How long does it take to fly to Kos?

On average, it takes 14h 55m to fly from United States to Kos if you fly out of Boston (the most popular airport in United States) and into Kos (the most popular airport in Kos). If you’re flying out of New York and into Kos, then the flight time is around 16h 05m.

What airlines fly to Kos?

Lufthansa, SWISS and British Airways are the top three most popular airlines that fly to Kos from United States according to our data. Lufthansa is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Kos. Keep in mind that there are 3 different airlines that fly to Kos on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from United States to Kos Airport?

Prices for flights from United States to Kos Airport are refreshed on a daily basis.

How many operators does momondo search for flights from United States to Kos Airport?

As of October 2025, there are 3 operators available to choose from for flights from United States to Kos Airport.

How old do you have to be to fly from United States to Kos Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Kos Airport.

What documentation or ID do you need to fly to Kos Airport?

The travel and health documents required for your trip to Kos Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kos Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$661 Cheap Flights from the United States to Kos in 2025/26

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Find the cheapest flights from the United States to Kos

Round-trip

One-way

Recent round-trip flight deals from the United States to Kos

Enter your travel dates to find the best prices.

6:25 pm - 8:35 pmJFK-KGS

19h 10m2 stops

8:35 pm - 4:40 pmKGS-JFK

27h 05m2 stops

$738Multiple Airlines

Find Deal

Thu, Dec 11 - Thu, Dec 18

8:00 am - 9:15 pmMIA-KGS

30h 15m3 stops

12:00 pm - 2:40 pmKGS-MIA

33h 40m2 stops

$755Multiple Airlines

Find Deal

Thu, Feb 12 - Thu, Feb 26

5:35 pm - 8:05 pmEWR-KGS

19h 30m2 stops

8:35 am - 7:05 pmKGS-EWR

17h 30m2 stops

$783Multiple Airlines

Find Deal

Mon, Dec 1 - Mon, Dec 8

7:35 pm - 8:05 pmJFK-KGS

17h 30m2 stops

8:35 am - 8:10 pmKGS-JFK

18h 35m2 stops

$792Multiple Airlines

Find Deal

Mon, Dec 1 - Mon, Dec 8

11:45 pm - 8:05 pmEWR-KGS

13h 20m1 stop

12:35 pm - 9:10 pmKGS-EWR

15h 35m1 stop

$1,099Aegean Airlines

Find Deal

Mon, Nov 17 - Thu, Nov 27

8:15 pm - 7:55 pmORD-KGS

39h 40m2 stops

7:30 pm - 3:55 pmKGS-ORD

28h 25m2 stops

$1,181SWISS

Find Deal

Thu, Apr 2 - Mon, Apr 6

6:00 pm - 7:55 pmORD-KGS

41h 55m2 stops

7:30 pm - 3:55 pmKGS-ORD

28h 25m2 stops

$1,272SWISS

Find Deal

Thu, Apr 2 - Mon, Apr 6

11:55 pm - 12:35 amEWR-KGS

17h 40m1 stop

6:05 pm - 9:20 pmKGS-EWR

34h 15m1 stop

$1,438Aegean Airlines

Find Deal

Wed, Apr 1 - Sun, Apr 5

11:05 pm - 5:35 pmBOS-KGS

35h 30m2 stops

1:05 pm - 2:10 pmKGS-BOS

32h 05m2 stops

$1,756Emirates

Find Deal

Sun, Mar 29 - Thu, Apr 2

3:40 pm - 5:05 pmSFO-KGS

39h 25m2 stops

12:35 pm - 12:50 pmKGS-SFO

34h 15m2 stops

$1,862Emirates

Find Deal

Fri, Dec 5 - Tue, Dec 9

SWISS flights from United States to Kos

Our best SWISS deals on United States to Kos flight tickets

SWISS

Apr 2

ORD8:15 pmChicago O'Hare Intl

39h 40m

2 stops

KGS7:55 pmKos

Apr 6

KGS7:30 pmKos

28h 25m

2 stops

ORD3:55 pmChicago O'Hare Intl

$1,181

Find similar

SWISS

Apr 2

ORD6:00 pmChicago O'Hare Intl

41h 55m

2 stops

KGS7:55 pmKos

Apr 6

KGS7:30 pmKos

28h 25m

2 stops

ORD3:55 pmChicago O'Hare Intl

$1,272

Find similar

SWISS

Apr 2

ORD6:00 pmChicago O'Hare Intl

41h 55m

2 stops

KGS7:55 pmKos

Apr 6

KGS7:30 pmKos

24h 30m

3 stops

ORD12:00 pmChicago O'Hare Intl

$1,497

Find similar

Aegean Airlines flights from United States to Kos

Our best Aegean Airlines deals on United States to Kos flight tickets

Aegean Airlines

Nov 17

EWR11:45 pmNewark

13h 20m

1 stop

KGS8:05 pmKos

Nov 27

KGS12:35 pmKos

15h 35m

1 stop

EWR9:10 pmNewark

$1,099

Find similar

Aegean Airlines

Apr 1

EWR11:55 pmNewark

17h 40m

1 stop

KGS12:35 amKos

Apr 5

KGS6:05 pmKos

34h 15m

1 stop

EWR9:20 pmNewark

$1,438

Find similar

Aegean Airlines

Apr 1

EWR11:55 pmNewark

29h 40m

1 stop

KGS12:35 pmKos

Apr 5

KGS6:05 pmKos

34h 15m

1 stop

EWR9:20 pmNewark

$1,439

Find similar

Fly from

Fly to

Route

Depart

Return

Price

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Thu 12/11

6:25 pm-8:35 pm

2 stops19h 10m

Kos

Thu 12/18

