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Kos

$446+ Cheap flights from Seattle (SEA) to Kos (KGS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KGS
juin 18 — juin 251
jeu. 6/18
jeu. 6/25
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 mai 19, 2026.

This FlightHub deal was found by Cheapflights users on 5/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2710:10 am
SEA
-
KGS
2 stops23h 55m
Multiple Airlines
mar. 11/105:15 pm
KGS
-
SEA
2 stops28h 55m
Multiple Airlines
Deal found 5/15$1,095
This Justfly.com deal was found by Cheapflights users on 5/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 7/167:20 pm
SEA
-
KGS
2 stops38h 25m
Multiple Airlines
jeu. 7/2311:00 am
KGS
-
SEA
2 stops42h 06m
Multiple Airlines
Deal found 5/18$1,254
This Emirates deal was found by Cheapflights users on 5/17. 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.
dim. 9/275:15 pm
SEA
-
KGS
2 stops38h 20m
Emirates
jeu. 10/16:05 pm
KGS
-
SEA
2 stops29h 20m
Emirates
Deal found 5/17$1,898
This Emirates deal was found by Cheapflights users on 5/18. 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.
sam. 8/295:15 pm
SEA
-
KGS
2 stops62h 15m
Emirates
mer. 9/26:10 pm
KGS
-
SEA
2 stops29h 15m
Emirates
Deal found 5/18$1,948
This Emirates deal was found by Cheapflights users on 5/18. 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.
jeu. 7/25:15 pm
SEA
-
KGS
2 stops62h 15m
Emirates
jeu. 7/91:05 pm
KGS
-
SEA
2 stops34h 20m
Emirates
Deal found 5/18$2,333

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 mai 19, 2026.

Round-trip from

$1,095
(FlightHub)

One-way from

$446
(Kiwi.com)
From Seattle/Tacoma Intl to Kos
Search Deals
One-way flight from Seattle/Tacoma Intl to Kos
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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 mai 19, 2026.
Use the filters below to find and compare flights from Seattle to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

mar. 10/27

10:10 am-7:05 pm

2 stops23h 55m

Kos

mar. 11/10

5:15 pm-12:10 pm

2 stops28h 55m

$1,095

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

dim. 9/27

5:15 pm-5:35 pm

2 stops38h 20m

Kos

jeu. 10/1

6:05 pm-1:25 pm

2 stops29h 20m

$1,898

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

sam. 8/29

5:15 pm-5:30 pm

2 stops62h 15m

Kos

mer. 9/2

6:10 pm-1:25 pm

2 stops29h 15m

$1,948

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

jeu. 7/2

5:15 pm-5:30 pm

2 stops62h 15m

Kos

jeu. 7/9

1:05 pm-1:25 pm

2 stops34h 20m

$2,333

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

jeu. 7/16

2:10 pm-8:50 am

1 stop32h 40m

Kos

jeu. 7/23

11:25 am-11:55 am

1 stop34h 30m

$4,080
Cheapest one-way

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

ven. 7/31

3:40 pm-8:15 pm

2 stops42h 35m

$524

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

jeu. 7/30

11:25 pm-8:15 pm

2 stops58h 50m

$545
Quickest one-way

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

ven. 7/31

6:50 pm-7:45 pm

1 stop14h 55m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

Sorted by cheapest first

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.

  • How long is the flight from Seattle to Kos?

    For as low as $1,898, Emirates can have you in Kos from Seattle in 38h 20m. The distance from Seattle to Kos is about 6312 mi.

  • 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.

See more FAQs

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