KGS

$243 Find Cheap Flights to Kos - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$608
Typical prices: $1,005-$1,459
Multiple Airlines
Wed 10/3Fri 10/12
JFK - KGS • 1 stop
Cheapest one-way
$243
Typical prices: $539-$802
Multiple Airlines
Thu 10/4
JFK - KGS • 1 stop
Top airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
When to book
in advance
Our data shows that travelers who book at least 26 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 51% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you love your trip to Kos!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights to Kos

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

Recent round-trip flight deals to Kos

Sat, Oct 3 - Mon, Oct 12
Multiple Airlines Logo
6:20 pm - 9:45 pmJFK  New York John F Kennedy Intl-KGS Kos
20h 25m1 stop London Gatwick
Multiple Airlines Logo
8:25 pm - 10:25 pmKGS  Kos-JFK New York John F Kennedy Intl
33h 00m2 stops Berlin Brandenburg Dublin
$608Multiple Airlines
Sat, Oct 3 - Wed, Oct 14
Multiple Airlines Logo
6:20 pm - 9:45 pmJFK  New York John F Kennedy Intl-KGS Kos
20h 25m1 stop London Gatwick
Multiple Airlines Logo
11:25 pm - 6:55 pmKGS  Kos-JFK New York John F Kennedy Intl
26h 30m2 stops Bergamo Orio Al Serio Madrid Barajas
$624Multiple Airlines
Sun, Oct 4 - Mon, Oct 12
Multiple Airlines Logo
6:20 pm - 9:55 pmJFK  New York John F Kennedy Intl-KGS Kos
20h 35m1 stop London Gatwick
Multiple Airlines Logo
8:55 pm - 10:25 pmKGS  Kos-JFK New York John F Kennedy Intl
32h 30m2 stops Berlin Brandenburg Dublin
$652Multiple Airlines
Sat, Oct 3 - Thu, Oct 15
Multiple Airlines Logo
6:20 pm - 9:45 pmJFK  New York John F Kennedy Intl-KGS Kos
20h 25m1 stop London Gatwick
Multiple Airlines Logo
9:55 pm - 3:55 pmKGS  Kos-JFK New York John F Kennedy Intl
25h 00m2 stops Bergamo Orio Al Serio London Stansted
$661Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
SWISS Logo
7:35 pm - 10:10 amLAX  Los Angeles-KGS Kos
28h 35m1 stop Zurich
SWISS Logo
8:30 pm - 4:30 pmKGS  Kos-LAX Los Angeles
30h 00m1 stop Zurich
$871SWISS
Tue, Sep 29 - Tue, Oct 6
SWISS Logo
11:15 am - 7:55 pmLAX  Los Angeles-KGS Kos
22h 40m2 stops Newark Zurich
SWISS Logo
8:30 pm - 4:30 pmKGS  Kos-LAX Los Angeles
30h 00m1 stop Zurich
$888SWISS
Tue, Sep 29 - Tue, Oct 6
SWISS Logo
7:00 am - 7:55 pmSEA  Seattle/Tacoma Intl-KGS Kos
26h 55m2 stops Chicago O'Hare Intl Zurich
SWISS Logo
8:30 pm - 10:56 pmKGS  Kos-SEA Seattle/Tacoma Intl
36h 26m2 stops Zurich Chicago O'Hare Intl
$918SWISS
Sat, Oct 24 - Sat, Oct 31
Lufthansa Logo
9:50 pm - 10:25 amJFK  New York John F Kennedy Intl-KGS Kos
30h 35m1 stop Frankfurt am Main
Lufthansa Logo
8:30 pm - 4:40 pmKGS  Kos-JFK New York John F Kennedy Intl
26h 10m1 stop Munich Franz Josef Strauss
$958Lufthansa
Tue, Oct 6 - Wed, Oct 14
Lufthansa Logo
9:50 pm - 7:05 pmJFK  New York John F Kennedy Intl-KGS Kos
14h 15m2 stops Frankfurt am Main Munich Franz Josef Strauss
Lufthansa Logo
7:55 pm - 8:05 pmKGS  Kos-JFK New York John F Kennedy Intl
31h 10m2 stops Munich Franz Josef Strauss Frankfurt am Main
$1,091Lufthansa
Tue, Oct 6 - Mon, Oct 12
Lufthansa Logo
3:40 pm - 7:05 pmJFK  New York John F Kennedy Intl-KGS Kos
20h 25m2 stops Frankfurt am Main Munich Franz Josef Strauss
Lufthansa Logo
9:45 am - 3:00 pmKGS  Kos-JFK New York John F Kennedy Intl
36h 15m2 stops Frankfurt am Main Munich Franz Josef Strauss
$1,093Lufthansa
Booking Insights

KAYAK's insights & trends for flights to Kos

Get data-powered insights and trends for flights to Kos to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to Kos?

Tuesday is the cheapest day to fly to Kos at $1,099 round-trip on average over the past 12 months on KAYAK. Wednesday is the most expensive at $1,358.

What is 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 ($1,391) 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 $1,146 round-trip on average. Morning flights are the most expensive at $1,452.

When are flights to Kos the cheapest?

Flights to Kos are cheapest 26 weeks before departure. Booking in this window typically costs about 30% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight to Kos

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Duncan Madden

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

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

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.

Key details for flights to Kos

Low season

February

Cheapest flight

$243
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from New York John F Kennedy Intl 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

Your questions about flights to Kos, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

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

    Condor 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.

