What is the cheapest flight from Washington, D.C. to Kos?

In the last 5 days, the lowest price for a flight from Washington, D.C. to Kos was $315 for a one-way ticket and $1,251 for a round-trip. Visit our flight page for the latest deals!>/a>

Do I need a passport to fly between Washington, D.C. and Kos?

Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in Kos. Visit our flight page for the latest deals!>/a>

Which airports will I be using when flying from Washington, D.C. to Kos?

On your way to Kos, you’ll fly out from one of these Washington, D.C. airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You’ll be landing at Kos. Visit our flight page for the latest deals!>/a>

Which aircraft models fly most regularly from Washington, D.C. to Kos?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Washington, D.C. to Kos?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Kos. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Kos?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kos from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Washington, D.C. to Kos?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Kos with an airline and back to Washington, D.C. with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Kos?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kos from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$315 CHEAP FLIGHTS from Washington, D.C. to Kos (WAS - KGS)

WAS - KGS

KAYAK searches hundreds of travel sites at once for deals on flights to Kos

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

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Cheapest round-trip

$1,251

Lufthansa, SWISS

Fri 7/31Fri 8/7

IAD - KGS • 1 stop

Cheapest one-way

$315

Multiple Airlines

Sun 7/19

BWI - KGS • 3 stops

Nonstop flights

Not available

There are currently no direct flights between Washington, D.C. and Kos. You'll need at least 1 connection.

Insights

Top layover airports

Zurich (ZRH)

Cheapest • Avg $671 (round-trip)

Frankfurt am Main (FRA)

Shortest trip • 12h 15m (one-way)

Insights

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Kos!

Flight Deals

Cheap Flights from Washington, D.C. to Kos (WAS-KGS)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Washington, D.C. to Kos

Fri, Jul 31 - Fri, Aug 7

10:20 pm - 7:45 pm

IAD

KGS

14h 25m

1 stop

3:55 pm - 4:45 pm

KGS

IAD

31h 50m

1 stop

$1,251Multiple Airlines

Fri, Jul 31 - Fri, Aug 7

9:45 am - 9:55 pm

IAD

KGS

29h 10m

2 stops

8:35 am - 7:25 pm

KGS

IAD

17h 50m

2 stops

$1,336Multiple Airlines

Fri, Jul 31 - Fri, Aug 7

3:45 pm - 12:35 am

IAD

KGS

25h 50m

2 stops

6:10 pm - 4:05 pm

KGS

IAD

28h 55m

3 stops

$1,391Multiple Airlines

Fri, Jul 31 - Fri, Aug 7

9:45 am - 11:10 pm

IAD

KGS

30h 25m

3 stops

6:00 am - 7:25 pm

KGS

IAD

20h 25m

3 stops

$1,512Multiple Airlines

Fri, Jul 31 - Fri, Aug 7

5:55 pm - 7:45 pm

IAD

KGS

18h 50m

2 stops

3:55 pm - 4:45 pm

KGS

IAD

31h 50m

1 stop

$1,558Multiple Airlines

Mon, Sep 21 - Fri, Sep 25

10:55 am - 5:30 pm

IAD

KGS

23h 35m

2 stops

6:10 pm - 8:40 am

KGS

IAD

45h 30m

2 stops

$1,821Emirates

Fri, Jul 31 - Fri, Aug 7

1:55 pm - 4:00 pm

BWI

KGS

19h 05m

2 stops

8:35 am - 10:58 pm

KGS

BWI

21h 23m

2 stops

$1,874Multiple Airlines

Sun, Aug 23 - Thu, Aug 27

10:55 am - 5:30 pm

IAD

KGS

47h 35m

2 stops

6:10 pm - 8:40 am

KGS

IAD

45h 30m

2 stops

$1,966Emirates

Mon, Sep 21 - Fri, Sep 25

10:55 am - 5:30 pm

IAD

KGS

23h 35m

2 stops

1:05 pm - 8:40 am

KGS

IAD

26h 35m

2 stops

$2,051Emirates

Fri, Jul 31 - Fri, Aug 7

8:18 pm - 7:50 pm

BWI

KGS

40h 32m

3 stops

10:40 am - 11:37 pm

KGS

BWI

19h 57m

2 stops

$2,980Multiple Airlines

Booking Insights

KAYAK's insights & trends for Washington, D.C. to Kos flights

Get data-powered insights and trends into flights from Washington, D.C. to Kos to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Washington, D.C. to Kos?

Zurich (ZRH) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Washington, D.C. to Kos picked an itinerary connecting there.

What is the cheapest layover airport when flying from Washington, D.C. to Kos?

Flights via Zurich (ZRH) offer the most affordable fares, with an average round-trip price of $671.

Which layover airport offers the shortest total travel time from Washington, D.C. to Kos?

Consider flying via Frankfurt am Main (FRA) for the shortest journey. The average one-way travel time for flights connecting there is 12h 15m.

Which layover airport has the quickest connection when flying from Washington, D.C. to Kos?

If you prefer a quick connection, Frankfurt am Main (FRA) often has the shortest layovers from Washington, D.C. to Kos, with an average of 1h 18m.

Find deals

When to book flights from Washington, D.C. to Kos

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Kos based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from Washington, D.C. to Kos?
In the last 5 days, the lowest price for a flight from Washington, D.C. to Kos was $315 for a one-way ticket and $1,251 for a round-trip.
Do I need a passport to fly between Washington, D.C. and Kos?
Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in Kos.
Which airports will I be using when flying from Washington, D.C. to Kos?
On your way to Kos, you’ll fly out from one of these Washington, D.C. airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You’ll be landing at Kos.
Which aircraft models fly most regularly from Washington, D.C. to Kos?
We unfortunately don’t have that data for this specific route.
How does KAYAK find such low prices on flights from Washington, D.C. to Kos?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Kos.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Kos?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kos from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington, D.C. to Kos?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Kos with an airline and back to Washington, D.C. with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Kos?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kos from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Washington, D.C. to Kos

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Information on your arrival and departure airports

Kos (KGS)

WAS - KGS

$315 Find Cheap Flights from Washington, D.C. to Kos - Compare and Save

KAYAK searches hundreds of travel sites at once for deals on flights to Kos

Everything you should know

Cheap Flights from Washington, D.C. to Kos (WAS-KGS)

Recent round-trip flight deals from Washington, D.C. to Kos

Recent one-way flight deals from Washington, D.C. to Kos

Recent last minute flight deals from Washington, D.C. to Kos

KAYAK's insights & trends for Washington, D.C. to Kos flights

What is the most popular layover airport when flying from Washington, D.C. to Kos?

What is the cheapest layover airport when flying from Washington, D.C. to Kos?

Which layover airport offers the shortest total travel time from Washington, D.C. to Kos?

Which layover airport has the quickest connection when flying from Washington, D.C. to Kos?

When to book flights from Washington, D.C. to Kos

FAQs for booking flights from Washington, D.C. to Kos

Everything you need to know for your flight from Washington, D.C. to Kos

Information on your arrival and departure airports

Cabin class types available on flights from Washington, D.C. to Kos

Complete your trip to Kos with a hotel stay or car rental

Find direct flights to and from Washington, D.C. and Kos

Flights to other popular destinations

Flights from domestic origins to Kos

Choose which airport to fly into in Kos