$379 Cheap Swiss International Air Lines flights Newark Liberty Intl. Airport (EWR) to Kos (KGS)

View $379 flight on Mon, Jul 7, 2025Opens in a new window

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$379 Cheap Swiss International Air Lines flights Newark Liberty Intl. Airport (EWR) to Kos (KGS)

Prices were available within the past 7 days and start at $379 for one-way flights and $459 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Mon, Aug 18 - Thu, Sep 4
EWR
New York
KGS
Kos
$459 Roundtrip, found 2 days ago
$459
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, Aug 18 from New York to Kos, returning Thu, Sep 4, priced at $459 found 2 days ago
Swiss International Air Lines
Mon, Jul 14 - Tue, Jul 22
EWR
New York
KGS
Kos
$466 Roundtrip, found 8 hours ago
$466
Roundtrip
found 8 hours ago
Select Swiss International Air Lines flight, departing Mon, Jul 14 from New York to Kos, returning Tue, Jul 22, priced at $466 found 8 hours ago
Swiss International Air Lines
Tue, Jul 15 - Tue, Jul 22
EWR
New York
KGS
Kos
$493 Roundtrip, found 2 days ago
$493
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Tue, Jul 15 from New York to Kos, returning Tue, Jul 22, priced at $493 found 2 days ago
Swiss International Air Lines
Tue, Jul 15 - Tue, Jul 29
EWR
New York
KGS
Kos
$495 Roundtrip, found 3 days ago
$495
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, Jul 15 from New York to Kos, returning Tue, Jul 29, priced at $495 found 3 days ago
Swiss International Air Lines
Wed, Aug 20 - Wed, Sep 3
EWR
New York
KGS
Kos
$499 Roundtrip, found 4 days ago
$499
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Wed, Aug 20 from New York to Kos, returning Wed, Sep 3, priced at $499 found 4 days ago
Swiss International Air Lines
Mon, Jul 7 - Tue, Jul 29
EWR
New York
KGS
Kos
$514 Roundtrip, found 4 days ago
$514
Roundtrip
found 4 days ago
Select Swiss International Air Lines flight, departing Mon, Jul 7 from New York to Kos, returning Tue, Jul 29, priced at $514 found 4 days ago
Flights from Newark Liberty Intl. Airport (EWR) to Kos (KGS)
Origin airport
Newark Liberty Intl. Airport
Destination airport
Kos Island Intl.
Airlines serving
Austrian Airlines, Brussels Airlines, Emirates, Lufthansa, Swiss International Air Lines
Popular airline
Swiss International Air Lines
Distance
5127 mi

Frequently asked questions

How much is a SWISS flight from Liberty Intl. Airport (EWR) to Kos Island Intl. Airport (KGS)?
Landing cheap one-way SWISS flights from EWR to KGS from $379 on Expedia is a breeze --- just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $459 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from EWR to KGS with SWISS?
Look for one-way or return flights to Kos in December or February. You could find a cheap fare with SWISS during these off-season months.
What is the cheapest time to book flights from Liberty Intl. Airport (EWR) to Kos Island Intl. Airport (KGS) with SWISS?
Look for SWISS flights from EWR to KGS about one month before you want to go. The cheapest time to book an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. No matter your fare class or itinerary, the best day to book international airfare is usually Sunday. Friday is often the most expensive. Passengers booking on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does SWISS fly nonstop from Liberty Intl. Airport (EWR) to Kos Island Intl. Airport (KGS)?
Fill in your dates, hit search and check the "Nonstop" filter on Expedia to browse any direct flights from EWR to KGS with SWISS or other airlines.
What is the earliest SWISS flight from EWR to KGS?
To find the earliest departure from EWR to KGS with SWISS, sort your results by "Early Morning" and "Morning." Choosing an early flight generally means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does SWISS fly into in Kos?
Board a SWISS flight from Liberty Intl. Airport (EWR) to Kos, and you'll probably touch down at Kos Island Intl. Airport (KGS). This is the airline's primary hub in this city.
What kind of luggage can I take on a SWISS flight from Liberty Intl. Airport (EWR) to Kos Island Intl. Airport (KGS)?
On a standard economy flight with SWISS from EWR to KGS, you can bring 1 checked-in bag up to 50 lb with dimensions not exceeding 62 inches in total. For hand luggage, you're allowed 1 cabin bag weighing up to 17 lb and measuring no more than 22 inches x 21 inches x 5 inches. Weight and size restrictions can vary depending on your airfare type and cabin class. To make sure you don't get caught with extra charges at the airport, check your SWISS booking or visit the airline's website before packing your bags.
Why fly with SWISS from EWR to KGS?
SWISS makes traveling from EWR to KGS enjoyable with a rewarding loyalty program and a 4-star airline rating. You could even start earning points with Swiss Miles & More. Be sure to sign up to Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my SWISS flight from Liberty Intl. Airport (EWR) to Kos Island Intl. Airport (KGS)?
You can usually cancel or modify your flight, although there may be additional fees if your booking was made more than 24 hours ago. Need to keep your options open? Apply the "No cancel fee" or "Changes included" filter to find flights that won't charge extra if you have to alter your plans. To make modifications, visit "Trips," select your flight and click on "Manage Booking" for further information.

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