What is the difference between the most popular and the most frequent airline at Kos?

Delta operates the most flights from the United States to Kos at 0 per week, while SWISS is the airline most often selected by KAYAK users searching for flights from the United States to Kos. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

Which city has the cheapest flights to Kos?

Based on fares booked in the past 5 days, the cheapest flights to Kos are from Washington, D.C., starting at $965 round-trip, and from New York, starting at $1,115 round-trip.

How do I know if a flight to Kos is a good deal?

A good deal on a flight to Kos is around $1,014 round-trip. This fare is in the lowest 25% of round-trip prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

What is the cheapest flight to Kos?

Washington, D.C. Dulles Intl Airport to Kos is the cheapest route at $965 round-trip, found in the past 5 days on KAYAK. Newark Airport to Kos is the most popular connection with round-trip deals from $1,115.

How much is a flight to Kos?

On average, a round-trip flight from the United States to Kos costs $1,207, based on KAYAK data over the past 12 months. Round-trip fares from Dallas/Fort Worth Airport average $847, while Miami runs a bit higher at $881.

What is the cheapest day to fly to Kos?

Tuesday is the cheapest day to fly to Kos at $1,083 round-trip on average over the past 12 months on KAYAK. Wednesday is the most expensive at $1,382.

What’s the cheapest month to fly to Kos?

•January is the cheapest month to fly to Kos with an average price of $591 round-trip. •May ($1,476) and June ($1,360) are the most expensive. Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Kos?

Night flights to Kos are the cheapest at $1,127 round-trip on average. Morning flights are the most expensive at $1,493.

What is a good deal for flights to Kos?

Flights under $1,014 are considered a good deal. 25% of KAYAK users found round-trip flights to Kos at or below these prices, with the lowest fares from: •Miami $831 •Dallas/Fort Worth Airport $847 •San Francisco $911.

What are the most popular airlines flying to Kos?

SWISS is the most popular airline flying to Kos among KAYAK users, followed by Lufthansa and Austrian Airlines.

$603 CHEAP FLIGHTS to Kos in 2026/27

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Cheapest round-trip

$965

Typical prices: $1,014-$1,461

Multiple Airlines

Thu 12/6Thu 12/13

IAD - KGS • 2 stops

Cheapest one-way

$603

Typical prices: $578-$814

Multiple Airlines

Sun 12/30

EWR - KGS • 2 stops

Top airlines

SWISS

Best reviews • 7.5 score

Airline reviews

Top routes

DFW - KGS

Cheapest • 35% average savings

NYC - KGS

Most popular

Insights

When to travel

January

Cheapest • 51% price drop

July

Most popular

Good to know

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We hope you love your trip to Kos!

Flight Deals

Cheap Flights to Kos

Discover the best prices for you by selecting your travel dates on KAYAK.

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One-way

Last minute

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Recent round-trip flight deals to Kos

Sun, Dec 6 - Sun, Dec 13

1:30 pm - 9:15 pmIAD Washington, D.C. Dulles Intl-KGS Kos

24h 45m2 stops Istanbul Athens Eleftherios V.

9:45 pm - 11:45 amKGS Kos-IAD Washington, D.C. Dulles Intl

45h 00m2 stops Athens Eleftherios V. Istanbul

$965Multiple Airlines

Sat, Dec 5 - Sat, Dec 12

1:30 pm - 3:45 pmIAD Washington, D.C. Dulles Intl-KGS Kos

19h 15m2 stops Istanbul Athens Eleftherios V.

12:00 pm - 11:45 amKGS Kos-IAD Washington, D.C. Dulles Intl

30h 45m2 stops Athens Eleftherios V. Istanbul

$994Multiple Airlines

Sun, Dec 6 - Sun, Dec 13

10:30 pm - 7:45 amIAD Washington, D.C. Dulles Intl-KGS Kos

26h 15m3 stops Lisbon Humberto Delgado Milan Malpensa Athens Eleftherios V.

12:00 pm - 3:15 pmKGS Kos-IAD Washington, D.C. Dulles Intl

34h 15m3 stops Athens Eleftherios V. Milan Malpensa Lisbon Humberto Delgado

$1,077Multiple Airlines

Sun, Dec 6 - Thu, Dec 10

11:45 pm - 8:05 pmEWR Newark-KGS Kos

13h 20m1 stop Athens Eleftherios V.

8:25 am - 9:10 pmKGS Kos-EWR Newark

19h 45m1 stop Athens Eleftherios V.

$1,115Aegean Airlines

Sat, Dec 5 - Sat, Dec 12

5:25 pm - 7:45 amIAD Washington, D.C. Dulles Intl-KGS Kos

31h 20m3 stops Lisbon Humberto Delgado London Heathrow Athens Eleftherios V.

