$1,056+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KGS
Oct 30 — Nov 61
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Kos
Cheapest
Best
Last-minute
Cheapest flights from Seattle to KosExplore 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 September 30, 2026.
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 September 30, 2026.
This Lucky2Go deal was found by Cheapflights users on 9/27. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:55 pm -
3 stops42h 30m
Thu 10/1510:05 pm -
2 stops31h 44m
Deal found 9/27![Multiple Airlines logo]()
$1,056
This Emirates deal was found by Cheapflights users on 9/29. 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 10/185:15 pm -
2 stops38h 20m
Thu 10/226:05 pm -
2 stops29h 20m
Deal found 9/29![Emirates logo]()
$1,830
This Emirates deal was found by Cheapflights users on 9/29. 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.
Sat 11/144:05 pm -
2 stops41h 55m
Sat 11/212:05 pm -
2 stops32h 30m
Deal found 9/29![Emirates logo]()
$9,360
Best flights from Seattle to KosDiscover 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 September 30, 2026.
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 September 30, 2026.
This Lucky2Go deal was found by Cheapflights users on 9/27. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:55 pm -
3 stops42h 30m
Thu 10/1510:05 pm -
2 stops31h 44m
Deal found 9/27![Multiple Airlines logo]()
$1,056
This Emirates deal was found by Cheapflights users on 9/25. 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 10/185:15 pm -
2 stops38h 20m
Thu 10/226:05 pm -
2 stops53h 20m
Deal found 9/25![Emirates logo]()
$1,830
This Emirates deal was found by Cheapflights users on 9/29. 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.
Sat 11/144:05 pm -
2 stops41h 55m
Sat 11/212:05 pm -
2 stops32h 30m
Deal found 9/29![Emirates logo]()
$9,360
Last-minute flights from Seattle to KosDiscover last-minute flight deals from Seattle to Kos. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Kos. Data last updated September 30, 2026 and is based on user searches.
This Lucky2Go deal was found by Cheapflights users on 9/27. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:55 pm -
3 stops42h 30m
Thu 10/1510:05 pm -
2 stops31h 44m
Deal found 9/27![Multiple Airlines logo]()
$1,056
This Emirates deal was found by Cheapflights users on 9/29. 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 10/185:15 pm -
2 stops38h 20m
Thu 10/226:05 pm -
2 stops29h 20m
Deal found 9/29![Emirates logo]()
$1,830
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 September 30, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,056 (Lucky2Go) |
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 7,457,451 searches. Data last updated September 30, 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
Cheapest round-trip
Quickest round-trip
SeattleKos
SEA Seattle/Tacoma Intl - KGS Kos
SEAKGS
Seattle/Tacoma Intl
Sun 10/11
3:55 pm-8:25 pm
3 stops42h 30m
Kos
Thu 10/15
10:05 pm-7:49 pm
2 stops31h 44m
$1,056
SeattleKos
SEA Seattle/Tacoma Intl - KGS Kos
SEAKGS
Seattle/Tacoma Intl
Sun 10/18
5:15 pm-5:35 pm
2 stops38h 20m
Kos
Thu 10/22
6:05 pm-1:25 pm
2 stops53h 20m
$1,830
SeattleKos
SEA Seattle/Tacoma Intl - KGS Kos
SEAKGS
Seattle/Tacoma Intl
Sat 11/14
4:05 pm-8:00 pm
2 stops41h 55m
Kos
Sat 11/21
2:05 pm-12:35 pm
2 stops32h 30m
$9,360
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Seattle-Kos flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Kos flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Seattle-Kos flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Kos flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Kos flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
SEA-KGS
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.
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