR
5h 35m1 stop
$323United Airlines
Find Deal
sáb, nov 22 - sáb, dez 6
United Airlines Logo
11:26 am - 9:01 pmCPR-SEA
10h 35m3 stops
United Airlines Logo
8:45 am - 7:02 pmSEA-CPR
9h 17m2 stops
$324United Airlines
Find Deal
sáb, fev 28 - ter, mar 3
United Airlines Logo
6:05 pm - 11:10 pmCPR-SEA
6h 05m1 stop
United Airlines Logo
7:00 am - 8:33 pmSEA-CPR
12h 33m2 stops
$329United Airlines
Find Deal
sáb, nov 22 - sáb, dez 6
United Airlines Logo
5:30 am - 1:54 pmCPR-SEA
9h 24m1 stop
United Airlines Logo
8:40 am - 4:51 pmSEA-CPR
7h 11m1 stop
$353United Airlines
Find Deal
qua, nov 26 - ter, dez 9
United Airlines Logo
5:30 am - 1:54 pmCPR-SEA
9h 24m1 stop
United Airlines Logo
9:05 am - 10:15 pmSEA-CPR
12h 10m2 stops
$359United Airlines
Find Deal
qua, nov 26 - ter, dez 9

United Airlines flights from Casper to Seattle

Our best United Airlines deals on Casper to Seattle flight tickets
United Airlines
Mar 8
CPR5:30 amCasper Natrona County
5h 33m
1 stop
SEA10:03 amSeattle/Tacoma Intl
Mar 17
SEA5:07 amSeattle/Tacoma Intl
6h 28m
1 stop
CPR12:35 pmCasper Natrona County
$281
Find similar
United Airlines
Mar 8
CPR5:30 amCasper Natrona County
5h 33m
1 stop
SEA10:03 amSeattle/Tacoma Intl
Mar 17
SEA12:45 pmSeattle/Tacoma Intl
8h 27m
2 stops
CPR10:12 pmCasper Natrona County
$287
Find similar
United Airlines
Feb 28
CPR11:26 amCasper Natrona County
7h 37m
1 stop
SEA6:03 pmSeattle/Tacoma Intl
Mar 3
SEA9:00 amSeattle/Tacoma Intl
4h 40m
1 stop
CPR2:40 pmCasper Natrona County
$308
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated novembro 4, 2025.
Use the filters below to find and compare flights from Casper to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

dom 3/8

5:30 am-10:03 am

1 stop5h 33m

Seattle/Tacoma Intl

ter 3/17

5:07 am-12:35 pm

1 stop6h 28m

$281

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

dom 3/8

5:30 am-10:03 am

1 stop5h 33m

Seattle/Tacoma Intl

ter 3/17

12:45 pm-10:12 pm

2 stops8h 27m

$287

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

sáb 2/28

11:26 am-6:03 pm

1 stop7h 37m

Seattle/Tacoma Intl

ter 3/3

9:00 am-2:40 pm

1 stop4h 40m

$308

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

sáb 2/28

1:20 pm-12:59 am

2 stops12h 39m

Seattle/Tacoma Intl

ter 3/3

9:00 am-5:01 pm

1 stop7h 01m

$314

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

sáb 2/28

1:20 pm-11:30 pm

2 stops11h 10m

Seattle/Tacoma Intl

ter 3/3

12:15 pm-10:09 pm

2 stops8h 54m

$319

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

sáb 11/22

3:18 pm-11:10 pm

1 stop8h 52m

Seattle/Tacoma Intl

sáb 12/6

3:40 pm-10:15 pm

1 stop5h 35m

$323

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

sáb 2/28

11:26 am-9:01 pm

3 stops10h 35m

Seattle/Tacoma Intl

ter 3/3

8:45 am-7:02 pm

2 stops9h 17m

$324

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

sáb 11/22

6:05 pm-11:10 pm

1 stop6h 05m

Seattle/Tacoma Intl

sáb 12/6

7:00 am-8:33 pm

2 stops12h 33m

$329

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

qua 11/26

5:30 am-1:54 pm

1 stop9h 24m

Seattle/Tacoma Intl

ter 12/9

8:40 am-4:51 pm

1 stop7h 11m

$353

CasperSeattle

CPR - SEA

CPRSEA

Casper Natrona County

qua 11/26

5:30 am-1:54 pm

1 stop9h 24m

Seattle/Tacoma Intl

ter 12/9

9:05 am-10:15 pm

2 stops12h 10m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Casper to Seattle

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 typical price of a round-trip flight between Casper and Seattle?

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Casper to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $308. If you don’t want to visit Seattle in February, then you should wait until April to fly from Casper, when ticket prices are also cheap, with an average price of $343.

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

On average, the least expensive day to fly to Seattle from Casper is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $557. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Casper because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $718.

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

Flying to Seattle from Casper in the morning is the least expensive time of day to depart. momondo users have found prices as low as $568 when looking at flights departing in the morning. Flights to Seattle are more costly in the afternoon, with an average ticket price of $577. 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 Casper to Seattle

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

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

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

Direct flights

None
There are no direct flights from Casper to Seattle. There are no popular flight routes from Casper to Seattle.
Search flight deals

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

    Casper Natrona County and Seattle/Tacoma Intl are 843.3 mi apart from one another. Flights usually cover this in 5h 27m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Casper Natrona County Airport to Seattle/Tacoma Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Casper Natrona County Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Casper to Seattle

Compare and see reviews for airlines that fly from Casper to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $256Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights

Traveling to a place near Seattle?

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

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Casper.

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

Flights from Casper to Seattle 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 Casper to Seattle?

momondo helps you find the best flight between Casper and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Seattle from Casper. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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