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Kos

$880+ Cheap flights from Washington 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KGS
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Washington to Kos

Keep the following information in mind while searching for Washington to Kos flight deals. Data was last updated May 1, 2025.

Round-trip from

$1,053
(Gotogate)

One-way from

$880
(Flightnetwork)
From Washington to Kos
Search Deals
One-way flight from Washington to Kos
Search Deals

Find flight deals from Washington to Kos

Cheapest flights from Washington to Kos
Explore the most affordable flight options available from Washington to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Gotogate deal was found by Cheapflights users on 4/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/101:45 pmSEA - KGS
2 stops20h 10mMultiple Airlines
Tue 6/178:30 pmKGS - SEA
2 stops32h 06mMultiple Airlines
Deal found 4/29$1,053
This Gotogate deal was found by Cheapflights users on 4/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/122:15 pmSEA - KGS
1 stop32h 35mLufthansa
Thu 6/197:30 pmKGS - SEA
1 stop26h 55mLufthansa
Deal found 4/29$1,266
This SWISS deal was found by Cheapflights users on 4/30. 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.
Sat 6/144:20 pmSEA - KGS
1 stop14h 45mSWISS
Sat 6/218:45 pmKGS - SEA
2 stops31h 51mSWISS
Deal found 4/30$1,328
This Emirates deal was found by Cheapflights users on 4/29. 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.
Thu 6/125:15 pmSEA - KGS
2 stops62h 15mEmirates
Thu 6/1911:25 amKGS - SEA
2 stops36h 00mEmirates
Deal found 4/29$2,026

Cheapflights Fare Finder

Customize your flight search to find flights from Washington 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 May 1, 2025.
Use the filters below to find and compare flights from Washington to Kos that are best for you.

Fly from

Washington

Fly to

Kos

Route

Depart

Return

Price

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Tue 6/10

1:45 pm-7:55 pm

2 stops20h 10m

Kos

Tue 6/17

8:30 pm-6:36 pm

2 stops32h 06m

$1,053

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Thu 6/12

2:15 pm-8:50 am

1 stop32h 35m

Kos

Thu 6/19

7:30 pm-12:25 pm

1 stop26h 55m

$1,266

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Sat 6/14

4:20 pm-5:05 pm

1 stop14h 45m

Kos

Sat 6/21

8:45 pm-6:36 pm

2 stops31h 51m

$1,328

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Thu 6/12

5:15 pm-5:30 pm

2 stops62h 15m

Kos

Thu 6/19

11:25 am-1:25 pm

2 stops36h 00m

$2,026

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Sat 6/14

5:30 am-5:05 pm

2 stops25h 35m

$880

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Sat 6/14

4:20 pm-5:05 pm

1 stop14h 45m

$888

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Fri 6/13

6:50 pm-7:25 pm

1 stop14h 35m

$3,012

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Best time to book a flight from Washington to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Washington 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 Washington 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 May 1, 2025.
Emirates
8.0
Very good
3,216 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Food

7.8

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.0
Very good
3,216 reviews
Emirates
8.0
Very good
3,216 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Food

7.8

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
SWISS
7.5
Good
1,588 reviews
Emirates
8.0
Very good
3,216 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Food

7.8

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Lufthansa
6.7
Okay
7,046 reviews
Emirates
8.0
Very good
3,216 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Food

7.8

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

Find useful and relevant information for your journey from Washington to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kos from Washington?

    Located just 12.8 mi from the city center, Kos (KGS) is the airport most travelers will use when flying to Kos from Washington.

  • Can I find deals for flights from Washington to Kos that include hotel bookings?

    Yes. In addition to deals on Washington to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Kos.

  • Can I find deals for business class flights from Washington to Kos?

    Yes. Cheapflights offers flight deals from Washington 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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Alternative routes for Washington to Kos

See prices for flight routes from nearby airports that may be better suited for you.
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