EWR - KGS

$353 Find Cheap Flights from Newark Liberty Airport to Kos

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Kos

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Kos, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Kos, as well as popular online travel agencies
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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Newark and Kos. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $829 (round-trip)
Shortest trip • 11h 40m (one-way)
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Booking Insights

KAYAK's insights & trends for Newark to Kos flights

Get data-powered insights and trends into flights from Newark to Kos to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Newark Liberty Airport to Kos?

Percentage of 1-stop round-trip flights from Newark Liberty Airport to Kos chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Zurich (ZRH) is the top choice – 65% of KAYAK users who clicked on 1-stop flights from Newark Liberty Airport to Kos picked an itinerary connecting there.

What is the cheapest layover airport when flying from Newark Liberty Airport to Kos?

Average round-trip price for 1-stop flights from Newark Liberty Airport to Kos clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Zurich (ZRH) offer the most affordable fares, with an average round-trip price of $829.

Which layover airport offers the shortest total travel time from Newark Liberty Airport to Kos?

Shortest average total travel time for 1-stop one-way flights from Newark Liberty Airport to Kos via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Frankfurt am Main (FRA) for the shortest journey. The average one-way travel time for flights connecting there is 11h 40m.

Which layover airport has the quickest connection when flying from Newark Liberty Airport to Kos?

Average layover duration at different layover airports for 1-stop one-way flights from Newark Liberty Airport to Kos, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Frankfurt am Main (FRA) often has the shortest layovers from Newark Liberty Airport to Kos, with an average of 1h 16m.

Good to know

Cheapest flight$353
Flight from Newark Liberty Airport to Kos

When to book flights from Newark to Kos

Are your dates flexible? Find out the best times to travel from Newark to Kos based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Reviews of the top airline flying from Newark to Kos

 
See real verified KAYAK customer reviews for airlines flying from Newark to Kos. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Newark to Kos? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
SWISSOverall score based on 1898 reviews
7.7Boarding
7.4Comfort
6.8Entertainment
8.3Crew
7.1Food
Airline reviews

The flight itself was fine, but due to a snow delay my connection to Lisbon was delayed by six hours. Despite this, Swiss Air still managed to lose my luggage. Not acceptable. Someone else on the flight also lost their luggage.

6.0 GoodSonja, Jan 2026
BOS - ZRH
Read more SWISS reviews

The flight itself was fine, but due to a snow delay my connection to Lisbon was delayed by six hours. Despite this, Swiss Air still managed to lose my luggage. Not acceptable. Someone else on the flight also lost their luggage.

Bad experience overall. Crew did not provide food for our 2 year old (even though we specifically bought a child infant seat for her and literally bought another full price flight), which was unacceptable. And we had to pay $310 each way to carry our ski equipment even though they advertise it as something that is free. Tickets were purchased the same way as usual, but they told us we had Economy Light tickets (I never elected to have such seats). Just plain manipulation and false advertisment. Very disappointed overall about this airline.

The trip was great until my luggage was lost on transfer from United to Swiss. It took Swiss 3 days to get my luggage to me though it was located almost immediately.

Horrible!! The WiFi was not working, the food was awful

We’ve never been more uncomfortable on a flight than we have on this particular one. The seats in front of us reclined so far back that when the person reclined their seat of broccoli, it almost hit me in the face and left me with literally no room to move that said I had to recline my seed in which made the person behind me upset. It seemed like the seats also would recline without even pressing the button in the armrest and would unrecline as well for that same reason, and it also seemed that some seats reclined more than others. The bottom cushions of the seat were so thin that even after one hour of an 11 hour flight, our tailbones were so sore. It seemed like an overall old airplane. It also didn’t have individual air vents and it was extremely hot the entire flight. Several passengers were commenting on how hot it was. The breakfast was some kind of flavorless triangle, puffy egg, laying in a watery bed of steamed peppers and onions and spinach. It was not appetizing at all. The flight crew was extremely nice so that was a nice thing this flight attendant. They let us try different types of Swiss sodas, which was really nice and the dinner was actually delicious but still overall given the other considerations. It was pretty much a miserable flight without basic seat comfort.

Food used to be better and comfort was not attainable after 5 hours everything starts hurting.

horrible.. they cause such a problem and my daughter 14 years old was stranded in san francisco

I can’t even the whole trip was a catastrophe

Poor. Seats uncomfortable. No leg room. Hot and humid the whole trip. Food and staffs were ok.

The seats were so close together, when the man in front of me put his seat back, the screen in front of me was 9 inches from my face. There is no way to lean forward if I needed to pick something up. It was pretty uncomfortable for a ten hour flight. I was very surprised.

Everything you need to know for your flight from Newark to Kos

Information on your arrival and departure airports