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Cheap flights from the United States to Kos from $790

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Kos departing on 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United States to Kos

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

Enter your travel dates to find the best prices.
SWISS Logo
9:45 pm - 3:10 pm
EWR
-
KGS
34h 25m
1 stop
SWISS Logo
11:00 am - 8:15 pm
KGS
-
EWR
16h 15m
1 stop
$790SWISS
Wed, Aug 19 - Thu, Sep 10
SWISS Logo
9:45 pm - 3:10 pm
EWR
-
KGS
34h 25m
1 stop
SWISS Logo
8:30 pm - 8:15 pm
KGS
-
EWR
30h 45m
1 stop
$806SWISS
Wed, Aug 19 - Tue, Sep 8
Multiple Airlines Logo
9:30 pm - 7:05 pm
EWR
-
KGS
38h 35m
2 stops
Multiple Airlines Logo
8:30 pm - 8:15 pm
KGS
-
EWR
30h 45m
1 stop
$838Multiple Airlines
Mon, Aug 24 - Tue, Sep 1
Multiple Airlines Logo
9:15 pm - 8:15 pm
BOS
-
KGS
16h 00m
1 stop
Multiple Airlines Logo
10:25 pm - 7:15 pm
KGS
-
BOS
27h 50m
2 stops
$846Multiple Airlines
Sat, Aug 22 - Fri, Aug 28
Austrian Airlines Logo
2:28 pm - 8:50 pm
BOS
-
KGS
23h 22m
2 stops
Austrian Airlines Logo
9:40 pm - 1:50 pm
KGS
-
BOS
23h 10m
1 stop
$875Austrian Airlines
Tue, Aug 25 - Wed, Sep 2
Austrian Airlines Logo
5:40 pm - 8:50 pm
EWR
-
KGS
20h 10m
1 stop
Austrian Airlines Logo
9:10 pm - 1:55 pm
KGS
-
EWR
23h 45m
1 stop
$888Austrian Airlines
Thu, Aug 20 - Thu, Sep 10
Brussels Airlines Logo
6:10 pm - 10:25 am
JFK
-
KGS
33h 15m
1 stop
Brussels Airlines Logo
11:25 am - 1:00 pm
KGS
-
JFK
32h 35m
1 stop
$921Brussels Airlines
Sat, Aug 22 - Wed, Sep 9
Brussels Airlines Logo
6:10 pm - 10:30 am
JFK
-
KGS
33h 20m
1 stop
Brussels Airlines Logo
11:25 am - 1:00 pm
KGS
-
JFK
32h 35m
1 stop
$931Brussels Airlines
Sun, Aug 23 - Sun, Sep 6
Lufthansa Logo
5:30 pm - 7:45 pm
JFK
-
KGS
19h 15m
1 stop
Lufthansa Logo
12:40 pm - 8:05 pm
KGS
-
JFK
38h 25m
2 stops
$940Lufthansa
Fri, Aug 21 - Mon, Sep 7
Lufthansa Logo
3:35 pm - 11:45 am
ORD
-
KGS
12h 10m
1 stop
Lufthansa Logo
8:35 pm - 12:55 pm
KGS
-
ORD
24h 20m
2 stops
$1,145Lufthansa
Sun, Sep 13 - Sat, Oct 3

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Lufthansa flights from United States to Kos

Our best Lufthansa deals on United States to Kos flight tickets
Lufthansa
Aug 24
BOS7:23 pmBoston Logan Intl
34h 17m
2 stops
KGS12:40 pmKos
Sep 2
KGS1:30 pmKos
13h 40m
1 stop
BOS8:10 pmBoston Logan Intl
$914
Lufthansa
Aug 31
EWR8:30 pmNewark
33h 10m
2 stops
KGS12:40 pmKos
Sep 9
KGS7:55 pmKos
26h 50m
2 stops
EWR3:45 pmNewark
$922
Lufthansa
Aug 21
JFK5:30 pmNew York John F Kennedy Intl
19h 15m
1 stop
KGS7:45 pmKos
Sep 7
KGS12:40 pmKos
38h 25m
2 stops
JFK8:05 pmNew York John F Kennedy Intl
$940

