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Cheap flights from Washington, D.C. to Kos from $1,066

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Kos departing on 8/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 am - 10:15 pm
DCA
-
KGS
33h 15m
3 stops
Multiple Airlines Logo
9:00 pm - 10:31 pm
KGS
-
DCA
32h 31m
2 stops
$1,066Multiple Airlines
Thu, Aug 13 - Sun, Aug 23
Multiple Airlines Logo
6:00 am - 10:15 pm
DCA
-
KGS
33h 15m
3 stops
Multiple Airlines Logo
9:00 pm - 9:48 pm
KGS
-
DCA
31h 48m
3 stops
$1,070Multiple Airlines
Thu, Aug 13 - Sun, Aug 23
Multiple Airlines Logo
9:55 am - 10:15 pm
IAD
-
KGS
29h 20m
2 stops
Multiple Airlines Logo
9:00 pm - 8:24 pm
KGS
-
IAD
30h 24m
2 stops
$1,171Multiple Airlines
Thu, Aug 13 - Sun, Aug 23
SWISS Logo
8:20 pm - 3:10 pm
IAD
-
KGS
11h 50m
1 stop
SWISS Logo
3:15 pm - 4:45 pm
KGS
-
IAD
32h 30m
1 stop
$1,189SWISS
Thu, Aug 13 - Sun, Aug 23
Multiple Airlines Logo
3:45 pm - 4:25 pm
IAD
-
KGS
17h 40m
2 stops
Multiple Airlines Logo
3:15 pm - 4:45 pm
KGS
-
IAD
32h 30m
1 stop
$1,215Multiple Airlines
Thu, Aug 13 - Sun, Aug 23
Multiple Airlines Logo
8:40 pm - 10:00 pm
DCA
-
KGS
18h 20m
2 stops
Multiple Airlines Logo
9:00 pm - 10:31 pm
KGS
-
DCA
32h 31m
2 stops
$1,227Multiple Airlines
Thu, Aug 13 - Sun, Aug 23
Multiple Airlines Logo
4:20 pm - 10:00 pm
IAD
-
KGS
22h 40m
2 stops
Multiple Airlines Logo
9:00 pm - 8:24 pm
KGS
-
IAD
30h 24m
3 stops
$1,263Multiple Airlines
Thu, Aug 13 - Sun, Aug 23
Emirates Logo
10:55 am - 5:30 pm
IAD
-
KGS
47h 35m
2 stops
Emirates Logo
6:10 pm - 8:40 am
KGS
-
IAD
45h 30m
2 stops
$1,899Emirates
Sun, Aug 23 - Thu, Aug 27
Emirates Logo
10:55 am - 5:35 pm
IAD
-
KGS
47h 40m
2 stops
Emirates Logo
6:05 pm - 8:40 am
KGS
-
IAD
45h 35m
2 stops
$1,922Emirates
Fri, Oct 2 - Sun, Oct 11
Emirates Logo
10:55 am - 5:30 pm
IAD
-
KGS
23h 35m
2 stops
Emirates Logo
6:10 pm - 8:40 am
KGS
-
IAD
45h 30m
2 stops
$1,963Emirates
Sun, Aug 23 - Thu, Aug 27

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SWISS flights from Washington, D.C. to Kos

Our best SWISS deals on Washington, D.C. to Kos flight tickets
SWISS
Aug 13
IAD8:20 pmWashington, D.C. Dulles Intl
11h 50m
1 stop
KGS3:10 pmKos
Aug 23
KGS3:15 pmKos
32h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$1,189
SWISS
Jun 16
IAD8:20 pmWashington, D.C. Dulles Intl
16h 35m
1 stop
KGS7:55 pmKos
Jun 22
KGS11:00 amKos
36h 45m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$2,124
SWISS
Jun 16
IAD8:20 pmWashington, D.C. Dulles Intl
16h 35m
1 stop
KGS7:55 pmKos
Jun 24
KGS8:40 pmKos
27h 05m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$2,136