5:15 pm - 8:35 pmKGS Kos-IAD Washington, D.C. Dulles Intl

34h 20m3 stops Athens Eleftherios V. London Heathrow Lisbon Humberto Delgado

$1,133Multiple Airlines

Wed, Apr 7 - Wed, Apr 21

8:40 am - 5:35 pmSFO San Francisco-KGS Kos

22h 55m2 stops Toronto Pearson Intl Athens Eleftherios V.

11:40 am - 2:35 pmKGS Kos-SFO San Francisco

36h 55m3 stops Basel EuroAirport Swiss Barcelona-El Prat Lisbon Humberto Delgado

$1,166Multiple Airlines

Wed, Apr 7 - Wed, Apr 21

9:00 am - 12:35 amSFO San Francisco-KGS Kos

29h 35m3 stops Vancouver Intl Munich Franz Josef Strauss Athens Eleftherios V.

11:40 am - 2:35 pmKGS Kos-SFO San Francisco

36h 55m3 stops Basel EuroAirport Swiss Barcelona-El Prat Lisbon Humberto Delgado

$1,166Multiple Airlines

Sun, Dec 6 - Sun, Dec 13

1:30 pm - 9:15 pmIAD Washington, D.C. Dulles Intl-KGS Kos

24h 45m2 stops Istanbul Athens Eleftherios V.

12:00 pm - 3:15 pmKGS Kos-IAD Washington, D.C. Dulles Intl

34h 15m3 stops Athens Eleftherios V. Rome Fiumicino Lisbon Humberto Delgado

$1,168Multiple Airlines

Sat, Dec 5 - Sat, Dec 12

1:30 pm - 3:45 pmIAD Washington, D.C. Dulles Intl-KGS Kos

19h 15m2 stops Istanbul Athens Eleftherios V.

5:25 pm - 7:25 pmKGS Kos-IAD Washington, D.C. Dulles Intl

33h 00m3 stops Rhodes Diagoras Athens Eleftherios V. Istanbul

$1,172Multiple Airlines

Mon, Nov 2 - Mon, Nov 30

11:45 pm - 8:05 pmEWR Newark-KGS Kos

13h 20m1 stop Athens Eleftherios V.

5:15 pm - 9:10 pmKGS Kos-EWR Newark

34h 55m1 stop Athens Eleftherios V.

