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Kos

$284+ Cheap flights from the United States to Kos (KGS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — KGS
Aug 2 — Aug 91
Sun 8/2
Sun 8/9
1 adult, Economy
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Cheap flight deals from USA to Kos

Cheapest flights from USA to Kos
Explore the most affordable flight options available from USA to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.

This SWISS deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:45 pm
EWR
-
KGS
1 stop15h 10m
SWISS
Tue 9/88:30 pm
KGS
-
EWR
1 stop30h 45m
SWISS
Deal found 7/2$755
This Mytrip deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:30 am
EWR
-
KGS
2 stops32h 30m
Multiple Airlines
Mon 7/206:10 pm
KGS
-
EWR
3 stops32h 48m
Multiple Airlines
Deal found 6/30$775
This SWISS deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:45 pm
EWR
-
KGS
1 stop14h 55m
SWISS
Tue 9/18:30 pm
KGS
-
EWR
1 stop30h 45m
SWISS
Deal found 6/29$808
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:10 pm
BOS
-
KGS
1 stop18h 15m
Multiple Airlines
Mon 8/1711:15 am
KGS
-
BOS
2 stops35h 55m
Multiple Airlines
Deal found 6/29$820
This SWISS deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:45 pm
EWR
-
KGS
1 stop15h 10m
SWISS
Wed 9/98:40 pm
KGS
-
EWR
1 stop30h 35m
SWISS
Deal found 7/2$826
This FlightHub deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:40 pm
EWR
-
KGS
1 stop20h 10m
Multiple Airlines
Tue 9/88:30 pm
KGS
-
EWR
1 stop30h 45m
Multiple Airlines
Deal found 6/30$832
This United deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:30 pm
EWR
-
KGS
2 stops38h 35m
Multiple Airlines
Tue 9/18:30 pm
KGS
-
EWR
1 stop30h 45m
Multiple Airlines
Deal found 6/29$837
This SWISS deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:45 pm
EWR
-
KGS
1 stop34h 25m
SWISS
Wed 9/28:40 pm
KGS
-
EWR
1 stop30h 35m
SWISS
Deal found 6/28$845
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/229:15 pm
BOS
-
KGS
1 stop16h 00m
Multiple Airlines
Fri 8/2810:25 pm
KGS
-
BOS
2 stops27h 50m
Multiple Airlines
Deal found 7/3$846
This Justfly.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:45 pm
EWR
-
KGS
1 stop34h 25m
SWISS
Tue 9/88:30 pm
KGS
-
EWR
1 stop30h 45m
SWISS
Deal found 6/30$848
This SWISS deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:40 pm
BOS
-
KGS
1 stop15h 00m
SWISS
Tue 9/18:30 pm
KGS
-
BOS
1 stop25h 40m
SWISS
Deal found 7/3$856
This FlightHub deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:30 am
BOS
-
KGS
2 stops26h 35m
Multiple Airlines
Tue 9/18:30 pm
KGS
-
BOS
1 stop25h 40m
Multiple Airlines
Deal found 7/3$858

Find flight deals from USA to Kos

Keep the following information in mind while searching for USA to Kos flight deals. Data was last updated July 3, 2026.

Round-trip from

$755
(SWISS)

One-way from

$284
(Kiwi.com)
From USA to Kos
Search Deals
One-way flight from USA to Kos
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA 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, Cheapflights users made 2,558,603 searches. Data last updated July 3, 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

Tue 9/8

8:30 pm-8:15 pm

1 stop30h 45m

$755

NewarkKos

EWR - KGS

EWRKGS

Newark

Mon 8/24

9:45 pm-7:40 pm

1 stop14h 55m

Kos

Tue 9/1

8:30 pm-8:15 pm

1 stop30h 45m

$808

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Tue 8/25

9:40 pm-7:55 pm

1 stop15h 15m

Kos

Mon 8/31

11:00 am-3:10 pm

1 stop35h 10m

$856

OrlandoKos

MCO - KGS

MCOKGS

Orlando

Wed 10/14

8:30 pm-9:15 pm

1 stop17h 45m

Kos

Sun 10/18

7:15 pm-6:25 pm

1 stop30h 10m

$861

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sun 8/23

8:05 pm-8:00 pm

2 stops16h 55m

Kos

Mon 8/31

11:00 am-3:10 pm

1 stop35h 10m

$886

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Mon 8/24

8:20 pm-7:40 pm

1 stop16h 20m

Kos

Mon 8/31

11:00 am-4:45 pm

1 stop36h 45m

$914

NewarkKos

EWR - KGS

EWRKGS

Newark

Thu 8/13

5:40 pm-8:50 pm

1 stop20h 10m

Kos

Sat 9/5

6:45 pm-1:55 pm

1 stop26h 10m

$917

NewarkKos

EWR - KGS

EWRKGS

Newark

Thu 8/13

5:40 pm-8:50 pm

1 stop20h 10m

Kos

Fri 9/4

9:40 pm-1:55 pm

1 stop23h 15m

$945

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Tue 9/29

3:40 pm-7:05 pm

2 stops20h 25m

Kos

Tue 10/13

8:30 pm-4:35 pm

1 stop27h 05m

$946

NewarkKos

EWR - KGS

EWRKGS

Newark

Sun 10/4

5:40 pm-8:00 pm

1 stop19h 20m

Kos

Sat 10/17

6:45 pm-1:55 pm

1 stop26h 10m

$955

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 55 resultsSorted by cheapest first
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Best time to book a flight from USA to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from USA with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to Kos
No data available for this route at this time. Please check back soon.

The best insider tips for theUnited States to Kos flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Kos trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Paul Rubio

Paul Rubio

Expert on SWISS

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Blane Bachelor

Blane Bachelor

Expert on Lufthansa

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated July 3, 2026.
Read reviews from past customers who have flown SWISS and Lufthansa from the United States to Kos. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,986 reviews

Boarding

7.7

Comfort

7.4

Crew

8.3

Overall

7.5

Food

7.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.
SWISS
7.5
Good
1,986 reviews
SWISS
7.5
Good
1,986 reviews

Boarding

7.7

Comfort

7.4

Crew

8.3

Overall

7.5

Food

7.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.
Lufthansa
6.8
Okay
8,108 reviews
SWISS
7.5
Good
1,986 reviews

Boarding

7.7

Comfort

7.4

Crew

8.3

Overall

7.5

Food

7.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.

Related info for your journey

Find useful and relevant information for your journey from USA to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kos from United States?

    For a flight from United States to Kos, you will be flying into Kos. Kos (KGS) is just 12.8 mi from the center of the city.

  • How long is the flight from USA to Kos?

    Departing from USA to Kos will take you 14h 10m. There are 5108 mi between USA and Kos. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from USA to Kos?

    While some choose either Newark - Kos or New York LaGuardia - Kos, New York John F Kennedy Intl - Kos is the most popular route from USA to Kos.

  • Can I find deals for flights from USA to Kos that include hotel bookings?

    Yes. In addition to deals on USA to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Kos.

  • Can I find deals for business class flights from USA to Kos?

    Yes. Cheapflights offers flight deals from USA to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from USA to Kos

Discover the top 2 airlines that operate flights from USA to Kos. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$496Average$1,050FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$626Average$950FlexibilityNo cancel feeOn-time76%

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