$407 Cheap Flights from Seattle (SEA) to Kosice (KSC)

View $407 flight on Wed, Apr 8, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Kosice (KSC-Barca)

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Cheap Flights from Seattle to Kosice (SEA-KSC)

Prices were available within the past 7 days and start at $407 for one-way flights and $492 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Apr 21 - Mon, May 4
SEA
Seattle
KSC
Kosice
$492 Roundtrip, found 2 days ago
$492
Roundtrip
found 2 days ago
Select United flight, departing Tue, Apr 21 from Seattle to Kosice, returning Mon, May 4, priced at $492 found 2 days ago
United
Tue, Mar 17 - Wed, Apr 1
SEA
Seattle
KSC
Kosice
$502 Roundtrip, found 1 day ago
$502
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 17 from Seattle to Kosice, returning Wed, Apr 1, priced at $502 found 1 day ago
United
Sun, Apr 12 - Mon, May 4
SEA
Seattle
KSC
Kosice
$506 Roundtrip, found 1 day ago
$506
Roundtrip
found 1 day ago
Select United flight, departing Sun, Apr 12 from Seattle to Kosice, returning Mon, May 4, priced at $506 found 1 day ago
Swiss International Air Lines
Tue, Apr 14 - Mon, May 4
SEA
Seattle
KSC
Kosice
$511 Roundtrip, found 1 day ago
$511
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, Apr 14 from Seattle to Kosice, returning Mon, May 4, priced at $511 found 1 day ago
United
Wed, Apr 29 - Mon, May 11
SEA
Seattle
KSC
Kosice
$511 Roundtrip, found 1 day ago
$511
Roundtrip
found 1 day ago
Select United flight, departing Wed, Apr 29 from Seattle to Kosice, returning Mon, May 11, priced at $511 found 1 day ago
United
Tue, Mar 10 - Thu, Mar 26
SEA
Seattle
KSC
Kosice
$512 Roundtrip, found 1 day ago
$512
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 10 from Seattle to Kosice, returning Thu, Mar 26, priced at $512 found 1 day ago
United
Sun, Apr 26 - Mon, May 11
SEA
Seattle
KSC
Kosice
$514 Roundtrip, found 1 day ago
$514
Roundtrip
found 1 day ago
Select United flight, departing Sun, Apr 26 from Seattle to Kosice, returning Mon, May 11, priced at $514 found 1 day ago
Air Canada
Tue, May 12 - Mon, May 25
SEA
Seattle
KSC
Kosice
$529 Roundtrip, found 1 day ago
$529
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, May 12 from Seattle to Kosice, returning Mon, May 25, priced at $529 found 1 day ago
Austrian Airlines
Fri, Jan 23 - Wed, Jan 28
SEA
Seattle
KSC
Kosice
$536 Roundtrip, found 6 days ago
$536
Roundtrip
found 6 days ago
Select Austrian Airlines flight, departing Fri, Jan 23 from Seattle to Kosice, returning Wed, Jan 28, priced at $536 found 6 days ago
Lufthansa
Fri, Jan 23 - Wed, Jan 28
SEA
Seattle
KSC
Kosice
$539 Roundtrip, found 6 days ago
$539
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Fri, Jan 23 from Seattle to Kosice, returning Wed, Jan 28, priced at $539 found 6 days ago

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Alternative airports near Kosice

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Barca KSC. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $1,060
KSC
Barca
CheapestClosest
Average driving time to city center11 min
Flights from $1,060
Flights from Seattle (SEA) to Kosice (KSC)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Barca
Airlines serving
Lufthansa
Roundtrip price
$491
Distance
5445 mi

Seattle to Kosice Flights

The cheapest times to fly from Seattle to Kosice

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 Kosice are during the month of April. You can find some of the cheapest flights from Seattle to Kosice with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Kosice

Sunday is one of the best days to book for cheap flights from Seattle to Kosice: 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 Kosice

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 Kosice in 2025. You can also book with separate airlines for your outbound and return journeys, from $407 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 Kosice 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 Kosice 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.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Barca Airport (KSC) cost?
Get a cheap one-way flight from $407 or cheap return flight from $492 from Seattle - Tacoma Intl. Airport (SEA) to Barca Airport (KSC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Barca Airport (KSC)?
April is the least expensive month to fly from SEA to KSC. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Barca Airport (KSC)?
To find the cheapest airline flying from SEA to KSC, 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 see the cheapest flights first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Barca Airport (KSC)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Barca Airport (KSC) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to KSC?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary 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 Barca Airport (KSC)?
To land at Barca Airport (KSC) on schedule, 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 Barca Airport (KSC) last-minute?
Last-minute fares from SEA to KSC are usually more expensive. For the lowest rates, start looking for flights as soon as possible. That being said, if you can play around with your travel dates, you may find a cheap ticket just before your departure.
Is it cheaper to book a SEA to KSC flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to KSC flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place takes the hassle out of planning your trip. Just secure your flights and select from our wide range of stays, then customize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Barca Airport (KSC)?
You can usually reschedule or cancel your SEA to KSC flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.