$1,199Aegean Airlines

Recent last minute flight deals to Kos

Mon, Oct 26 - Sun, Nov 1

10:00 pm - 9:50 amJFK New York John F Kennedy Intl-KGS Kos

29h 50m1 stop Zurich

11:00 am - 1:15 pmKGS Kos-JFK New York John F Kennedy Intl

33h 15m1 stop Zurich

$933SWISS

Mon, Oct 26 - Sun, Nov 1

11:00 pm - 9:50 amEWR Newark-KGS Kos

28h 50m1 stop Zurich

11:00 am - 8:30 pmKGS Kos-EWR Newark

16h 30m1 stop Zurich

$957SWISS

Mon, Oct 26 - Sun, Nov 1

10:00 pm - 9:50 amJFK New York John F Kennedy Intl-KGS Kos

29h 50m1 stop Zurich

11:00 am - 1:15 pmKGS Kos-JFK New York John F Kennedy Intl

33h 15m1 stop Zurich

$957SWISS

Mon, Oct 26 - Sun, Nov 1

11:00 pm - 9:50 amEWR Newark-KGS Kos

28h 50m1 stop Zurich

11:00 am - 8:30 pmKGS Kos-EWR Newark

16h 30m1 stop Zurich

$966SWISS

Mon, Oct 26 - Sun, Nov 1

8:35 pm - 9:50 amJFK New York John F Kennedy Intl-KGS Kos

31h 15m2 stops Geneva Geneve-Cointrin Zurich

11:00 am - 1:15 pmKGS Kos-JFK New York John F Kennedy Intl

33h 15m1 stop Zurich

$971SWISS

Tue, Oct 27 - Wed, Nov 4

1:22 pm - 7:00 pmMIA Miami-KGS Kos

23h 38m2 stops Newark Munich Franz Josef Strauss

2:20 pm - 2:35 pmKGS Kos-MIA Miami

31h 15m2 stops Rhodes Diagoras Zurich

$1,040Multiple Airlines

Tue, Oct 27 - Wed, Nov 4

7:45 pm - 7:00 pmMIA Miami-KGS Kos

17h 15m1 stop Munich Franz Josef Strauss

2:20 pm - 2:35 pmKGS Kos-MIA Miami

31h 15m2 stops Rhodes Diagoras Zurich

$1,041Multiple Airlines

Tue, Oct 27 - Wed, Nov 4

7:45 pm - 7:00 pmMIA Miami-KGS Kos

17h 15m1 stop Munich Franz Josef Strauss

2:20 pm - 2:35 pmKGS Kos-MIA Miami

31h 15m2 stops Rhodes Diagoras Zurich

$1,042Multiple Airlines

Tue, Oct 27 - Wed, Nov 4

5:40 pm - 5:40 pmMIA Miami-KGS Kos

18h 00m1 stop Frankfurt am Main

2:20 pm - 2:35 pmKGS Kos-MIA Miami

31h 15m1 stop Zurich

$1,057Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

10:40 pm - 11:45 amSFO San Francisco-KGS Kos

28h 05m1 stop Munich Franz Josef Strauss

8:30 pm - 8:35 pmKGS Kos-SFO San Francisco

33h 05m1 stop Munich Franz Josef Strauss

$1,512Lufthansa

All round-trip flight deals to Kos

Sun, Dec 6 - Sun, Dec 13

1:30 pm - 9:15 pmIAD Washington, D.C. Dulles Intl-KGS Kos

24h 45m2 stops Istanbul Athens Eleftherios V.

9:45 pm - 11:45 amKGS Kos-IAD Washington, D.C. Dulles Intl

45h 00m2 stops Athens Eleftherios V. Istanbul

$965Multiple Airlines

Sat, Dec 5 - Sat, Dec 12

1:30 pm - 3:45 pmIAD Washington, D.C. Dulles Intl-KGS Kos

19h 15m2 stops Istanbul Athens Eleftherios V.

12:00 pm - 11:45 amKGS Kos-IAD Washington, D.C. Dulles Intl

30h 45m2 stops Athens Eleftherios V. Istanbul

$994Multiple Airlines

Sun, Dec 6 - Sun, Dec 13

10:30 pm - 7:45 amIAD Washington, D.C. Dulles Intl-KGS Kos

26h 15m3 stops Lisbon Humberto Delgado Milan Malpensa Athens Eleftherios V.

12:00 pm - 3:15 pmKGS Kos-IAD Washington, D.C. Dulles Intl

34h 15m3 stops Athens Eleftherios V. Milan Malpensa Lisbon Humberto Delgado

$1,077Multiple Airlines

Sun, Dec 6 - Thu, Dec 10

11:45 pm - 8:05 pmEWR Newark-KGS Kos

13h 20m1 stop Athens Eleftherios V.

8:25 am - 9:10 pmKGS Kos-EWR Newark

19h 45m1 stop Athens Eleftherios V.

$1,115Aegean Airlines

Sat, Dec 5 - Sat, Dec 12

5:25 pm - 7:45 amIAD Washington, D.C. Dulles Intl-KGS Kos

31h 20m3 stops Lisbon Humberto Delgado London Heathrow Athens Eleftherios V.

5:15 pm - 8:35 pmKGS Kos-IAD Washington, D.C. Dulles Intl

34h 20m3 stops Athens Eleftherios V. London Heathrow Lisbon Humberto Delgado

$1,133Multiple Airlines

Wed, Apr 7 - Wed, Apr 21

8:40 am - 5:35 pmSFO San Francisco-KGS Kos

22h 55m2 stops Toronto Pearson Intl Athens Eleftherios V.

11:40 am - 2:35 pmKGS Kos-SFO San Francisco

36h 55m3 stops Basel EuroAirport Swiss Barcelona-El Prat Lisbon Humberto Delgado

$1,166Multiple Airlines

Wed, Apr 7 - Wed, Apr 21

9:00 am - 12:35 amSFO San Francisco-KGS Kos

29h 35m3 stops Vancouver Intl Munich Franz Josef Strauss Athens Eleftherios V.

11:40 am - 2:35 pmKGS Kos-SFO San Francisco

36h 55m3 stops Basel EuroAirport Swiss Barcelona-El Prat Lisbon Humberto Delgado

$1,166Multiple Airlines

Sun, Dec 6 - Sun, Dec 13

1:30 pm - 9:15 pmIAD Washington, D.C. Dulles Intl-KGS Kos

24h 45m2 stops Istanbul Athens Eleftherios V.

12:00 pm - 3:15 pmKGS Kos-IAD Washington, D.C. Dulles Intl

34h 15m3 stops Athens Eleftherios V. Rome Fiumicino Lisbon Humberto Delgado

$1,168Multiple Airlines

Sat, Dec 5 - Sat, Dec 12

1:30 pm - 3:45 pmIAD Washington, D.C. Dulles Intl-KGS Kos

19h 15m2 stops Istanbul Athens Eleftherios V.

