BOS - KSC

$328 Find Cheap Flights from Boston to Košice - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$871
Typical prices: $810-$1,104
SWISS
Sat 1/6Sat 1/13
BOS - KSC • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Boston and Košice. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
October
Cheapest • 9% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Vienna Intl (VIE)
Cheapest • Avg $821 (round-trip)
Zurich (ZRH)
Shortest trip • 11h 02m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Boston to Košice (BOS-KSC)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Košice

Wed, Jan 6 - Wed, Jan 13
Multiple Airlines Logo
9:50 pm - 9:00 amBOS  Boston Logan Intl-KSC Košice Barca
29h 10m1 stop Zurich
Multiple Airlines Logo
2:55 pm - 2:18 pmKSC  Košice Barca-BOS Boston Logan Intl
53h 23m2 stops Vienna Intl Toronto Pearson Intl
$871Multiple Airlines
Wed, Jan 6 - Wed, Jan 13
Multiple Airlines Logo
2:25 pm - 2:15 pmBOS  Boston Logan Intl-KSC Košice Barca
17h 50m2 stops Washington, D.C. Dulles Intl Vienna Intl
Multiple Airlines Logo
2:55 pm - 10:37 pmKSC  Košice Barca-BOS Boston Logan Intl
37h 42m2 stops Vienna Intl Toronto Pearson Intl
$875Multiple Airlines
Fri, Dec 4 - Sun, Dec 20
Multiple Airlines Logo
9:20 pm - 6:55 amBOS  Boston Logan Intl-KSC Košice Barca
51h 35m2 stops Dublin Bratislava - M. R. Štefánik
Multiple Airlines Logo
2:55 pm - 1:55 pmKSC  Košice Barca-BOS Boston Logan Intl
29h 00m1 stop Dublin
$965Multiple Airlines
Fri, Dec 4 - Sun, Dec 20
Multiple Airlines Logo
3:10 pm - 8:05 pmBOS  Boston Logan Intl-KSC Košice Barca
22h 55m2 stops Toronto Pearson Intl London Heathrow
Multiple Airlines Logo
10:05 pm - 8:20 pmKSC  Košice Barca-BOS Boston Logan Intl
28h 15m2 stops London Stansted Zurich
$968Multiple Airlines
Fri, Dec 4 - Sun, Dec 20
Multiple Airlines Logo
6:50 pm - 8:05 pmBOS  Boston Logan Intl-KSC Košice Barca
19h 15m2 stops Shannon London Heathrow
Multiple Airlines Logo
10:05 pm - 8:20 pmKSC  Košice Barca-BOS Boston Logan Intl
28h 15m2 stops London Stansted Zurich
$969Multiple Airlines
Fri, Dec 4 - Sun, Dec 20
Multiple Airlines Logo
10:25 am - 8:05 pmBOS  Boston Logan Intl-KSC Košice Barca
27h 40m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl London Heathrow
Multiple Airlines Logo
10:05 pm - 8:20 pmKSC  Košice Barca-BOS Boston Logan Intl
28h 15m2 stops London Stansted Zurich
$1,015Multiple Airlines
Fri, Dec 4 - Sun, Dec 20
Multiple Airlines Logo
5:15 pm - 8:05 pmBOS  Boston Logan Intl-KSC Košice Barca
20h 50m2 stops Dublin London Heathrow
Multiple Airlines Logo
3:15 pm - 5:50 pmKSC  Košice Barca-BOS Boston Logan Intl
32h 35m3 stops Warsaw Frederic Chopin Oslo Gardermoen Reykjavik Keflavik Intl
$1,087Multiple Airlines
Sun, Nov 22 - Thu, Dec 3
Multiple Airlines Logo
7:50 pm - 6:55 pmBOS  Boston Logan Intl-KSC Košice Barca
17h 05m3 stops Reykjavik Keflavik Intl Paris Charles de Gaulle Zurich
Multiple Airlines Logo
9:15 pm - 2:40 pmKSC  Košice Barca-BOS Boston Logan Intl
23h 25m2 stops Rome Fiumicino Lisbon Humberto Delgado
$1,092Multiple Airlines
Wed, Jan 6 - Wed, Jan 13
Multiple Airlines Logo
10:25 am - 8:05 pmBOS  Boston Logan Intl-KSC Košice Barca
27h 40m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl London Heathrow
Multiple Airlines Logo
2:55 pm - 8:15 pmKSC  Košice Barca-BOS Boston Logan Intl
35h 20m3 stops Vienna Intl Brussels Bruxelles-National Lisbon Humberto Delgado
$1,097Multiple Airlines
Fri, Dec 4 - Sun, Dec 20
Multiple Airlines Logo
7:50 pm - 2:40 pmBOS  Boston Logan Intl-KSC Košice Barca
36h 50m3 stops Reykjavik Keflavik Intl London Heathrow Warsaw Frederic Chopin
Multiple Airlines Logo
3:15 pm - 5:50 pmKSC  Košice Barca-BOS Boston Logan Intl
56h 35m3 stops Warsaw Frederic Chopin London Heathrow Reykjavik Keflavik Intl
$1,098Multiple Airlines
Booking Insights

