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$920+ Cheap flights from Washington, D.C. (WAS) 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — KGS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Kos

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 17, 2025.

Round-trip from

$920
(Mytrip)
From Washington, D.C. (WAS) to Kos
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Find flight deals from Washington, D.C. to Kos

Cheapest flights from Washington, D.C. to Kos
Explore the most affordable flight options available from Washington, D.C. to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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.
Thu 10/307:00 pmIAD - KGS
2 stops18h 15mMultiple Airlines
Thu 11/68:40 pmKGS - IAD
3 stops30h 25mMultiple Airlines
Deal found 9/14$920
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/238:30 pmBWI - KGS
3 stops31h 15mMultiple Airlines
Tue 10/288:35 pmKGS - BWI
3 stops53h 05mMultiple Airlines
Deal found 9/15$1,001
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Tue 9/2310:20 pmIAD - KGS
3 stops34h 25mMultiple Airlines
Tue 10/288:35 pmKGS - IAD
3 stops31h 25mMultiple Airlines
Deal found 9/15$1,095
This Gotogate deal was found by Cheapflights users on 9/14. 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 10/306:59 amDCA - KGS
2 stops28h 06mMultiple Airlines
Thu 11/64:35 pmKGS - DCA
2 stops36h 21mMultiple Airlines
Deal found 9/14$1,288
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Thu 10/308:40 pmBWI - KGS
2 stops16h 35mMultiple Airlines
Thu 11/68:40 pmKGS - BWI
3 stops29h 00mMultiple Airlines
Deal found 9/14$1,309
This oojo deal was found by Cheapflights users on 9/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:39 pmDCA - KGS
2 stops24h 06mBritish Airways
Tue 10/286:15 pmKGS - DCA
2 stops31h 44mBritish Airways
Deal found 9/15$1,941
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:41 pmBWI - KGS
2 stops43h 04mBritish Airways
Tue 10/286:15 pmKGS - BWI
1 stop31h 30mBritish Airways
Deal found 9/15$1,969
This Emirates deal was found by Cheapflights users on 9/17. 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.
Tue 9/3010:55 amIAD - KGS
2 stops47h 35mEmirates
Tue 10/711:25 amKGS - IAD
2 stops52h 15mEmirates
Deal found 9/17$2,628
This business-class.com deal was found by Cheapflights users on 9/16. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/298:30 pmIAD - KGS
2 stops13h 35mMultiple Airlines
Sat 12/68:35 amKGS - IAD
2 stops18h 30mMultiple Airlines
Deal found 9/16$5,006

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 September 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Kos that are best for you.

Fly from

Washington, D.C.

Fly to

Kos

Route

Depart

Return

Price

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 10/30

7:00 pm-7:15 pm

2 stops18h 15m

Kos

Thu 11/6

8:40 pm-8:05 pm

3 stops30h 25m

$920

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Thu 10/30

6:59 am-5:05 pm

2 stops28h 06m

Kos

Thu 11/6

4:35 pm-9:56 pm

2 stops36h 21m

$1,288

BaltimoreKos

BWI - KGS

BWIKGS

Baltimore/Washington

Thu 10/30

8:40 pm-7:15 pm

2 stops16h 35m

Kos

Thu 11/6

8:40 pm-6:40 pm

3 stops29h 00m

$1,309

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Tue 9/30

10:55 am-5:30 pm

2 stops47h 35m

Kos

Tue 10/7

11:25 am-8:40 am

2 stops52h 15m

$2,628

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Sat 11/29

8:30 pm-5:05 pm

2 stops13h 35m

Kos

Sat 12/6

8:35 am-8:05 pm

2 stops18h 30m

$5,006

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Fri 10/3

10:55 am-5:30 pm

2 stops23h 35m

$10,083

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Best time to book a flight from Washington, D.C. to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Washington, D.C. 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, D.C. to Kos
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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, D.C.?

    Kos (KGS) is the airport you will fly into if you book a flight from Washington, D.C. to Kos. You should not have trouble finding flights to Kos from Washington, D.C.; the airport handles an average of 0 inbound flights from Washington, D.C. per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Kos airport from Washington, D.C.. It is only a 12.8 mi journey from Kos (KGS) to Kos’s city center.

  • How long is the flight from Washington, D.C. to Kos?

    There are many flights that can get you from Washington, D.C. to Kos in 47h 35m. Fly via Emirates to get the fastest option. Airlines will cover a distance of 5336 mi.

  • What are the most popular routes from Washington, D.C. to Kos?

    The most popular route from Washington, D.C. to Kos is Baltimore/Washington - Kos. You may also consider Washington, D.C. Reagan-National - Kos or Washington, D.C. Dulles Intl - Kos.

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

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

  • How can I find direct flights from Washington, D.C. to Kos?

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

  • Can I find deals for business class flights from Washington, D.C. to Kos?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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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