$1,532 Cheap Flights from Seattle (SEA) to Kosrae (KSA)

View $1,532 flight on Sun, Oct 5, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Kosrae (KSA-Kosrae Intl.)

Cheap Flights from Seattle to Kosrae (SEA-KSA)

Prices were available within the past 7 days and start at $1,532 for one-way flights and $1,819 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 29 - Mon, Nov 10
SEA
Seattle
KSA
Kosrae
$1,819 Roundtrip, found 6 days ago
$1,819
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 29 from Seattle to Kosrae, returning Mon, Nov 10, priced at $1,819 found 6 days ago
United
Tue, Oct 28 - Mon, Nov 10
SEA
Seattle
KSA
Kosrae
$1,849 Roundtrip, found 6 days ago
$1,849
Roundtrip
found 6 days ago
Select United flight, departing Tue, Oct 28 from Seattle to Kosrae, returning Mon, Nov 10, priced at $1,849 found 6 days ago
United
Wed, Dec 10 - Mon, Dec 29
SEA
Seattle
KSA
Kosrae
$1,952 Roundtrip, found 1 day ago
$1,952
Roundtrip
found 1 day ago
Select United flight, departing Wed, Dec 10 from Seattle to Kosrae, returning Mon, Dec 29, priced at $1,952 found 1 day ago
United
Sun, Nov 2 - Mon, Nov 10
SEA
Seattle
KSA
Kosrae
$1,981 Roundtrip, found 6 days ago
$1,981
Roundtrip
found 6 days ago
Select United flight, departing Sun, Nov 2 from Seattle to Kosrae, returning Mon, Nov 10, priced at $1,981 found 6 days ago
United
Tue, Dec 9 - Mon, Dec 29
SEA
Seattle
KSA
Kosrae
$1,984 Roundtrip, found 1 day ago
$1,984
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 9 from Seattle to Kosrae, returning Mon, Dec 29, priced at $1,984 found 1 day ago
United
Sat, Nov 1 - Mon, Nov 10
SEA
Seattle
KSA
Kosrae
$2,003 Roundtrip, found 6 days ago
$2,003
Roundtrip
found 6 days ago
Select United flight, departing Sat, Nov 1 from Seattle to Kosrae, returning Mon, Nov 10, priced at $2,003 found 6 days ago
United
Wed, Oct 29 - Mon, Nov 3
SEA
Seattle
KSA
Kosrae
$2,143 Roundtrip, found 6 days ago
$2,143
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 29 from Seattle to Kosrae, returning Mon, Nov 3, priced at $2,143 found 6 days ago
United
Sat, Nov 1 - Thu, Nov 6
SEA
Seattle
KSA
Kosrae
$2,165 Roundtrip, found 6 days ago
$2,165
Roundtrip
found 6 days ago
Select United flight, departing Sat, Nov 1 from Seattle to Kosrae, returning Thu, Nov 6, priced at $2,165 found 6 days ago
United
Tue, Oct 28 - Mon, Nov 3
SEA
Seattle
KSA
Kosrae
$2,174 Roundtrip, found 6 days ago
$2,174
Roundtrip
found 6 days ago
Select United flight, departing Tue, Oct 28 from Seattle to Kosrae, returning Mon, Nov 3, priced at $2,174 found 6 days ago
Alaska Airlines
Wed, Oct 29 - Tue, Nov 18
SEA
Seattle
KSA
Kosrae
$3,931 Roundtrip, found 6 days ago
$3,931
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Oct 29 from Seattle to Kosrae, returning Tue, Nov 18, priced at $3,931 found 6 days ago

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA) cost?
Snag a cheap one-way flight from $1,532 or cheap return flight from $1,819 from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA)?
October is the most affordable month to fly from SEA to KSA. Planning your trip for the off-season is often the key to scoring lower fares.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA)?
To find the cheapest airline flying from SEA to KSA, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA)?
There aren't any daily nonstop flights departing from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from SEA to KSA?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA)?
To land at Kosrae Intl. Airport (KSA) on time, choose a flight that takes off from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA) last-minute?
Last-minute fares from SEA to KSA are generally more expensive. To lock in the cheapest rates, start looking for flights as soon as possible. That being said, if you're flexible with your travel dates, you may find a cheap ticket right before your journey.
Is it cheaper to book a SEA to KSA flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to KSA flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the hassle out of travel planning. Just secure your flights and select from our extensive range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Kosrae Intl. Airport (KSA)?
Typically, you can cancel or reschedule your SEA to KSA flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further information, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Kosrae Intl.
Airlines serving
United
Roundtrip price
$1,819
Distance
5234 mi

Book with confidence

Book with confidence

Seattle to Kosrae Flights

The cheapest times to fly from Seattle to Kosrae

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Kosrae are during the month of October. You can find some of the cheapest flights from Seattle to Kosrae with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Kosrae

Sunday is one of the best days to book for cheap flights from Seattle to Kosrae: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Kosrae

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Kosrae in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,532 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Kosrae flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Kosrae airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Kosrae Flights
*Available to One Key members.