KSC - BOS

$685 Find Cheap Flights from Košice to Boston

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Košice to Boston departing on 7/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

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

Cheapest round-trip
$685
Multiple Airlines
Mon 7/20Sun 8/9
KSC - BOS • 2 stops
Cheapest one-way
Multiple Airlines
Thu 2/5
KSC - BOS • multi-stop
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Košice to Boston (KSC-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Košice to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Košice to Boston

Mon, Jul 20 - Sun, Aug 9
Multiple Airlines Logo
2:45 pm - 5:40 pm
KSC
-
BOS
32h 55m
2 stops
Multiple Airlines Logo
9:40 pm - 6:55 pm
BOS
-
KSC
15h 15m
1 stop
$685Multiple Airlines
Mon, Jul 20 - Sun, Aug 9
Multiple Airlines Logo
5:25 am - 1:50 pm
KSC
-
BOS
14h 25m
1 stop
Multiple Airlines Logo
9:40 pm - 6:55 pm
BOS
-
KSC
15h 15m
1 stop
$696Multiple Airlines
Mon, Jul 20 - Sun, Aug 9
Multiple Airlines Logo
1:20 pm - 8:55 pm
KSC
-
BOS
37h 35m
3 stops
Multiple Airlines Logo
5:20 pm - 12:55 pm
BOS
-
KSC
13h 35m
2 stops
$1,253Multiple Airlines
Mon, Jul 20 - Sun, Aug 9
Multiple Airlines Logo
1:20 pm - 8:55 pm
KSC
-
BOS
37h 35m
3 stops
Multiple Airlines Logo
9:40 pm - 12:10 pm
BOS
-
KSC
32h 30m
3 stops
$1,384Multiple Airlines
Sat, Mar 7 - Sat, Mar 21
LOT Logo
5:15 am - 12:12 am
KSC
-
BOS
24h 57m
2 stops
LOT Logo
8:09 pm - 12:30 pm
BOS
-
KSC
35h 21m
2 stops
$1,639LOT
Sat, Mar 7 - Sat, Mar 21
Multiple Airlines Logo
5:15 am - 6:18 am
KSC
-
BOS
31h 03m
2 stops
Multiple Airlines Logo
8:09 pm - 12:10 am
BOS
-
KSC
23h 01m
2 stops
$1,643Multiple Airlines
Sat, Mar 7 - Sat, Mar 21
Multiple Airlines Logo
5:15 am - 10:25 am
KSC
-
BOS
35h 10m
2 stops
Multiple Airlines Logo
6:07 pm - 12:10 am
BOS
-
KSC
25h 03m
2 stops
$1,667Multiple Airlines
Booking Insights

KAYAK's insights & trends for Košice to Boston flights

Get data-powered insights and trends into flights from Košice to Boston 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 Košice to Boston?

Percentage of 1-stop round-trip flights from Košice to Boston 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 – 95% of KAYAK users who clicked on 1-stop flights from Košice to Boston picked an itinerary connecting there.

What is the cheapest layover airport when flying from Košice to Boston?

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

Flights via Vienna (VIE) offer the most affordable fares, with an average round-trip price of $668.

Which layover airport offers the shortest total travel time from Košice to Boston?

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

Consider flying via Zurich (ZRH) for the shortest journey. The average one-way travel time for flights connecting there is 11h 41m.

Which layover airport has the quickest connection when flying from Košice to Boston?

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

If you prefer a quick connection, Zurich (ZRH) often has the shortest layovers from Košice to Boston, with an average of 1h 15m.

Find deals

Good to know

Cheapest flight$685
Flight from Košice to Boston

When to book flights from Košice to Boston

Are your dates flexible? Find out the best times to travel from Košice to Boston 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.

FAQs for booking flights from Košice to Boston

  • What is the cheapest flight from Košice to Boston?

    In the last 3 days, the lowest price for a flight from Košice to Boston was $685 for a round-trip ticket.

  • Do I need a passport to fly between Košice and Boston?

    Yes

  • Which airports will I be using when flying from Košice to Boston?

    Košice and Boston are both served by 1 main airport. You will leave Košice from Košice Barca and will be arriving at Boston Logan Intl.

  • Which aircraft models fly most regularly from Košice to Boston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Košice to Boston?

    Star Alliance is the only airline alliance operating flights between Košice and Boston.

  • How does KAYAK find such low prices on flights from Košice to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Košice to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Košice to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Košice is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Košice to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Košice with another airline. Booking your flights between Košice and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Košice to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Košice up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Košice to Boston

 
See real verified KAYAK customer reviews for airlines flying from Košice to Boston. 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 Košice to Boston? 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.
7.6
SWISSOverall score based on 1864 reviews
8.3Crew
6.8Entertainment
7.1Food
7.7Boarding
7.4Comfort
Airline reviews

Great flight. I didn't watch the entertainment. I used my iPad the whole flight. But, staff was great, smooth flight, comfortable seat (business seat 7A) and food was really good (I'm a vegetarian).

10.0 ExcellentJanie, Jan 2026
ZRH - SFO
Read more SWISS reviews

Great flight. I didn't watch the entertainment. I used my iPad the whole flight. But, staff was great, smooth flight, comfortable seat (business seat 7A) and food was really good (I'm a vegetarian).

The flight was very nice but the food selection for the people in the last rows was limited to vegetarian meals only. I think vegetarian meal should not be offered as a main selection.

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.

We still don't have our luggages... flight was Saturday Jan 3rd and today is Wed 7th...even after fling the delayed/missing baggage report on saturday night and contacting SWISS (which is not answering) we still dont have our luggages...

Zürich-NY part of the trip was really good! Enjoyed professionalism and courtesy of the crew, comfort and cleanliness of the aircraft.

0lane 2qs on tim3. Very bad food. No free wifi, only for texts. Entertainment poor and hard to access.

At boarding, the locations where we had to have our passports checked prior to boarding were very unclear. Occasional staff wandered around telling people, but in busy area of the terminal this was not obvious. It was also located well after the check in desk in terms of walking to the gate. The Premium Economy service was attentive and warm. The only big draw back was lack of restrooms, and no division or even curtain between PE and Economy.

We had seats between the bathroom and a screaming baby, and did not have enough room to lay my head down on the tray table. Not ideal.

Very nice crew and great food. Easy to board just wish the flight could be shorter or seats more comfortable or more room to walk around when you get cramps in your legs from sitting so long. Crew was great and attentive and really was good food.

My experience was wonderful. The professionalism of the crew was exemplary 🙂. The meals were wholesome and tasty. I have no complaints

Everything you need to know for your flight from Košice to Boston

Information on your arrival and departure airports

Košice (KSC)
Boston (BOS)