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Kos

$625+ Cheap flights from Seattle (SEA) to Kos (KGS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KGS
Jan 30 — Feb 61
Fri 1/30
Fri 2/6
1 adult, Economy
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Cheap flight deals from Seattle to Kos

Best flights from Seattle to Kos
Discover carefully curated flight deals from Seattle to Kos that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 31, 2025.

This Gotogate deal was found by Cheapflights users on 12/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/113:10 pmSEA - KGS
2 stops34h 55mMultiple Airlines
Wed 2/188:35 pmKGS - SEA
2 stops25h 35mMultiple Airlines
Deal found 12/28$732
This Mytrip deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/133:40 pmSEA - KGS
3 stops34h 25mMultiple Airlines
Fri 2/209:05 pmKGS - SEA
3 stops35h 01mMultiple Airlines
Deal found 12/30$1,238
This Emirates deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/214:05 pmSEA - KGS
2 stops38h 45mEmirates
Sun 1/2512:35 pmKGS - SEA
2 stops58h 00mEmirates
Deal found 12/27$2,626
This Emirates deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/134:05 pmSEA - KGS
2 stops39h 00mEmirates
Fri 2/2012:35 pmKGS - SEA
2 stops34h 00mEmirates
Deal found 12/30$5,167

Find flight deals from Seattle to Kos

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Kos (KGS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 31, 2025.

Round-trip from

$732
(Gotogate)
From Seattle/Tacoma Intl to Kos
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Kos that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 31, 2025.
Use the filters below to find and compare flights from Seattle to Kos that are best for you.

Fly from

Seattle

Fly to

Kos

Route

Depart

Return

Price

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Wed 2/11

3:10 pm-12:05 pm

2 stops34h 55m

Kos

Wed 2/18

8:35 pm-12:10 pm

2 stops25h 35m

$732

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 2/13

3:40 pm-12:05 pm

3 stops34h 25m

Kos

Fri 2/20

9:05 pm-10:06 pm

3 stops35h 01m

$1,238

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Wed 1/21

4:05 pm-4:50 pm

2 stops38h 45m

Kos

Sun 1/25

12:35 pm-12:35 pm

2 stops58h 00m

$2,626

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 2/13

4:05 pm-5:05 pm

2 stops39h 00m

Kos

Fri 2/20

12:35 pm-12:35 pm

2 stops34h 00m

$5,167

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

Best time to book a flight from Seattle to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Seattle to Kos that include hotel bookings?

    Yes. In addition to deals on Seattle to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Kos.

  • Can I find deals for business class flights from Seattle to Kos?

    Yes. Cheapflights offers flight deals from Seattle to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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