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Flights from Washington D.C. to Kos
Cheap flight deals from Washington D.C. to Kos
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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IAD 20:4530h 30m1 stopsKGS 10:15Washington D.C. - Kos | Tue, Apr 22 | Swiss AirlinesKGS 19:3027h 45m1 stopsIAD 16:15Kos - Washington D.C. | Mon, Apr 28 | Swiss AirlinesAED 3,262 AED 3,93017% OFF17% OFFAED 3,930 AED 3,262
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IAD 17:3533h 40m1 stopsKGS 10:15Washington D.C. - Kos | Tue, Apr 22 | United AirlinesKGS 19:3027h 45m1 stopsIAD 16:15Kos - Washington D.C. | Mon, Apr 28 | Swiss AirlinesAED 3,960 AED 4,77117% OFF17% OFFAED 4,771 AED 3,960
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IAD 17:3533h 40m1 stopsKGS 10:15Washington D.C. - Kos | Tue, May 6 | United AirlinesKGS 06:0016h 45m1 stopsIAD 15:45Kos - Washington D.C. | Tue, May 13 | Aegean AirlinesAED 4,025 AED 4,84917% OFF17% OFFAED 4,849 AED 4,025
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IAD 22:2013h 45m1 stopsKGS 19:05Washington D.C. - Kos | Tue, May 6 | LufthansaKGS 06:0016h 45m1 stopsIAD 15:45Kos - Washington D.C. | Tue, May 13 | Aegean AirlinesAED 4,09617% OFFAED 4,935 AED 4,096
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IAD 17:1034h 45m1 stopsKGS 10:55Washington D.C. - Kos | Sun, May 4 | Brussels AirlinesKGS 06:0016h 45m1 stopsIAD 15:45Kos - Washington D.C. | Sun, May 11 | Aegean AirlinesAED 4,38117% OFFAED 5,278 AED 4,381
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IAD 17:1015h 35m1 stopsKGS 15:45Washington D.C. - Kos | Tue, Apr 22 | Brussels AirlinesKGS 22:2524h 20m1 stopsIAD 15:45Kos - Washington D.C. | Mon, Apr 28 | SKY expressAED 4,70217% OFFAED 5,666 AED 4,702
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IAD 20:4515h1 stopsKGS 18:45Washington D.C. - Kos | Sun, May 11 | Swiss AirlinesKGS 11:2533h 50m1 stopsIAD 14:15Kos - Washington D.C. | Sun, May 18 | Brussels AirlinesAED 4,96417% OFFAED 5,981 AED 4,964
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IAD 17:1017h 20m1 stopsKGS 17:30Washington D.C. - Kos | Tue, Apr 22 | LufthansaKGS 19:3026h 45m1 stopsIAD 15:15Kos - Washington D.C. | Mon, Apr 28 | Swiss AirlinesAED 5,16017% OFFAED 6,217 AED 5,160
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IAD 22:2014h 5m1 stopsKGS 19:25Washington D.C. - Kos | Fri, May 9 | LufthansaKGS 21:4023h 55m1 stopsIAD 14:35Kos - Washington D.C. | Fri, May 16 | Austrian AirlinesAED 5,30517% OFFAED 6,391 AED 5,305
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IAD 20:4516h 10m1 stopsKGS 19:55Washington D.C. - Kos | Fri, May 9 | Swiss AirlinesKGS 21:4023h 55m1 stopsIAD 14:35Kos - Washington D.C. | Fri, May 16 | Austrian AirlinesAED 5,30717% OFFAED 6,394 AED 5,307
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WAS 13:0017h 25m1 stopsKGS Invalid DateWashington D.C. - Kos | Fri, Apr 4 | Normal AirlineKGS 15:006hNonstopWAS 16:00Kos - Washington D.C. | Sun, Apr 6 | Normal AirlineFind More FlightsFind More Flights
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IAD 17:5021h 50m1 stopsKGS 22:40Washington D.C. - Kos | Sun, May 18 | Virgin AtlanticAED 2,333 AED 2,81117% OFF17% OFFAED 2,811 AED 2,333
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IAD 18:3021h 10m1 stopsKGS 22:40Washington D.C. - Kos | Sun, May 18 | United AirlinesAED 2,355 AED 2,83817% OFF17% OFFAED 2,838 AED 2,355
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IAD 22:4017h1 stopsKGS 22:40Washington D.C. - Kos | Sun, May 18 | IberiaAED 2,380 AED 2,86717% OFF17% OFFAED 2,867 AED 2,380
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IAD 22:4017h1 stopsKGS 22:40Washington D.C. - Kos | Sun, May 18 | FinnairAED 2,79717% OFFAED 3,370 AED 2,797
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IAD 17:2519h 35m1 stopsKGS 20:00Washington D.C. - Kos | Sun, May 18 | Austrian AirlinesAED 3,09917% OFFAED 3,734 AED 3,099
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IAD 20:4515h1 stopsKGS 18:45Washington D.C. - Kos | Sun, May 18 | Swiss AirlinesAED 3,10217% OFFAED 3,737 AED 3,102
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IAD 17:1017h 20m1 stopsKGS 17:30Washington D.C. - Kos | Sun, May 18 | LufthansaAED 3,54917% OFFAED 4,275 AED 3,549
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IAD 17:1017h 20m1 stopsKGS 17:30Washington D.C. - Kos | Sun, May 18 | Brussels AirlinesAED 3,56117% OFFAED 4,291 AED 3,561
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WAS 13:0017h 25m1 stopsKGS Invalid DateWashington D.C. - Kos | Fri, Apr 4 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Washington D.C. (WAS) to Kos (KGS) the cheapest?
Airlines adjust prices for flights from Washington D.C. to Kos based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Washington D.C. (WAS) to Kos (KGS) cost?
According to Trip.com's data, the lowest price is around AED 5,059. -
What is the transportation method from the main airport to downtown in Kos?
- The distance from Kos Airport to downtown is about 1 km, by taxi about 20 minutes.
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How many airports are there in Kos (KGS)?
There are 1 airport(s) near Kos (KGS): Kos Airport.
How to find a cheap flight from Washington D.C. to Kos
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Washington D.C. to Kos. Book your flights at the right time and save more.
Being flexible with your dates to get the cheapest Washington D.C. to Kos ticket.
Tap "Date" on flight search bar to scan through the calender for Washington D.C. to Kos airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Sun, May 18 at AED 2333 for one-way flights.
Compare cheap Washington D.C. to Kos flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Washington D.C. to Kos. The cheapest airline operating is Virgin Atlantic.
Set up a Price Alert
By setting up a Price Alert for your Washington D.C. to Kos route, you can easily track the price of your airline tickets from without manually checking every day.
Don't miss cheap Washington D.C. to Kos flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from Washington D.C. to Kos to get exclusive deals for you.
Flight Info | Washington D.C. to Kos
Cheapest one-way flight price | AED 2,333 |
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Off-season for travel | May |
Peak season for travel | February |
Flight distance | 8,569.23 km |
Popular airline | ITA Airways |
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