Cheap flights from Seattle to Kos from $379

Cheap flights from Seattle to Kos from $379

Trusted by millions

Kiwi.com Guarantee for stress-free travel

One search, all the best deals

Explore flight deals to Kos

3 stops
Mon, Apr 27
Seattle SEAKos KGS

$379
Search
3 stops
Mon, Apr 27
Seattle SEAKos KGS

$401
Search
3 stops
Mon, Apr 27
Seattle SEAKos KGS

$419
Search
3 stops
Mon, Apr 27
Seattle SEAKos KGS

$441
Search
3 stops
Fri, May 1
Seattle SEAKos KGS

$503
Search
2 stops
Mon, Apr 27
Seattle SEAKos KGS

$508
Search

Not happy with the results? Try some of our useful filters

3 stops
Mon, Apr 27 – Mon, May 4
Seattle SEAKos KGS

$925
Search
3 stops
Mon, Apr 27 – Sat, May 2
Seattle SEAKos KGS

$931
Search
3 stops
Mon, Apr 27 – Sat, May 2
Seattle SEAKos KGS

$952
Search
3 stops
Mon, Apr 27 – Sat, May 2
Seattle SEAKos KGS

$952
Search
3 stops
Mon, Apr 27 – Mon, May 4
Seattle SEAKos KGS

$956
Search
2 stops
Mon, Apr 27 – Sat, May 2
Seattle SEAKos KGS

$1,016
Search

Not happy with the results? Try some of our useful filters

Key info about flying to Kos

Depart from
Seattle–Tacoma International
Arrive to
Kos Island International
Average flights per week
400
Flight distance

Check-in for a flight from Seattle to Kos

NameCarrier codeIATA CodePassport needed during booking
AegeanAEEA3No
KLM Royal Dutch AirlinesKLMKLNo
RyanairRYRFRNo
SKY expressSEHGQNo
Air FranceAFRAFNo

Weather in Kos

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January14°C11°C
February14°C11°C
March15°C12°C
April18°C14°C
May21°C18°C
June25°C21°C
July28°C24°C
August28°C24°C
September26°C22°C
October22°C19°C
November19°C16°C
December15°C13°C
Hottest Month
28°C
July
Coldest month
11°C
January
Sunny days
317
days per year

14 day forecast

Saturday
11 Apr
15°C13°C
18 Apr
88%
18°C16°C
Sunday
12 Apr
16°C12°C
19 Apr
19°C13°C
Monday
13 Apr
18°C13°C
20 Apr
17°C14°C
Tuesday
14 Apr
18°C16°C
21 Apr
83%
18°C15°C
Wednesday
15 Apr
20°C16°C
22 Apr
17°C15°C
Thursday
16 Apr
21°C18°C
23 Apr
85%
18°C14°C
Friday
17 Apr
87%
20°C16°C
24 Apr
18°C15°C
Travelers usually depart from Seattle–Tacoma International, Kenmore Air Harbor Seaplane Base, or Boeing Field when they travel from Seattle to Kos. The most popular airlines for this route are Aegean, KLM Royal Dutch Airlines, Ryanair, SKY express, and Air France. Seattle and Kos have 400 direct flights per week.

Frequently asked questions

What are the most popular routes to and from Seattle?
What are the most popular routes to and from Kos?
Which airports are there in Seattle?
What airports are near Seattle?
What airports are near Kos?
Which airlines fly between Seattle and Kos?
When’s the best time to travel between Seattle and Kos?
What flights operate between Seattle and Kos?
How many airports are there near Seattle?
How many airports are there near Kos?
What time do nonstop (direct) flights between Seattle and Kos depart?
What time do nonstop (direct) flights between Seattle and Kos arrive?
What time do flights between Seattle and Kos depart?
What time do flights between Seattle and Kos arrive?

Explore alternative trips

Flights from Seattle

Flights to Kos

Popular routes

The nearest countries with flights to Kos

Here is a list of countries people are flying from

Other destination countries from Seattle

Here is a list of countries people are flying to

Download our app

Start your next adventure now. Download our app and explore cheap flights effortlessly!

Find the best connection from Seattle to Kos
Search flights