8:35 pm-4:40 pm

2 stops27h 05m

$738

MiamiKos

MIA - KGS

MIAKGS

Miami

Thu 2/12

8:00 am-9:15 pm

3 stops30h 15m

Kos

Thu 2/26

12:00 pm-2:40 pm

2 stops33h 40m

$755

NewarkKos

EWR - KGS

EWRKGS

Newark

Mon 12/1

5:35 pm-8:05 pm

2 stops19h 30m

Kos

Mon 12/8

8:35 am-7:05 pm

2 stops17h 30m

$783

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Mon 12/1

7:35 pm-8:05 pm

2 stops17h 30m

Kos

Mon 12/8

8:35 am-8:10 pm

2 stops18h 35m

$792

NewarkKos

EWR - KGS

EWRKGS

Newark

Mon 11/17

11:45 pm-8:05 pm

1 stop13h 20m

Kos

Thu 11/27

12:35 pm-9:10 pm

1 stop15h 35m

$1,099

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Thu 4/2

8:15 pm-7:55 pm

2 stops39h 40m

Kos

Mon 4/6

7:30 pm-3:55 pm

2 stops28h 25m

$1,181

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Thu 4/2

6:00 pm-7:55 pm

2 stops41h 55m

Kos

Mon 4/6

7:30 pm-3:55 pm

2 stops28h 25m

$1,272

NewarkKos

EWR - KGS

EWRKGS

Newark

Wed 4/1

11:55 pm-12:35 am

1 stop17h 40m

Kos

Sun 4/5

6:05 pm-9:20 pm

1 stop34h 15m

$1,438

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sun 3/29

11:05 pm-5:35 pm

2 stops35h 30m

Kos

Thu 4/2

1:05 pm-2:10 pm

2 stops32h 05m

$1,756

San FranciscoKos

SFO - KGS

SFOKGS

San Francisco

Fri 12/5

3:40 pm-5:05 pm

2 stops39h 25m

Kos

Tue 12/9

12:35 pm-12:50 pm

2 stops34h 15m

$1,862

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from United States 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

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Kos?

The cheapest day to depart from United States to Kos is on a Sunday when prices can be found for as low as $976. On the other hand, Saturday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,196.

What is the cheapest time of day to depart on your flight to Kos?

Flying to Kos from United States in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,047 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 $1,072 on average. Flights to Kos from United States in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on United States to Kos flights?

You could potentially save up to 30% on your flight if you consider stops on a United States to Kos flight.

Cheap United States to Kos flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Kos

Direct flights	None

There are no direct flights from United States to Kos. There are no popular flight routes from United States to Kos.

Search flight deals

When did momondo last update prices for flights from United States to Kos Airport?
Prices for flights from United States to Kos Airport are refreshed on a daily basis.
How many operators does momondo search for flights from United States to Kos Airport?
As of October 2025, there are 3 operators available to choose from for flights from United States to Kos Airport.
How old do you have to be to fly from United States to Kos Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Kos Airport.
What documentation or ID do you need to fly to Kos Airport?
The travel and health documents required for your trip to Kos Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kos Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from United States to Kos

Compare and see reviews for airlines that fly from United States to Kos with momondo

Airline	Rating	Free Cancellation	Price
SWISS	PriceFrom $501	Free Cancellation	Rating 7.5 1,774 reviews	Search SWISS flights
Lufthansa	PriceFrom $602	Free Cancellation	Rating 6.8 7,539 reviews	Search Lufthansa flights
British Airways	PriceFrom $730	Free Cancellation	Rating 6.7 7,485 reviews	Search British Airways flights

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Why use momondo?

Why should I use momondo to find a flight deal from United States to Kos?

Finding the right flight to Kos from United States is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kos quick and easy, saving you time and money.

Can I find flights from United States to Kos with flexible booking policies on momondo?

Yes. All flights to Kos from United States on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from United States to Kos?

momondo provides multiple filters to help you find the best flight to Kos from United States. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from United States to Kos right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Kos from United States. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.