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Cheap flights from Washington, D.C. Reagan-National Airport to Kos from $600

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Kos departing on 9/1. 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. Reagan-National Airport to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:20 pm - 10:35 pm
DCA
-
KGS
23h 15m
2 stops
Multiple Airlines Logo
11:05 pm - 12:14 pm
KGS
-
DCA
44h 09m
3 stops
$1,194Multiple Airlines
Sun, Sep 6 - Sun, Sep 13
Multiple Airlines Logo
4:20 pm - 10:35 pm
DCA
-
KGS
23h 15m
3 stops
Multiple Airlines Logo
11:05 pm - 9:50 pm
KGS
-
DCA
29h 45m
3 stops
$1,231Multiple Airlines
Sun, Sep 6 - Sun, Sep 13
Multiple Airlines Logo
4:20 pm - 10:35 pm
DCA
-
KGS
23h 15m
2 stops
Multiple Airlines Logo
11:05 pm - 10:34 pm
KGS
-
DCA
30h 29m
2 stops
$1,248Multiple Airlines
Sun, Sep 6 - Sun, Sep 13
Multiple Airlines Logo
11:00 am - 8:45 pm
DCA
-
KGS
26h 45m
2 stops
Multiple Airlines Logo
8:35 am - 10:34 pm
KGS
-
DCA
20h 59m
3 stops
$1,502Multiple Airlines
Thu, Sep 3 - Mon, Sep 14
Multiple Airlines Logo
6:55 pm - 12:35 am
DCA
-
KGS
22h 40m
3 stops
Multiple Airlines Logo
8:35 am - 10:34 pm
KGS
-
DCA
20h 59m
3 stops
$1,560Multiple Airlines
Thu, Sep 3 - Mon, Sep 14
Multiple Airlines Logo
6:59 am - 8:50 pm
DCA
-
KGS
30h 51m
2 stops
Multiple Airlines Logo
8:50 pm - 9:50 pm
KGS
-
DCA
32h 00m
2 stops
$1,727Multiple Airlines
Thu, Sep 3 - Mon, Sep 14

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Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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 July 27, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport 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

Sun 9/6

4:20 pm-10:35 pm

2 stops23h 15m

Kos

Sun 9/13

11:05 pm-12:14 pm

3 stops44h 09m

$1,194

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Sun 9/6

4:20 pm-10:35 pm

3 stops23h 15m

Kos

Sun 9/13

11:05 pm-9:50 pm

3 stops29h 45m

$1,231

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Sun 9/6

4:20 pm-10:35 pm

2 stops23h 15m

Kos

Sun 9/13

11:05 pm-10:34 pm

2 stops30h 29m

$1,248

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Thu 9/3

11:00 am-8:45 pm

2 stops26h 45m

Kos

Mon 9/14

8:35 am-10:34 pm

3 stops20h 59m

$1,502
Quickest round-trip

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Thu 9/3

6:55 pm-12:35 am

3 stops22h 40m

Kos

Mon 9/14

8:35 am-10:34 pm

3 stops20h 59m

$1,560

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Thu 9/3

6:59 am-8:50 pm

2 stops30h 51m

Kos

Mon 9/14

8:50 pm-9:50 pm

2 stops32h 00m

$1,727
Cheapest one-way

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Tue 9/1

11:00 am-6:55 pm

2 stops24h 55m

$600

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Tue 9/1

12:27 pm-10:10 pm

2 stops26h 43m

$625
Quickest one-way

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Tue 9/1

6:23 pm-8:55 pm

2 stops19h 32m

$953

Washington, D.C.Kos

DCA - KGS

DCAKGS

Washington, D.C. Reagan-National

Tue 9/1

7:55 am-8:55 pm

2 stops30h 00m

$974

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Kos from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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 airline that flies from Washington, D.C. Reagan-National to Kos?

British Airways is the most popular carrier operating from Washington, D.C. Reagan-National to Kos

When to book flights from Washington, D.C. Reagan-National Airport to Kos

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport to Kos (DCA to KGS) flight deals and tips

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

Fastest flight time

26h 45m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Kos takes 26h 45m
There are no direct flights from Washington, D.C. Reagan-National Airport to Kos. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Kos.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Kos

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

    Washington, D.C. Reagan-National and Kos are 5326.5 mi apart from one another. A reasonable flight in good conditions will take 26h 45m.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Kos Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Reagan-National Airport to Kos Airport.

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

    The travel and health documents you'll need for your trip to Kos Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kos Airport. It is always advisable to seek advice from your airline or a trusted 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?

Finding the right flight to Kos from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kos quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Kos flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Kos.

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

If you are not ready to book a flight from Washington, D.C. to Kos now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Kos and let you know when they change.

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