$474 Cheap United flights from Seattle to Casper (SEA to CPR)

Find The Best Day To Fly from Seattle to Casper

Amazing United SEA to CPR Flight Deals

The cheapest flights to Natrona County Intl. found within the past 7 days were round trip and $474 one way. Prices and availability subject to change. Additional terms may apply.

CPR From SEA Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Royal Inn

Royal Inn

2 out of 5
Price was $690, price is now $630 per person
$630
per person
Mar 30 - Apr 4
found 14 hours ago
Roundtrip non-stop flight included
Seattle (SEA) to Casper (CPR)
Riverside Hotel

Riverside Hotel

2.5 out of 5
Price was $792, price is now $712 per person
$712
per person
Mar 30 - Apr 4
found 14 hours ago
Roundtrip non-stop flight included
Seattle (SEA) to Casper (CPR)
Studio 6 Casper, WY

Studio 6 Casper, WY

2 out of 5
Price was $719, price is now $652 per person
$652
per person
Mar 30 - Apr 4
found 14 hours ago
Roundtrip non-stop flight included
Seattle (SEA) to Casper (CPR)
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Frequently asked questions

Can I catch a flight from SEA to CPR right now?
Be sure to check out the Covid-19 Travel Advisor to learn if there are any present travel advice reports and quarantine requirements in place in Casper Airport when flying from Sea-Tac Airport.
What terminal is United Airlines at Sea-Tac Airport?
Once you're issued with the boarding pass for your United Airlines flight from Sea-Tac Airport to Natrona County Intl. Airport (CPR), you should be able to see which terminals you'll be jetting in and out of. Your carrier will have the answers if you can't find those details on your ticket.
Are there United Airlines non-stop flights from SEA to CPR?
Prepare to make a stopover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Casper Airport, as United Airlines doesn't offer any nonstop flights on this route. While in transit, you might like to buy a newspaper or a travel magazine from the airport bookstore to make the time go quicker.
How long is a United Airlines flight from SEA to CPR?
Your United Airlines flight will get you from Sea-Tac Airport to Natrona County Intl. Airport (CPR) in just 3 hours and 58 minutes. If you're not a huge fan of chatting to fellow travelers while you're thousands of feet in the air, don't fret — you won't have to natter for too long.
How many direct and indirect flights does United Airlines fly from SEA to CPR?
United Airlines operates no fewer than 4 flights daily from SEA to Natrona County Intl. Airport (CPR).
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Casper Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Seattle SEA to Casper CPR 

To find the best deals on flights to Seattle from Casper with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Seattle SEA to Casper CPR with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from to , it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Seattle SEA to Casper CPR 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Seattle to Casper costs from $474. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Casper CPR from  Seattle SEA with United 

To find a cheap United flight from Seattle SEA to Casper CPR, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Seattle SEA to Casper CPR 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as , or if you book a flight with a stopover. 

 

Find nonstop flights from Seattle SEA to Casper CPR with United 

If you’re keen to be on Casper soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Seattle SEA to Casper CPR 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Casper CPR from  Seattle SEA with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Casper

Spacious 5-bedroom house with WiFi, AC in Weat Casper

Spacious 5-bedroom house with WiFi, AC in Weat Casper

Casper WY
This vacation home featured laundry facilities and barbecue grills.
Spacious 5-bedroom house with WiFi, AC in Weat Casper
Studio Style Guesthouse

Studio Style Guesthouse

2 out of 5
Mills WY
Stay at this cottage in Casper. Enjoy air conditioning. Popular attractions Fort Casper Museum and Fort Caspar are located nearby.
Studio Style Guesthouse
Hampton Inn & Suites Casper

Hampton Inn & Suites Casper

2.5 out of 5
1100 N Poplar St Casper WY
This hotel features an indoor pool and a gym. Traveling on business? Take advantage of the business center and free WiFi in public areas. Guests will appreciate ...
9/10 Wonderful! (1,000 reviews)
We really enjoyed our stay the Hampton Inn and Suites. The room was very clean and cozy. There was a place to store all our belongings. The staff was very friendly and the breakfast had a lot of great options. I also liked the board games and coloring pages they had out for kids and families. I would ...

Reviewed on Jan 2, 2026

Hampton Inn & Suites Casper
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.