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Cheap flights from Washington, D.C. to Kos from $920

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 10/30. 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
0 bags

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

Cheap round-trip flights

Multiple Airlines Logo
7:00 pm - 7:15 pmIAD-KGS
18h 15m2 stops
Multiple Airlines Logo
8:40 pm - 8:05 pmKGS-IAD
30h 25m3 stops
$920Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
6:30 pm - 11:30 amIAD-KGS
35h 00m3 stops
Multiple Airlines Logo
8:40 pm - 9:00 pmKGS-IAD
31h 20m3 stops
$1,012Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
6:30 pm - 11:05 pmIAD-KGS
22h 35m2 stops
Multiple Airlines Logo
7:20 pm - 9:00 pmKGS-IAD
32h 40m2 stops
$1,120Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
6:59 am - 5:05 pmDCA-KGS
28h 06m2 stops
Multiple Airlines Logo
4:35 pm - 9:56 pmKGS-DCA
36h 21m2 stops
$1,288Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
8:40 pm - 7:15 pmBWI-KGS
16h 35m2 stops
Multiple Airlines Logo
8:40 pm - 6:40 pmKGS-BWI
29h 00m3 stops
$1,309Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
8:40 pm - 9:15 pmBWI-KGS
18h 35m3 stops
Multiple Airlines Logo
8:40 pm - 6:40 pmKGS-BWI
29h 00m3 stops
$1,485Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
7:00 pm - 9:00 amIAD-KGS
32h 00m1 stop
Multiple Airlines Logo
7:20 pm - 7:30 pmKGS-IAD
31h 10m2 stops
$1,968Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Emirates Logo
10:55 am - 5:30 pmIAD-KGS
47h 35m2 stops
Emirates Logo
11:25 am - 8:40 amKGS-IAD
52h 15m2 stops
$2,628Emirates
Find Deal
Tue, Sep 30 - Tue, Oct 7
Multiple Airlines Logo
7:00 pm - 9:00 amIAD-KGS
32h 00m1 stop
Multiple Airlines Logo
7:20 pm - 8:05 pmKGS-IAD
31h 45m1 stop
$3,931Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
8:30 pm - 5:05 pmIAD-KGS
13h 35m2 stops
Multiple Airlines Logo
8:35 am - 8:05 pmKGS-IAD
18h 30m2 stops
$5,006Multiple Airlines
Find Deal
Sat, Nov 29 - Sat, Dec 6

British Airways flights from Washington, D.C. to Kos

Our best British Airways deals on Washington, D.C. to Kos flight tickets
British Airways
Sep 23
DCA1:39 pmWashington, D.C. Reagan-National
24h 06m
2 stops
KGS8:45 pmKos
Oct 28
KGS6:15 pmKos
31h 44m
2 stops
DCA7:59 pmWashington, D.C. Reagan-National
$1,941
Find similar
British Airways
Sep 23
BWI6:41 pmBaltimore/Washington
43h 04m
2 stops
KGS8:45 pmKos
Oct 28
KGS6:15 pmKos
31h 30m
1 stop
BWI7:45 pmBaltimore/Washington
$1,969
Find similar

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 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

Fly to

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

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 10/30

6:30 pm-11:30 am

3 stops35h 00m

Kos

Thu 11/6

8:40 pm-9:00 pm

3 stops31h 20m

$1,012

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 10/30

6:30 pm-11:05 pm

2 stops22h 35m

Kos

Thu 11/6

7:20 pm-9:00 pm

2 stops32h 40m

$1,120

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

BaltimoreKos

BWI - KGS

BWIKGS

Baltimore/Washington

Thu 10/30

8:40 pm-9:15 pm

3 stops18h 35m

Kos

Thu 11/6

8:40 pm-6:40 pm

3 stops29h 00m

$1,485

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Thu 10/30

7:00 pm-9:00 am

1 stop32h 00m

Kos

Thu 11/6

7:20 pm-7:30 pm

2 stops31h 10m

$1,968

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

Thu 10/30

7:00 pm-9:00 am

1 stop32h 00m

Kos

Thu 11/6

7:20 pm-8:05 pm

1 stop31h 45m

$3,931

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

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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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

What is the cheapest day to depart on your flight to Kos?

The cheapest day to depart from Washington, D.C. to Kos is on a Tuesday when prices can be found for as low as $1,026. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,792.

What is the cheapest time of day to depart on your flight to Kos?

Flying to Kos from Washington, D.C. in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,310 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,792 on average. Flights to Kos from Washington, D.C. in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights

None
There are no direct flights from Washington, D.C. to Kos. There are no popular flight routes from Washington, D.C. to Kos.
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  • 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 13h 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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