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Cheap flights from the United States to Kos from $278

This is the cheapest one-way 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 9/1. 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.
Multiple Airlines Logo
8:30 pm - 7:05 pm
EWR
-
KGS
15h 35m
1 stop
Multiple Airlines Logo
8:50 pm - 1:55 pm
KGS
-
EWR
24h 05m
1 stop
$792Multiple Airlines
Tue, Sep 15 - Mon, Oct 5
Austrian Airlines Logo
5:40 pm - 9:15 am
EWR
-
KGS
32h 35m
1 stop
Austrian Airlines Logo
8:50 pm - 2:08 pm
KGS
-
EWR
48h 18m
2 stops
$800Austrian Airlines
Sun, Aug 30 - Mon, Sep 7
SWISS Logo
9:45 pm - 3:10 pm
EWR
-
KGS
34h 25m
1 stop
SWISS Logo
8:45 pm - 8:15 pm
KGS
-
EWR
30h 30m
1 stop
$848SWISS
Wed, Sep 9 - Sat, Sep 19
Lufthansa Logo
3:05 pm - 12:40 pm
LAX
-
KGS
35h 35m
1 stop
Lufthansa Logo
12:40 pm - 4:15 pm
KGS
-
LAX
36h 35m
1 stop
$903Lufthansa
Mon, Oct 12 - Mon, Oct 26
SWISS Logo
4:15 pm - 2:30 pm
JFK
-
KGS
15h 15m
1 stop
SWISS Logo
8:45 pm - 12:50 pm
KGS
-
JFK
23h 05m
1 stop
$954SWISS
Sat, Aug 22 - Sat, Aug 29
Lufthansa Logo
3:30 pm - 8:50 am
LGA
-
KGS
34h 20m
2 stops
Lufthansa Logo
9:45 am - 7:36 pm
KGS
-
LGA
40h 51m
2 stops
$1,009Lufthansa
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
7:00 pm - 8:55 pm
TPA
-
KGS
18h 55m
1 stop
British Airways Logo
2:05 pm - 5:00 pm
KGS
-
TPA
33h 55m
1 stop
$1,182British Airways
Tue, Sep 15 - Sat, Oct 17
British Airways Logo
6:50 pm - 8:50 pm
TPA
-
KGS
19h 00m
1 stop
British Airways Logo
2:20 pm - 4:50 pm
KGS
-
TPA
33h 30m
1 stop
$1,518British Airways
Wed, Jul 1 - Tue, Jul 14
Finnair Logo
5:46 pm - 9:50 am
BOS
-
KGS
33h 04m
2 stops
Finnair Logo
10:40 am - 10:59 pm
KGS
-
BOS
19h 19m
2 stops
$1,794Finnair
Thu, Jul 2 - Fri, Jul 17
Finnair Logo
5:46 pm - 9:50 am
BOS
-
KGS
33h 04m
2 stops
Finnair Logo
10:40 am - 10:35 pm
KGS
-
BOS
42h 55m
2 stops
$2,092Finnair
Thu, Jul 2 - Sat, Jul 18

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SWISS flights from United States to Kos

Our best SWISS deals on United States to Kos flight tickets
SWISS
Sep 9
EWR9:45 pmNewark
34h 25m
1 stop
KGS3:10 pmKos
Sep 19
KGS8:45 pmKos
30h 30m
1 stop
EWR8:15 pmNewark
$848
SWISS
Aug 22
JFK4:15 pmNew York John F Kennedy Intl
15h 15m
1 stop
KGS2:30 pmKos
Aug 29
KGS8:45 pmKos
23h 05m
1 stop
JFK12:50 pmNew York John F Kennedy Intl
$954
SWISS
Jul 27
JFK7:25 pmNew York John F Kennedy Intl
17h 15m
2 stops
KGS7:40 pmKos
Aug 9
KGS3:15 pmKos
30h 05m
2 stops
JFK2:20 pmNew York John F Kennedy Intl
$978

Lufthansa flights from United States to Kos

Our best Lufthansa deals on United States to Kos flight tickets
Lufthansa
Oct 12
LAX3:05 pmLos Angeles
35h 35m
1 stop
KGS12:40 pmKos
Oct 26
KGS12:40 pmKos
36h 35m
1 stop
LAX4:15 pmLos Angeles
$903
Lufthansa
Sep 3
LGA3:30 pmNew York LaGuardia
34h 20m
2 stops
KGS8:50 amKos
Sep 7
KGS9:45 amKos
40h 51m
2 stops
LGA7:36 pmNew York LaGuardia
$1,009
Lufthansa
Sep 3
LGA2:30 pmNew York LaGuardia
35h 20m
2 stops
KGS8:50 amKos
Sep 7
KGS9:45 amKos
40h 51m
2 stops
LGA7:36 pmNew York LaGuardia
$1,013

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 June 11, 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

Tue 9/15

8:30 pm-7:05 pm

1 stop15h 35m

Kos

Mon 10/5

8:50 pm-1:55 pm

1 stop24h 05m

$792

NewarkKos

EWR - KGS

EWRKGS

Newark

Sun 8/30

5:40 pm-9:15 am

1 stop32h 35m

Kos

Mon 9/7

8:50 pm-2:08 pm

2 stops48h 18m

$800

NewarkKos

EWR - KGS

EWRKGS

Newark

Wed 9/9

9:45 pm-3:10 pm

1 stop34h 25m

Kos

Sat 9/19

8:45 pm-8:15 pm

1 stop30h 30m

$848

Los AngelesKos

LAX - KGS

LAXKGS

Los Angeles

Mon 10/12

3:05 pm-12:40 pm

1 stop35h 35m

Kos

Mon 10/26

12:40 pm-4:15 pm

1 stop36h 35m

$903
Quickest round-trip

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Sat 8/22

4:15 pm-2:30 pm

1 stop15h 15m

Kos

Sat 8/29

8:45 pm-12:50 pm

1 stop23h 05m

$954

New YorkKos

LGA - KGS

LGAKGS

New York LaGuardia

Thu 9/3

3:30 pm-8:50 am

2 stops34h 20m

Kos

Mon 9/7

9:45 am-7:36 pm

2 stops40h 51m

$1,009

TampaKos

TPA - KGS

TPAKGS

Tampa

Tue 9/15

7:00 pm-8:55 pm

1 stop18h 55m

Kos

Sat 10/17

2:05 pm-5:00 pm

1 stop33h 55m

$1,182

TampaKos

TPA - KGS

TPAKGS

Tampa

Wed 7/1

6:50 pm-8:50 pm

1 stop19h 00m

Kos

Tue 7/14

2:20 pm-4:50 pm

1 stop33h 30m

$1,518

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Thu 7/2

5:46 pm-9:50 am

2 stops33h 04m

Kos

Fri 7/17

10:40 am-10:59 pm

2 stops19h 19m

$1,794

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Thu 7/2

5:46 pm-9:50 am

2 stops33h 04m

Kos

Sat 7/18

10:40 am-10:35 pm

2 stops42h 55m

$2,092

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

13h 45m

Direct flights

None
The fastest flight from United States to Kos takes 13h 45m
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 $500Free CancellationRating
7.5
1,969 reviews
Search SWISS flights
LufthansaPriceFrom $626Free CancellationRating
6.8
8,052 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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