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Kos

$982+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KGS
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheap 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 April 15, 2025.

Round-trip from

$1,143
(Mytrip)

One-way from

$982
(Flightnetwork)
From Seattle/Tacoma Intl to Kos
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One-way flight from Seattle/Tacoma Intl to Kos
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Find 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 April 15, 2025.

This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/306:50 pmSEA - KGS
3 stops29h 55mMultiple Airlines
Fri 6/66:00 amKGS - SEA
3 stops28h 10mMultiple Airlines
Deal found 4/15$1,143
This Austrian Airlines deal was found by Cheapflights users on 4/15. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/308:00 amSEA - KGS
2 stops23h 55mAustrian Airlines
Fri 6/69:40 pmKGS - SEA
2 stops33h 01mAustrian Airlines
Deal found 4/15$1,579
This SWISS deal was found by Cheapflights users on 4/15. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/302:50 pmSEA - KGS
2 stops40h 15mSWISS
Fri 6/63:55 pmKGS - SEA
2 stops36h 38mSWISS
Deal found 4/15$1,638

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 April 15, 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

Fri 5/30

6:50 pm-10:45 am

3 stops29h 55m

Kos

Fri 6/6

6:00 am-12:10 am

3 stops28h 10m

$1,143

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 5/30

8:00 am-5:55 pm

2 stops23h 55m

Kos

Fri 6/6

9:40 pm-8:41 pm

2 stops33h 01m

$1,579

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 5/30

2:50 pm-5:05 pm

2 stops40h 15m

Kos

Fri 6/6

3:55 pm-6:33 pm

2 stops36h 38m

$1,638

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 5/30

7:15 pm-5:05 pm

2 stops35h 50m

$982

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 5/30

12:35 pm-5:05 pm

2 stops42h 30m

$993

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 5/30

6:50 pm-7:25 pm

1 stop14h 35m

$1,026

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Kos

Rainfall in Kos by month

Plan your trip to Kos by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kos ranges from 0.1 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. July is typically the driest time to visit Kos when rainfall is around 0.1 in.

Temperature in Kos by month

Plan your trip to Kos by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kos, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated April 15, 2025.
Austrian Airlines
7.6
Good
775 reviews

Overall

7.6

Crew

8.1

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.6
Good
775 reviews
Austrian Airlines
7.6
Good
775 reviews

Overall

7.6

Crew

8.1

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
SWISS
7.5
Good
1,578 reviews
Austrian Airlines
7.6
Good
775 reviews

Overall

7.6

Crew

8.1

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Lufthansa
6.7
Okay
7,002 reviews
Austrian Airlines
7.6
Good
775 reviews

Overall

7.6

Crew

8.1

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

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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