SEA - CPR

$309 Find Cheap Flights from Seattle to Casper

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

KAYAK searches hundreds of travel sites at once for deals on flights to Casper

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Casper, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Casper, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$318
Overall average: $440
United Airlines
Fri 4/24Sun 4/26
SEA - CPR • 1 stop
Cheapest one-way
$309
United Airlines
Sat 8/8
SEA - CPR • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Seattle and Casper. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 31% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Casper!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Casper (SEA-CPR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Casper that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Casper

Fri, Apr 24 - Sun, Apr 26
United Airlines Logo
5:00 am - 10:47 am
SEA
-
CPR
4h 47m
1 stop
United Airlines Logo
5:25 am - 9:46 am
CPR
-
SEA
5h 21m
1 stop
$318United Airlines
Tue, Mar 31 - Sat, Apr 4
United Airlines Logo
5:00 am - 10:47 am
SEA
-
CPR
4h 47m
1 stop
United Airlines Logo
9:05 am - 1:17 pm
CPR
-
SEA
5h 12m
1 stop
$328United Airlines
Tue, Mar 31 - Sat, Apr 4
United Airlines Logo
5:00 am - 10:47 am
SEA
-
CPR
4h 47m
1 stop
United Airlines Logo
11:22 am - 8:57 pm
CPR
-
SEA
10h 35m
2 stops
$358United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
8:51 am - 6:59 pm
SEA
-
CPR
9h 08m
1 stop
United Airlines Logo
5:55 pm - 10:56 pm
CPR
-
SEA
6h 01m
1 stop
$368United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
5:00 am - 2:39 pm
SEA
-
CPR
8h 39m
1 stop
United Airlines Logo
11:22 am - 9:46 pm
CPR
-
SEA
11h 24m
2 stops
$374United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
8:42 am - 8:26 pm
SEA
-
CPR
10h 44m
2 stops
United Airlines Logo
9:05 am - 7:45 pm
CPR
-
SEA
11h 40m
2 stops
$379United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
8:51 am - 6:59 pm
SEA
-
CPR
9h 08m
1 stop
United Airlines Logo
5:25 am - 9:46 am
CPR
-
SEA
5h 21m
1 stop
$388United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
8:45 am - 10:07 pm
SEA
-
CPR
12h 22m
2 stops
United Airlines Logo
5:55 pm - 10:56 pm
CPR
-
SEA
6h 01m
1 stop
$394United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
11:35 am - 8:26 pm
SEA
-
CPR
7h 51m
2 stops
United Airlines Logo
11:22 am - 9:46 pm
CPR
-
SEA
11h 24m
2 stops
$399United Airlines
Thu, Jun 4 - Mon, Jun 8
United Airlines Logo
6:30 am - 9:59 pm
SEA
-
CPR
14h 29m
2 stops
United Airlines Logo
6:13 pm - 11:10 pm
CPR
-
SEA
5h 57m
1 stop
$409United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Casper flights

Get data-powered insights and trends into flights from Seattle to Casper to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Casper?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Casper, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Casper is September, where tickets cost $324 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $850 and $597 respectively.

Find deals

Good to know

Low seasonMay
Cheapest flight$309
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Seattle to Casper

When to book flights from Seattle to Casper

Are your dates flexible? Find out the best times to travel from Seattle to Casper based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Casper

  • What is the cheapest flight from Seattle to Casper?

    In the last 3 days, the lowest price for a flight from Seattle to Casper was $318 for a round-trip ticket.

  • Do I need a passport to fly between Seattle and Casper?

    No, a passport isn't needed to fly from Seattle to Casper. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Seattle to Casper?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Casper?

    Star Alliance is the only airline alliance operating flights between Seattle and Casper.

  • How does KAYAK find such low prices on flights from Seattle to Casper?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Casper.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Casper?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Casper from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Casper?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Casper with an airline and back to Seattle with another airline. Booking your flights between Seattle and CPR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Casper?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Casper from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seattle to Casper

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Casper. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Casper? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9435 reviews
7.1Entertainment
7.7Boarding
7.3Comfort
8.1Crew
6.6Food
Airline reviews

OK, we were delayed and had to de plane and reboard.

6.0 GoodJamie, Mar 2026
LAX - EWR
Read more United Airlines reviews

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It’s always a great time flying with united airlines.

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

Information on your arrival and departure airports

Seattle (SEA)
Casper (CPR)