Price, demand and travel trends for Boston to Košice flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What’s the most popular layover airport when flying from Boston to Košice?

Zurich (ZRH) is the most popular layover for the Boston to Košice route. 55% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via ZRH.

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

Flights via Vienna Intl (VIE) offer the most affordable fares, with an average round-trip price of $821. Based on KAYAK data over the past 3 months.

When flying from Boston to Košice which airport offers the shortest layover?

Zurich (ZRH) had the shortest average connection time for Boston to Košice layovers at 6h 26m over the past 3 months.

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Key details for Boston to Košice flights

Cheapest flight

$328
The most popular month to fly with an average 26% increase in travelers.
One-way flight from Boston to Košice

When to book flights from Boston to Košice

Are your dates flexible? Find out the best times to travel from Boston to Košice based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Boston to Košice flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Boston to Košice?

    Only Economy Class is available on flights from Boston to Košice.

  • How long is a flight from Boston to Košice?

    A nonstop flight from Boston to Košice takes 00m, covering 4,203 miles.

  • Do I need a passport to fly from Boston to Košice?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Boston to Košice flight?

    Round-trip flights from Boston to Košice range from $810 to $1,104, with an average of $829 over the past 12 months. Anything below $810 counts as a good deal.

  • Have flight prices from Boston to Košice changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $871 to $1,973. That means the highest observed fare was about 2x higher than the lowest one.

  • What car rental options are available at Košice Barca Airport (KSC)?

    Košice Barca Airport (KSC) hosts 5 major car rental companies, with daily rates averaging $44 for economy cars. Top options include:

    • Budget
    • Europcar
    • Avis
    • Sixt
    • Alamo

  • Which airports can I use when flying from Boston to Košice?

    Flights from Boston to Košice usually depart from Boston Logan Intl (BOS) and arrive at Košice Barca (KSC).

  • Which airports do connecting flights from Boston to Košice pass through?

    Connecting flights from Boston to Košice most commonly pass through:

    • Zurich (ZRH) - 55% of one-stop connections
    • Vienna Intl (VIE) - 45% of one-stop connections

  • Can I save money by using flexible dates for flights from Boston to Košice?

    Yes. Flexible dates can save you up to 36% on flights from Boston to Košice. Wednesday is the cheapest departure day at $757 round-trip on average, while Friday is the most expensive at $1,171, a difference of $414.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Boston to Košice?

    Flying via Zurich (ZRH) gives the shortest average 1-stop total travel time at 11h 02m, compared with 13h 44m via Vienna Intl (VIE).

  • What is the time difference between Boston and Košice?

    Košice is 6 hours ahead of Boston (Central European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Boston to Košice flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Friday. On this route, Wednesday flights average $757, about $414 less than Friday fares (35% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Boston to Košice trip for October. Fares historically average $757 round-trip in that month - typically $1,334 less than the most expensive month, which is June (based on the last 12 months).

More options for your flight from Boston to Košice

Complete your trip to Košice with a hotel stay or car rental

Car rentals in Košice
Hotels in Košice