5:25 pm - 7:25 pmKGS Kos-IAD Washington, D.C. Dulles Intl

33h 00m3 stops Rhodes Diagoras Athens Eleftherios V. Istanbul

$1,172Multiple Airlines

Mon, Nov 2 - Mon, Nov 30

11:45 pm - 8:05 pmEWR Newark-KGS Kos

13h 20m1 stop Athens Eleftherios V.

5:15 pm - 9:10 pmKGS Kos-EWR Newark

34h 55m1 stop Athens Eleftherios V.

$1,199Aegean Airlines

Booking Insights

Price, demand and travel trends for flights to Kos

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

What is the cheapest flight to Kos?: Washington, D.C. Dulles Intl Airport to Kos is the cheapest route at $965 round-trip, found in the past 5 days on KAYAK. Newark Airport to Kos is the most popular connection with round-trip deals from $1,115.
How much is a flight to Kos? Average and cheapest price for all round-trip flights to Kos from each origin found by users searching on KAYAK in the last 12 months.: On average, a round-trip flight from the United States to Kos costs $1,207, based on KAYAK data over the past 12 months. Round-trip fares from Dallas/Fort Worth Airport average $847, while Miami runs a bit higher at $881.
What is the cheapest day to fly to Kos?: Tuesday is the cheapest day to fly to Kos at $1,083 round-trip on average over the past 12 months on KAYAK. Wednesday is the most expensive at $1,382.
What’s the cheapest month to fly to Kos? To calculate monthly average prices, KAYAK takes all prices for each month over the last 12 months for flights to Kos, removes the top 0.1% to account for outliers, then takes the median of all values for each month.: •January is the cheapest month to fly to Kos with an average price of $591 round-trip.
•May ($1,476) and June ($1,360) are the most expensive.

Based on KAYAK data over the past 12 months.
What is the cheapest time of day to fly to Kos? Average price for all round-trip flights depending on time of departure, seen by users on KAYAK in the last 12 months.: Night flights to Kos are the cheapest at $1,127 round-trip on average. Morning flights are the most expensive at $1,493.
What is a good deal for flights to Kos?: Flights under $1,014 are considered a good deal. 25% of KAYAK users found round-trip flights to Kos at or below these prices, with the lowest fares from:
•Miami $831
•Dallas/Fort Worth Airport $847
•San Francisco $911.

Find deals

Expert advice

Our travel experts

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Emily Zemler

Expert on SWISS

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Low season	February
High season	July
Cheapest flight	$603

Beat the crowds with an average 95% drop in travelers.

The most popular month to fly with an average 246% increase in travelers.

One-way flight from Newark Airport to Kos

When to book flights to Kos

Are your dates flexible? Find out the best times to travel to Kos based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. The information is for flights to Kos based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

How do I know if a flight to Kos is a good deal?
A good deal on a flight to Kos is around $1,014 round-trip. This fare is in the lowest 25% of round-trip prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.
Which city has the cheapest flights to Kos?
Based on fares booked in the past 5 days, the cheapest flights to Kos are from Washington, D.C., starting at $965 round-trip, and from New York, starting at $1,115 round-trip.
What is the difference between the most popular and the most frequent airline at Kos?
Delta operates the most flights from the United States to Kos at 0 per week, while SWISS is the airline most often selected by KAYAK users searching for flights from the United States to Kos. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

For flights to Kos, a good round-trip fare is around $1,014. If you find a fare below that, you're getting a strong deal.
If your travel dates are flexible, consider flying to Kos in January. Round-trip fares historically average $591, making January the cheapest month to travel based on KAYAK data from the last 12 months.
Before you book:

• Check the route's typical price range so you can spot a deal.
• Confirm baggage fees and seat-selection costs on budget carriers.
• Verify whether you need any travel documents beyond ID.
• Pick a departure airport, since your nearest may not be the cheapest origin.
Shift your departure to evening to save up to $366 per round-trip. Evening flights to Kos average $1,127 compared to $1,493 for morning flights.

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Everything you should know

Cheap Flights to Kos

Recent round-trip flight deals to Kos

Recent one-way flight deals to Kos

Recent last minute flight deals to Kos

All round-trip flight deals to Kos

Price, demand and travel trends for flights to Kos

What is the cheapest flight to Kos?

How much is a flight to Kos?

What is the cheapest day to fly to Kos?

What’s the cheapest month to fly to Kos?

What is the cheapest time of day to fly to Kos?

What is a good deal for flights to Kos?

What are the most popular airlines flying to Kos?

Expert advice for your flight to Kos

Key details for flights to Kos

Low season

High season

Cheapest flight

When to book flights to Kos

Your questions about flights to Kos, answered

Your guide to booking Kos flights

Traveling to a place near Kos?

More options for your flight to Kos

Complete your trip to Kos with a hotel stay or car rental

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