Title: Cheap Flights from Seattle (SEA) to Casper (CPR) - Expedia.ca ![Casper featuring golf and landscape views](https://images.trvl-media.com/place/6055899/008589a9-fc96-46ff-8eb9-c572559321cd.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Casper Area Convention and Visitors Bureau ![](https://images.trvl-media.com/place/6055899/008589a9-fc96-46ff-8eb9-c572559321cd.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Seattle (SEA) to Casper (CPR) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Seattle-Tacoma International Airport (SEA) to Casper, WY (CPR-Natrona County Intl.) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:cpr,departure:21/10/2025TANYT&leg2=from:cpr,to:sea,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Find the cheapest month to fly from Seattle (SEA) to Casper (CPR) ### February is typically the cheapest month to fly From CA $331 - CA $805 per traveller. ## Frequently asked questions ### How much is a flight from SEA to Natrona County Intl. Airport (CPR)? > If you're travelling between Sea-Tac Airport and Casper Airport, round-trip journeys start from . This price is based on airfares available within the last 7 days on Expedia for flights departing within the next year, so don't hang around. Book now and save yourself both money and time. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from SEA to Natrona County Intl. Airport (CPR)? > When it comes to cancellation fees, each airline has its own set of terms and conditions. If you decide to cancel your vacation, visit our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from SEA to Casper Airport that have flexible change policies? > Use our "No change fees" filter to find flexible travel options for your flight from Sea-Tac Airport to Natrona County Intl. Airport (CPR). This allows you to snag a fantastic price in advance and still have the freedom to make changes without any additional fees. Just keep in mind that fare differences may still apply. ### How many hours is the flight from SEA to Casper Airport? > The flight time between Seattle - Tacoma Intl. Airport (SEA) and Casper Airport is 3 hours and 56 minutes. If you get peckish on longer flights, pack some snacks in your carry-on luggage. ### How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Casper Airport? > You can forget about a movie marathon on this flight — it's only 1,350 kilometres from SeaTac to Casper. Find your seat, order a snack and you'll be there in next to no time. ### Which airlines fly direct from SEA to Casper Airport? > Currently, no airlines offer flights directly from Sea-Tac Airport to Natrona County Intl. Airport (CPR). You'll have to book a flight with at least one stop. To score the best price and connections, lock in your airfare well in advance. ### Are Seattle - Tacoma Intl. Airport (SEA) to Casper Airport flight tickets cheaper when they're purchased at the last minute? > Booking your trip from Sea-Tac Airport to Casper Airport at the last minute could be your ticket to a great deal. However, it might cost you a whole lot more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated on Expedia all the time. ## Travel information | Origin airport | Seattle - Tacoma Intl. | | --- | --- | | Destination airport | Natrona County Intl. | | Distance | 1329 km | ## Book with confidence ### Seattle to Casper Flights **The easy way to book your flights from Seattle to Casper**  With Expedia, it’s simple to find and book flights to Casper from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Natrona County Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Casper today, tomorrow, or this week.   **Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Natrona County Intl., CPR**  Sort your search results by price to find great deals on your flight from Seattle to Casper—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Casper from Seattle currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Casper   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Casper from Seattle**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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