Cheap flights from Casper to Seattle from $328
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 11/9. 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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Fly from
Fly to
Route
Depart
Return
CasperSeattle
CPR Casper Natrona County - SEA Seattle/Tacoma Intl
CPRSEA
Casper Natrona County
Mon 11/9
5:15 am-9:47 am
1 stop5h 32m
Seattle/Tacoma Intl
Sun 11/15
5:05 am-10:49 am
1 stop4h 44m
CasperSeattle
CPR Casper Natrona County - SEA Seattle/Tacoma Intl
CPRSEA
Casper Natrona County
Mon 11/9
1:29 pm-9:50 pm
2 stops9h 21m
Seattle/Tacoma Intl
Sun 11/15
5:05 am-10:49 am
1 stop4h 44m
CasperSeattle
CPR Casper Natrona County - SEA Seattle/Tacoma Intl
CPRSEA
Casper Natrona County
Fri 10/23
11:23 am-5:37 pm
1 stop7h 14m
Seattle/Tacoma Intl
Tue 10/27
3:49 pm-9:59 pm
1 stop5h 10m
CasperSeattle
CPR Casper Natrona County - SEA Seattle/Tacoma Intl
CPRSEA
Casper Natrona County
Fri 10/23
10:06 am-4:03 pm
1 stop6h 57m
Seattle/Tacoma Intl
Tue 10/27
1:16 pm-9:59 pm
2 stops7h 43m
CasperSeattle
CPR Casper Natrona County - SEA Seattle/Tacoma Intl
CPRSEA
Casper Natrona County
Mon 12/21
6:00 pm-11:16 pm
1 stop6h 16m
Seattle/Tacoma Intl
Wed 12/30
5:00 am-10:58 am
1 stop4h 58m
CasperSeattle
CPR Casper Natrona County - SEA Seattle/Tacoma Intl
CPRSEA
Casper Natrona County
Sat 11/7
5:15 am-9:47 am
1 stop5h 32m
Seattle/Tacoma Intl
Sun 11/15
5:05 am-10:49 am
1 stop4h 44m
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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
When to book flights from Casper to Seattle
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
Frequently asked questions about flying from Casper to Seattle
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 32m, 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?
As of October 2026, there is 1 operator available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Casper to Seattle is United Airlines (100% of total bookings).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $298 | Free Cancellation | Rating 7.4 10,331 reviews |
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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.