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Košice

$709+ Cheap flights from Boston (BOS) to Košice (KSC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KSC
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap flight deals from Boston to Košice

Cheapest flights from Boston to Košice
Explore the most affordable flight options available from Boston to Košice. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 19, 2026.

This BusinessClass deal was found by Cheapflights users on 2/18. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/103:35 pm
BOS
-
KSC
2 stops16h 25m
Multiple Airlines
Mon 8/177:40 pm
KSC
-
BOS
1 stop30h 15m
Multiple Airlines
Deal found 2/18$709
This KAYAK deal was found by Cheapflights users on 2/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:40 pm
BOS
-
KSC
1 stop10h 25m
SWISS
Fri 8/2810:00 am
KSC
-
BOS
1 stop15h 55m
SWISS
Deal found 2/18$712
This FlightHub deal was found by Cheapflights users on 2/18. 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.
Thu 7/305:10 pm
BOS
-
KSC
1 stop14h 50m
Austrian Airlines
Tue 9/12:45 pm
KSC
-
BOS
1 stop29h 05m
Austrian Airlines
Deal found 2/18$769
This KAYAK deal was found by Cheapflights users on 2/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:20 pm
BOS
-
KSC
1 stop14h 45m
SWISS
Sat 8/299:55 am
KSC
-
BOS
1 stop16h 00m
SWISS
Deal found 2/18$772
This KAYAK deal was found by Cheapflights users on 2/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:05 pm
BOS
-
KSC
2 stops21h 15m
Lufthansa
Mon 8/312:45 pm
KSC
-
BOS
2 stops30h 55m
Lufthansa
Deal found 2/18$789
This FlightHub deal was found by Cheapflights users on 2/18. 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.
Thu 7/308:05 pm
BOS
-
KSC
2 stops11h 55m
Multiple Airlines
Tue 9/15:25 am
KSC
-
BOS
2 stops17h 13m
Multiple Airlines
Deal found 2/18$792
This KAYAK deal was found by Cheapflights users on 2/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:05 pm
BOS
-
KSC
2 stops21h 15m
Lufthansa
Sun 8/302:45 pm
KSC
-
BOS
2 stops54h 55m
Lufthansa
Deal found 2/18$810
This FlightHub deal was found by Cheapflights users on 2/18. 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.
Fri 7/315:45 pm
BOS
-
KSC
2 stops14h 15m
Multiple Airlines
Tue 9/15:25 am
KSC
-
BOS
2 stops17h 13m
Multiple Airlines
Deal found 2/18$814
This Travelocity deal was found by Cheapflights users on 2/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:45 pm
BOS
-
KSC
2 stops14h 15m
Multiple Airlines
Mon 8/317:40 pm
KSC
-
BOS
1 stop25h 30m
Multiple Airlines
Deal found 2/18$815
This SWISS deal was found by Cheapflights users on 2/18. 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.
Thu 7/305:20 pm
BOS
-
KSC
1 stop9h 55m
SWISS
Mon 8/317:40 pm
KSC
-
BOS
1 stop30h 15m
SWISS
Deal found 2/18$821

Find flight deals from Boston to Košice

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Košice (KSC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$709
(BusinessClass)
Provider with most accurate pricing for Boston Logan Intl-Košice Barca flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Košice Barca flights.
Search Deals
From Boston Logan Intl to Košice Barca
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Košice 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 February 19, 2026.
Use the filters below to find and compare flights from Boston to Košice that are best for you.

Fly from

Boston

Fly to

Košice

Route

Depart

Return

Price

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 8/2

9:40 pm-6:55 pm

1 stop15h 15m

Košice Barca

Mon 8/31

7:40 pm-7:55 pm

1 stop30h 15m

$712

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 8/2

9:40 pm-6:55 pm

1 stop15h 15m

Košice Barca

Wed 9/2

2:50 pm-7:55 pm

1 stop11h 05m

$712

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 8/3

9:40 pm-6:25 pm

1 stop14h 45m

Košice Barca

Mon 8/31

7:40 pm-7:55 pm

1 stop30h 15m

$712

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 7/30

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Tue 9/1

5:25 am-4:38 pm

2 stops17h 13m

$774

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 8/2

8:05 pm-11:20 pm

2 stops21h 15m

Košice Barca

Fri 8/28

5:25 am-3:40 pm

2 stops16h 15m

$789

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 8/3

8:05 pm-11:20 pm

2 stops21h 15m

Košice Barca

Wed 9/2

5:25 am-8:10 pm

2 stops20h 45m

$789

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 8/3

8:05 pm-11:20 pm

2 stops21h 15m

Košice Barca

Fri 8/28

5:25 am-3:40 pm

2 stops16h 15m

$789

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 8/3

8:05 pm-2:00 pm

2 stops11h 55m

Košice Barca

Thu 9/3

5:25 am-3:40 pm

2 stops16h 15m

$789

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 7/30

8:05 pm-2:00 pm

2 stops11h 55m

Košice Barca

Tue 9/1

5:25 am-4:38 pm

2 stops17h 13m

$792

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 8/1

8:05 pm-2:00 pm

2 stops11h 55m

Košice Barca

Tue 9/1

5:25 am-4:38 pm

2 stops17h 13m

$792

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 12 results
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Compare providers for flights from Boston to Košice

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Košice in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Košice flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Košice flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Košice flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Košice flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Košice flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Košice

Have a flexible travel schedule? Discover the best time to fly to Košice from Boston 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.

Related info for your journey

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

  • How long is the flight from Boston to Košice?

    Airlines like SWISS, Austrian Airlines, and Lufthansa fly from Boston to Košice in about 14h 50m. The time it takes to get you to your destination can typically vary by up to 6h 25m. The distance from Boston to Košice is about 4203 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Boston to Košice that include hotel bookings?

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

  • How can I find direct flights from Boston to Košice?

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

  • Can I find deals for business class flights from Boston to Košice?

    Yes. Cheapflights offers flight deals from Boston to Košice 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

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