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Casper

$308+ Cheap flights from Seattle to Casper (SEA - CPR)

SEA — CPR
Sep 17 — Sep 241
Thu 9/17
Thu 9/24
1 adult, Economy
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Cheap flight deals from Seattle to Casper

Cheapest flights from Seattle to Casper

Fri 10/303:49 pm -
1 stop5h 10m
Fri 11/65:57 pm -
1 stop6h 18m
Deal found 8/17$308
Thu 9/175:00 am -
1 stop4h 49m
Sun 9/205:15 am -
1 stop7h 42m
Deal found 8/18$332
Fri 8/282:34 pm -
1 stop4h 53m
Tue 9/17:05 am -
1 stop7h 17m
Deal found 8/14$338
Tue 9/298:30 am -
1 stop7h 33m
Sat 10/33:11 pm -
1 stop7h 04m
Deal found 8/16$388
Wed 8/2612:44 pm -
1 stop5h 25m
Sun 8/301:26 pm -
1 stop5h 16m
Deal found 8/17$398
Fri 8/286:30 am -
2 stops11h 39m
Thu 9/38:45 am -
1 stop9h 57m
Deal found 8/14$424

Find flight deals from Seattle to Casper

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$308
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$577
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. 7% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
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

Cheapest round-trip
Quickest round-trip

SeattleCasper

SEA Seattle/Tacoma Intl - CPR Casper Natrona County

SEACPR

Seattle/Tacoma Intl

Fri 10/30

3:49 pm-9:59 pm

1 stop5h 10m

Casper Natrona County

Sun 11/1

5:57 pm-11:15 pm

1 stop6h 18m

$308

SeattleCasper

SEA Seattle/Tacoma Intl - CPR Casper Natrona County

SEACPR

Seattle/Tacoma Intl

Fri 10/30

3:49 pm-9:59 pm

1 stop5h 10m

Casper Natrona County

Fri 11/6

5:57 pm-11:15 pm

1 stop6h 18m

$308

SeattleCasper

SEA Seattle/Tacoma Intl - CPR Casper Natrona County

SEACPR

Seattle/Tacoma Intl

Thu 9/17

5:00 am-10:49 am

1 stop4h 49m

Casper Natrona County

Sun 9/20

5:15 am-11:57 am

1 stop7h 42m

$332

SeattleCasper

SEA Seattle/Tacoma Intl - CPR Casper Natrona County

SEACPR

Seattle/Tacoma Intl

Fri 8/28

11:03 am-7:09 pm

1 stop7h 06m

Casper Natrona County

Thu 9/3

6:05 pm-11:04 pm

1 stop5h 59m

$338

SeattleCasper

SEA Seattle/Tacoma Intl - CPR Casper Natrona County

SEACPR

Seattle/Tacoma Intl

Fri 11/6

5:05 am-10:49 am

1 stop4h 44m

Casper Natrona County

Mon 11/9

1:29 pm-9:19 pm

1 stop8h 50m

$388

SeattleCasper

SEA Seattle/Tacoma Intl - CPR Casper Natrona County

SEACPR

Seattle/Tacoma Intl

Tue 9/29

8:30 am-7:09 pm

1 stop9h 39m

Casper Natrona County

Sat 10/3

3:11 pm-9:15 pm

1 stop7h 04m

$388
Cheapest one-way
Quickest one-way

SeattleCasper

SEA Seattle/Tacoma Intl - CPR Casper Natrona County

SEACPR

Seattle/Tacoma Intl

Sun 8/23

6:30 am-9:59 pm

2 stops14h 29m

$504

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Sorted by cheapest first

Compare providers for flights from Seattle to Casper

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Casper in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Casper flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

Cheapflights Insights

Everything you need to know about your flight from Seattle to Casper

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 $343). Flying from Seattle to Casper in December is currently the most expensive (average of $780). 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.

Reviews of airlines servicing Casper

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
10,100 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Food

6.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
United Airlines
7.4
Good
10,100 reviews
United Airlines
7.4
Good
10,100 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Food

6.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

Related info for your journey

  • How long is the flight from Seattle to Casper?

    There are many flights that can get you from Seattle to Casper in 5h 10m. 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 50% 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 $343). Flying from Seattle to Casper in December is currently the most expensive (average of $780). 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
Douglas

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Top airline flying from Seattle to Casper

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$432FlexibilityNo cancel feeOn-time69%

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