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$1,129+ Cheap flights from Dulles Intl (IAD) to Kos (KGS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — KGS
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheap flight deals from Dulles Intl to Kos

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Kos (KGS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,305
(Mytrip)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Kos flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Kos flights.
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From Washington, D.C. Dulles Intl to Kos
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Find flight deals from Dulles Intl to Kos

Cheapest flights from Dulles Intl to Kos
Explore the most affordable flight options available from Dulles Intl to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.

This Gurufare deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/188:45 pmIAD - KGS
1 stop15h 55mSWISS
Mon 8/2511:00 amKGS - IAD
1 stop36h 15mSWISS
Deal found 4/14$1,129
This FlightHub deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1912:35 pmIAD - KGS
2 stops17h 05mMultiple Airlines
Mon 8/2511:00 amKGS - IAD
1 stop36h 15mMultiple Airlines
Deal found 4/14$1,161
This Austrian Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/185:13 pmIAD - KGS
2 stops44h 37mAustrian Airlines
Mon 8/258:50 pmKGS - IAD
1 stop24h 45mAustrian Airlines
Deal found 4/13$1,177
This Lufthansa deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:10 pmIAD - KGS
2 stops18h 55mLufthansa
Mon 8/2512:40 pmKGS - IAD
2 stops31h 50mLufthansa
Deal found 4/14$1,197

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated April 15, 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

Dulles Intl

Fly to

Kos

Route

Depart

Return

Price

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Mon 8/18

8:45 pm-7:40 pm

1 stop15h 55m

Kos

Mon 8/25

11:00 am-4:15 pm

1 stop36h 15m

$1,129

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Tue 8/19

12:35 pm-12:40 pm

2 stops17h 05m

Kos

Mon 8/25

11:00 am-4:15 pm

1 stop36h 15m

$1,161

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Mon 8/18

5:13 pm-8:50 pm

2 stops44h 37m

Kos

Mon 8/25

8:50 pm-2:35 pm

1 stop24h 45m

$1,177

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Tue 8/19

5:10 pm-7:05 pm

2 stops18h 55m

Kos

Mon 8/25

12:40 pm-1:30 pm

2 stops31h 50m

$1,197

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Compare providers for flights from Dulles Intl to Kos

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Kos in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Kos flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-Kos flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Kos flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Kos flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Kos flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Kos

Rainfall in Kos by month

Plan your trip to Kos by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kos ranges from 0.1 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. July is typically the driest time to visit Kos when rainfall is around 0.1 in.

Temperature in Kos by month

Plan your trip to Kos by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kos, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated April 15, 2025.
SWISS
7.5
Good
1,578 reviews

Overall

7.5

Comfort

7.3

Crew

8.2

Food

7.0

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
SWISS
7.5
Good
1,578 reviews
SWISS
7.5
Good
1,578 reviews

Overall

7.5

Comfort

7.3

Crew

8.2

Food

7.0

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kos from Washington, D.C. Dulles Intl?

    Kos (KGS), located 12.8 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Kos. 0 airlines have flights to Kos from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Kos should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

  • Can I find deals for flights from Dulles Intl to Kos that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Kos.

  • Can I find deals for business class flights from Dulles Intl to Kos?

    Yes. Cheapflights offers flight deals from Dulles Intl to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
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