  • Where can I fly from to get the cheapest fares to Kos?

    Based on fares booked in the past 5 days, the cheapest flights to Kos are from:
    • New York, from $608 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 $1,005 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.

  • How expensive are last-minute flights to Kos?

    Last-minute fares to Kos – booked within 2 weeks of departure – run 9% below the average round-trip fare of $1,198. Booking late can sometimes save money, but inventory is limited.

Your guide to booking Kos flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Kos, aim to book around 26 weeks before you fly. That window historically saves about 30% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to Kos, recent KAYAK data shows that stronger deals tend to land around $1,005 round-trip. If you see a fare below that threshold, it's a strong deal – book before the price climbs back up.
  • If you can choose when to go, time your trip to Kos around January. Round-trip fares historically average $591 that month – typically the cheapest month to travel based on 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 $306 per round-trip. Evening flights to Kos average $1,146 compared to $1,452 for morning flights. See the time-of-day chart above for the full breakdown.

Reviews of the top airlines flying to Kos

 
Need help choosing which airline to fly with to Kos? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
SWISSOverall score based on 2041 reviews
8.3Crew
7.4Comfort
7.7Boarding
6.8Entertainment
7.1Food
Airline reviews

Great crew, great food, horrible aircraft seat spacing for a 9 hr flight.

6.0 GoodAlex, Aug 2026
Read more SWISS reviews

Great crew, great food, horrible aircraft seat spacing for a 9 hr flight.

The food could have been better but everything else was superb.

Terrible airline both Swiss and Lufthansa that are part of the same corp. stay away if you can

The flight attendants are amazing. The plane itself was not in good shape for passenger comfort. A good share of seat reclines were broken so they went back an unlimited amount, which meant the person in front of me was fully in my lap (the crew helped me find another seat but that would not have been possible on a full flight). Moisture from the ventilation was also dripping on me. And the entertainment system is almost impossible to hear.

Didn't make the connection as my primary flight was 3 hrs late, I had to basically beg to be put on a different airline to continue my trip otherwise I would have been sitting on the airport for 8 hrs

3hr delay and then missed connecting flight with another 6hr wait at the airport before getting a continuation to my trip, worst trip ever in my 50+years of flight travel

Without a doubt, my “customer service” experience with SWISS was the worst of my life. Multiple disconnections in conversations, very cold and indifferent staff, failure to follow up with promised status updates — simply put, T. H. E. W. O. R. S. T. A full week later, and I am STILL waiting to hear from them. Never again for me with SWISS. Disgraceful.

The flight and all amenities were good to excellent. SWISS was awful to deal with. Every step of the way they nickel and dime you. Chose your seats? $14. Change your seats… No accounting for the prior payment. You get billed again. 17 pound restriction on overhead luggage, nonsense. It’s a weight in the plane whether it’s in the overhead or in check baggage. They just milk you for every cent they can and I resent it. The flight was excellent.

plenty of legspace, snacks, no pull face from flight attendants when asking for a wine. Also fast transfer ability at ZRH.

The flight itself was fine, but due to a snow delay my connection to Lisbon was delayed by six hours. Despite this, Swiss Air still managed to lose my luggage. Not acceptable. Someone else on the flight also lost their luggage.

Lufthansa has a bag policy unique to Lufthansa. We all had a small carry on and a backpack (personal item) that we carried with us through multiple other connecting flights, no problem. With Lufthansa we were charged 80 euros each for the carry on at the gate, for this one flight. When asked they said they made an announcement… problem being that we had just arrived to the gate from a connecting flight and didn’t hear an announcement. While we were standing at the counter paying the ridiculous fee several other people were stopped, while countless others boarded with the same type of luggage and were not stopped. Crazy. Good news though, when we got on the plane half of the overhead bins were empty! After an already horrible experience the lady at the counter was also terrible, so that helped round things out.

Delayed over 2 hours. Bring your own snacks or prepare to pay. No entertainment and no plug plugs for charging.

I remember flying with Lufthansa many years ago, and it used to be an amazing airline with more technologically savvy and roomy planes, but unfortunately that isn’t the case anymore. The space between the seats is much smaller, which is ok for short flights, but definitely not for across the Atlantic flights. Not sure if I’ll opt for Lufthansa the next time, maybe just if necessary.

Boarding delayed 1.5 hours. Ended up sick because of all the delays and lines waiting around airport and boarding.

They failed to make sure all luggage made it onto the flight. I had to spend a week on vacation with no clothes.

No internet for most of the flight. Very narrow seats. Food was bad. Flight was nearly an hour late with perfect weather, crew offered no explanation or compensation.

Gate agent required us to check our perfectly legal carry on bags due to a supposed lack of overhead space. After seating, we saw nothing but empty space in our seating area. This caused luggage to miss connection in Athens, and we had no bags in Mykonos. Totally avoidable and unacceptable. My last U A flight !

Enough leg room, no drinks or snacks. Looked like they were very good with the children

Would not accommodate my request to bring my my jacket I left on the plane.

Food was mediocre. In flight entertainment lacked live TV. Crew was fantastic. Plane very comfortable if a bit worn.

Traveling to a place near Kos?

Book flights to Kos if you plan to visit one of these locations
Kardamena
Marmari

Everything you need to know for your flight to Kos

Information on the airport you'll fly into in Kos