British Airways flights from United States to Kos

Our best British Airways deals on United States to Kos flight tickets
British Airways
Aug 23
JFK8:20 pmNew York John F Kennedy Intl
17h 25m
1 stop
KGS8:45 pmKos
Sep 7
KGS9:45 pmKos
20h 25m
1 stop
JFK11:10 amNew York John F Kennedy Intl
$1,016
British Airways
Aug 20
LGA9:10 pmNew York LaGuardia
33h 05m
2 stops
KGS1:15 pmKos
Sep 9
KGS9:45 pmKos
26h 46m
2 stops
LGA5:31 pmNew York LaGuardia
$1,158
British Airways
Sep 2
LGA5:59 pmNew York LaGuardia
19h 51m
2 stops
KGS8:50 pmKos
Sep 8
KGS2:20 pmKos
23h 56m
2 stops
LGA7:16 amNew York LaGuardia
$1,176

momondo Fare Finder

 
Customize your flight search to find flights from United States 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, momondo users made 832,500 searches. Data last updated July 8, 2026.
Use the filters below to find and compare flights from the United States to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

NewarkKos

EWR - KGS

EWRKGS

Newark

Wed 8/19

9:45 pm-3:10 pm

1 stop34h 25m

Kos

Thu 9/10

11:00 am-8:15 pm

1 stop16h 15m

$790

NewarkKos

EWR - KGS

EWRKGS

Newark

Wed 8/19

9:45 pm-3:10 pm

1 stop34h 25m

Kos

Tue 9/8

8:30 pm-8:15 pm

1 stop30h 45m

$806

NewarkKos

EWR - KGS

EWRKGS

Newark

Mon 8/24

9:30 pm-7:05 pm

2 stops38h 35m

Kos

Tue 9/1

8:30 pm-8:15 pm

1 stop30h 45m

$838

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sat 8/22

9:15 pm-8:15 pm

1 stop16h 00m

Kos

Fri 8/28

10:25 pm-7:15 pm

2 stops27h 50m

$846

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Tue 8/25

2:28 pm-8:50 pm

2 stops23h 22m

Kos

Wed 9/2

9:40 pm-1:50 pm

1 stop23h 10m

$875

NewarkKos

EWR - KGS

EWRKGS

Newark

Thu 8/20

5:40 pm-8:50 pm

1 stop20h 10m

Kos

Thu 9/10

9:10 pm-1:55 pm

1 stop23h 45m

$888

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Sat 8/22

6:10 pm-10:25 am

1 stop33h 15m

Kos

Wed 9/9

11:25 am-1:00 pm

1 stop32h 35m

$921

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Sun 8/23

6:10 pm-10:30 am

1 stop33h 20m

Kos

Sun 9/6

11:25 am-1:00 pm

1 stop32h 35m

$931

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Fri 8/21

5:30 pm-7:45 pm

1 stop19h 15m

Kos

Mon 9/7

12:40 pm-8:05 pm

2 stops38h 25m

$940
Quickest round-trip

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sun 9/13

3:35 pm-11:45 am

1 stop12h 10m

Kos

Sat 10/3

8:35 pm-12:55 pm

2 stops24h 20m

$1,145

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Kos from

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

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

You could potentially save up to 22% 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

Fastest flight time

11h 40m

Direct flights

None
The fastest flight from United States to Kos takes 11h 40m
There are no direct flights from United States to Kos. There are no popular flight routes from United States to Kos.
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Frequently asked questions about flying from the United States to Kos

  • 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?

  • 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
SWISSPriceFrom $496Free CancellationRating
7.5
1,992 reviews
Search SWISS flights
LufthansaPriceFrom $626Free CancellationRating
6.8
8,125 reviews
Search Lufthansa flights

Traveling to a place near Kos?

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

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.

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