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Cheap flights from Washington, D.C. Dulles Intl Airport to Kos from $2,221

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. Dulles Intl Airport to Kos departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Kos

Cheap round-trip flights

Emirates Logo
10:55 am - 5:30 pmIAD-KGS
23h 35m2 stops
Emirates Logo
11:25 am - 8:40 amKGS-IAD
28h 15m2 stops
$2,221Emirates
Find Deal
Wed, Oct 1 - Wed, Oct 8

Lufthansa flights from Washington, D.C. Dulles Intl Airport to Kos

Our best Lufthansa deals on Washington, D.C. Dulles Intl Airport to Kos flight tickets
Lufthansa
Aug 19
IAD10:20 pmWashington, D.C. Dulles Intl
13h 45m
1 stop
KGS7:05 pmKos
Aug 25
KGS12:40 pmKos
31h 50m
2 stops
IAD1:30 pmWashington, D.C. Dulles Intl
$1,419
Find similar
Lufthansa
Aug 19
IAD6:10 pmWashington, D.C. Dulles Intl
17h 55m
2 stops
KGS7:05 pmKos
Aug 25
KGS12:40 pmKos
31h 50m
2 stops
IAD1:30 pmWashington, D.C. Dulles Intl
$1,444
Find similar
Lufthansa
Aug 19
IAD5:16 pmWashington, D.C. Dulles Intl
18h 49m
2 stops
KGS7:05 pmKos
Aug 25
KGS12:40 pmKos
39h 39m
2 stops
IAD9:19 pmWashington, D.C. Dulles Intl
$1,468
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl 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 August 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

Wed 10/1

10:55 am-5:30 pm

2 stops23h 35m

Kos

Wed 10/8

11:25 am-8:40 am

2 stops28h 15m

$2,221

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. Dulles Intl 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 day to depart on your flight to Kos?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Kos

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

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

Best Price Found

$2,221

Fastest flight time

23h 35m

Direct flights

None

Airports in Kos

1 airport
The best flight deal from Washington, D.C. Dulles Intl Airport to Kos found on momondo in the last 72 hours is $2,221
The fastest flight from Washington, D.C. Dulles Intl Airport to Kos takes 23h 35m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Kos. Popular non-direct route for this connection is Washington, D.C. Dulles Intl Airport - Kos Airport.
There is 1 airport near Kos: Kos (KGS)
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  • How far is Washington, D.C. Dulles Intl to Kos by plane?

    Kos is 5340.0 mi away from Washington, D.C. Dulles Intl. Flights usually cover this in 23h 35m, depending on flying conditions and air traffic around both airports.

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

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

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kos from Washington, D.C..

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

Flights from Washington, D.C. to Kos with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Washington, D.C. to Kos flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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 simply researching potential flights to Kos, momondo offers a useful price alert feature which will track prices for flights to Kos from Washington, D.C. and alert you when they change.

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