How long does it take to fly to Kos?

On average, it takes 16h to fly from United States to Kos if you fly out of New York (the most popular airport in United States) and into Kos (the most popular airport in Kos). If you’re flying out of Boston and into Kos, then the flight time is around 18h 40m.

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 November 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.

$621 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

Last minute

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

Enter your travel dates to find the best prices.

12:00 pm - 11:50 pmORD-KGS

27h 50m3 stops

12:45 am - 2:00 pmKGS-ORD

21h 15m2 stops

$1,082Multiple Airlines

Find Deal

Sat, May 2 - Sun, May 10

12:00 pm - 11:50 pmORD-KGS

27h 50m3 stops

7:55 pm - 7:00 pmKGS-ORD

31h 05m2 stops

$1,089Multiple Airlines

Find Deal

Sat, May 2 - Mon, May 11

6:40 pm - 3:45 pmORD-KGS

37h 05m2 stops

11:00 am - 12:20 pmKGS-ORD

33h 20m1 stop

$1,128Multiple Airlines

Find Deal

Sat, May 2 - Mon, May 11

7:15 pm - 9:55 pmORD-KGS

18h 40m2 stops

12:45 am - 2:00 pmKGS-ORD

21h 15m2 stops

$1,136Multiple Airlines

Find Deal

Sat, May 2 - Sun, May 10

9:20 pm - 7:55 pmORD-KGS

38h 35m2 stops

7:30 pm - 3:55 pmKGS-ORD

28h 25m2 stops

$1,335SWISS

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

$1,335Aegean Airlines

Find Deal

Wed, Apr 1 - Sun, Apr 5

9:20 pm - 7:55 pmORD-KGS

38h 35m2 stops

7:30 pm - 12:00 pmKGS-ORD

24h 30m3 stops

$1,354SWISS

Find Deal

Thu, Apr 2 - Mon, Apr 6

8:55 pm - 5:35 pmMCO-KGS

37h 40m2 stops

1:05 pm - 10:25 amKGS-MCO

28h 20m2 stops

$1,792Emirates

Find Deal

Wed, Apr 1 - Sun, Apr 5

5:15 pm - 5:35 pmSEA-KGS

38h 20m2 stops

1:05 pm - 1:25 pmKGS-SEA

34h 20m2 stops

$1,817Emirates

Find Deal

Wed, Apr 1 - Sun, Apr 5

11:45 pm - 8:05 pmEWR-KGS

13h 20m1 stop

12:35 pm - 9:10 pmKGS-EWR

15h 35m1 stop

$1,911Aegean Airlines

Find Deal

Wed, Dec 10 - Wed, Dec 17

SWISS flights from United States to Kos

Our best SWISS deals on United States to Kos flight tickets

SWISS

Apr 2

ORD9:20 pmChicago O'Hare Intl

38h 35m

2 stops

KGS7:55 pmKos

Apr 6

KGS7:30 pmKos

28h 25m

2 stops

ORD3:55 pmChicago O'Hare Intl

$1,335

Find similar

SWISS

Apr 2

ORD9:20 pmChicago O'Hare Intl

38h 35m

2 stops

KGS7:55 pmKos

Apr 6

KGS7:30 pmKos

24h 30m

3 stops

ORD12:00 pmChicago O'Hare Intl

$1,354

Find similar

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

$1,384

Find similar

Aegean Airlines flights from United States to Kos

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

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

$1,335

Find similar

Aegean Airlines

Dec 10

EWR11:45 pmNewark

13h 20m

1 stop

KGS8:05 pmKos

Dec 17

KGS12:35 pmKos

15h 35m

1 stop

EWR9:10 pmNewark

$1,911

Find similar

Aegean Airlines

Dec 10

EWR11:45 pmNewark

13h 20m

1 stop

KGS8:05 pmKos

Dec 17

KGS12:35 pmKos

15h 35m

1 stop

EWR9:10 pmNewark

$3,891

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sat 5/2

12:00 pm-11:50 pm

3 stops27h 50m

Kos

Sun 5/10

12:45 am-2:00 pm

2 stops21h 15m

$1,082

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sat 5/2

12:00 pm-11:50 pm

3 stops27h 50m

Kos

Mon 5/11

7:55 pm-7:00 pm

2 stops31h 05m

$1,089

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sat 5/2

6:40 pm-3:45 pm

2 stops37h 05m

Kos

Mon 5/11

11:00 am-12:20 pm

1 stop33h 20m

$1,128

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sat 5/2

7:15 pm-9:55 pm

2 stops18h 40m

Kos

Sun 5/10

12:45 am-2:00 pm

2 stops21h 15m

$1,136

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Thu 4/2

9:20 pm-7:55 pm

2 stops38h 35m

Kos

Mon 4/6

7:30 pm-3:55 pm

2 stops28h 25m

$1,335

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

$1,335

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Thu 4/2

9:20 pm-7:55 pm

2 stops38h 35m

Kos

Mon 4/6

7:30 pm-12:00 pm

3 stops24h 30m

$1,354

OrlandoKos

MCO - KGS

MCOKGS

Orlando

Wed 4/1

8:55 pm-5:35 pm

2 stops37h 40m

Kos

Sun 4/5

1:05 pm-10:25 am

2 stops28h 20m

$1,792

SeattleKos

SEA - KGS

SEAKGS

Seattle/Tacoma Intl

Wed 4/1

5:15 pm-5:35 pm

2 stops38h 20m

Kos

Sun 4/5

1:05 pm-1:25 pm

2 stops34h 20m

$1,817

NewarkKos

EWR - KGS

EWRKGS

Newark

Wed 12/10

11:45 pm-8:05 pm

1 stop13h 20m

Kos

Wed 12/17

12:35 pm-9:10 pm

1 stop15h 35m

$1,911

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted 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 November 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 1,784 reviews	Search SWISS flights
Lufthansa	PriceFrom $602	Free Cancellation	Rating 6.8 7,570 reviews	Search Lufthansa flights
British Airways	PriceFrom $730	Free Cancellation	Rating 6.7 7,513 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.