Emirates flights from Washington, D.C. to Kos

Our best Emirates deals on Washington, D.C. to Kos flight tickets
Emirates
Aug 23
IAD10:55 amWashington, D.C. Dulles Intl
47h 35m
2 stops
KGS5:30 pmKos
Aug 27
KGS6:10 pmKos
45h 30m
2 stops
IAD8:40 amWashington, D.C. Dulles Intl
$1,899
Emirates
Oct 2
IAD10:55 amWashington, D.C. Dulles Intl
47h 40m
2 stops
KGS5:35 pmKos
Oct 11
KGS6:05 pmKos
45h 35m
2 stops
IAD8:40 amWashington, D.C. Dulles Intl
$1,922
Emirates
Aug 23
IAD10:55 amWashington, D.C. Dulles Intl
23h 35m
2 stops
KGS5:30 pmKos
Aug 27
KGS6:10 pmKos
45h 30m
2 stops
IAD8:40 amWashington, D.C. Dulles Intl
$1,963

momondo 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, momondo users made 832,500 searches. Data last updated June 8, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Thu 8/13

6:00 am-10:15 pm

3 stops33h 15m

Kos

Sun 8/23

9:00 pm-10:31 pm

2 stops32h 31m

$1,066

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Thu 8/13

6:00 am-10:15 pm

3 stops33h 15m

Kos

Sun 8/23

9:00 pm-9:48 pm

3 stops31h 48m

$1,070

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 8/13

9:55 am-10:15 pm

2 stops29h 20m

Kos

Sun 8/23

9:00 pm-8:24 pm

2 stops30h 24m

$1,171
Quickest round-trip

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 8/13

8:20 pm-3:10 pm

1 stop11h 50m

Kos

Sun 8/23

3:15 pm-4:45 pm

1 stop32h 30m

$1,189

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 8/13

3:45 pm-4:25 pm

2 stops17h 40m

Kos

Sun 8/23

3:15 pm-4:45 pm

1 stop32h 30m

$1,215

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Thu 8/13

8:40 pm-10:00 pm

2 stops18h 20m

Kos

Sun 8/23

9:00 pm-10:31 pm

2 stops32h 31m

$1,227

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 8/13

4:20 pm-10:00 pm

2 stops22h 40m

Kos

Sun 8/23

9:00 pm-8:24 pm

3 stops30h 24m

$1,263

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Sun 8/23

10:55 am-5:30 pm

2 stops47h 35m

Kos

Thu 8/27

6:10 pm-8:40 am

2 stops45h 30m

$1,899

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Fri 10/2

10:55 am-5:35 pm

2 stops47h 40m

Kos

Sun 10/11

6:05 pm-8:40 am

2 stops45h 35m

$1,922

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Sun 8/23

10:55 am-5:30 pm

2 stops23h 35m

Kos

Thu 8/27

6:10 pm-8:40 am

2 stops45h 30m

$1,963

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Kos from

How to get the cheapest flight ticket from Washington, D.C. to Kos

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to Kos?

On average, it takes 31h 55m to fly from Washington, D.C. to Kos if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Kos (the most popular airport in Kos). If you’re flying out of Baltimore and into Kos, then the flight time is around 41h.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Kos according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Kos (WAS to KGS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Kos

Fastest flight time

23h 35m

Direct flights

None
The fastest flight from Washington, D.C. to Kos takes 23h 35m
There are no direct flights from Washington, D.C. to Kos. There are no popular flight routes from Washington, D.C. to Kos.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Kos

  • How far is Washington, D.C. to Kos by plane?

    A flight from Washington, D.C. to Kos will travel around 5324.1 mi. Typically, this will take 23h 35m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. to Kos Airport?

    Prices for flights from Washington, D.C. to Kos Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. to Kos Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Kos Airport.

  • What documentation or ID do you need to fly to Kos Airport?

    The required travel and health documents for your Kos Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kos Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Kos?

Book flights to Kos if you plan to visit one of these locations
Kardamena
Marmari

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Kos?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Kos. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Kos with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Kos from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Kos?

momondo helps you find the best flight between Washington, D.C. and Kos by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Kos right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Kos flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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