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Kos

$1,065+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KGS
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap flight deals from Seattle to Kos

Cheapest flights from Seattle to Kos
Explore the most affordable flight options available from Seattle to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This SmartFares deal was found by Cheapflights users on 2/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/302:10 pm
SEA
-
KGS
2 stops24h 25m
Multiple Airlines
Mon 4/67:35 pm
KGS
-
SEA
3 stops37h 02m
Multiple Airlines
Deal found 2/13$1,065
This Gotogate deal was found by Cheapflights users on 2/12. 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.
Sun 3/298:00 am
SEA
-
KGS
2 stops30h 35m
Multiple Airlines
Sun 4/59:20 am
KGS
-
SEA
2 stops37h 00m
Multiple Airlines
Deal found 2/12$1,080
This Mytrip deal was found by Cheapflights users on 2/10. 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 3/273:00 pm
SEA
-
KGS
2 stops20h 05m
Multiple Airlines
Fri 4/310:25 pm
KGS
-
SEA
2 stops23h 55m
Multiple Airlines
Deal found 2/10$1,166
This Emirates deal was found by Cheapflights users on 2/11. 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 2/254:05 pm
SEA
-
KGS
2 stops39h 00m
Emirates
Sun 3/12:20 pm
KGS
-
SEA
2 stops56h 15m
Emirates
Deal found 2/11$2,253
This Emirates deal was found by Cheapflights users on 2/9. 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 3/275:05 pm
SEA
-
KGS
2 stops38h 30m
Emirates
Fri 4/31:05 pm
KGS
-
SEA
2 stops34h 20m
Emirates
Deal found 2/9$5,197
This Emirates deal was found by Cheapflights users on 2/12. 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.
Sun 3/295:15 pm
SEA
-
KGS
2 stops38h 20m
Emirates
Sun 4/51:05 pm
KGS
-
SEA
2 stops34h 20m
Emirates
Deal found 2/12$5,198

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 February 13, 2026.

Round-trip from

$1,166
(Mytrip)
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 February 13, 2026.
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

Mon 3/30

2:10 pm-12:35 am

2 stops24h 25m

Kos

Mon 4/6

7:35 pm-10:37 pm

3 stops37h 02m

$1,065

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Sun 3/29

8:00 am-12:35 am

2 stops30h 35m

Kos

Sun 4/5

9:20 am-12:20 pm

2 stops37h 00m

$1,080

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 3/27

3:00 pm-8:05 pm

2 stops20h 05m

Kos

Fri 4/3

10:25 pm-12:20 pm

2 stops23h 55m

$1,166

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Wed 2/25

4:05 pm-5:05 pm

2 stops39h 00m

Kos

Sun 3/1

2:20 pm-12:35 pm

2 stops56h 15m

$2,253

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

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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