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$708+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KSC
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
1 adult, Economy
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Find 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 November 12, 2025.

This KAYAK deal was found by Cheapflights users on 11/11. 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.
Wed 12/108:40 pmBOS - KSC
2 stops11h 35mLufthansa
Mon 12/152:55 pmKSC - BOS
2 stops52h 30mLufthansa
Deal found 11/11$912
This Ovago deal was found by Cheapflights users on 11/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:50 pmBOS - KSC
1 stop29h 10mSWISS
Mon 12/157:40 pmKSC - BOS
1 stop30h 40mSWISS
Deal found 11/11$1,080
This Ovago deal was found by Cheapflights users on 11/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:50 pmBOS - KSC
1 stop29h 10mMultiple Airlines
Mon 12/152:55 pmKSC - BOS
2 stops32h 21mMultiple Airlines
Deal found 11/11$1,093
This KAYAK deal was found by Cheapflights users on 11/10. 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.
Wed 12/38:40 pmBOS - KSC
2 stops20h 35mLufthansa
Mon 12/82:55 pmKSC - BOS
2 stops52h 30mLufthansa
Deal found 11/10$1,162
This Gurufare deal was found by Cheapflights users on 11/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:35 pmBOS - KSC
2 stops18h 40mMultiple Airlines
Mon 12/87:40 pmKSC - BOS
1 stop30h 40mMultiple Airlines
Deal found 11/10$1,343
This Ovago deal was found by Cheapflights users on 11/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:50 pmBOS - KSC
1 stop29h 10mSWISS
Mon 12/87:40 pmKSC - BOS
1 stop30h 40mSWISS
Deal found 11/10$1,364

Cheap 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 November 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$708
(KAYAK)
Provider with most accurate pricing for Boston Logan Intl-Košice Barca flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Košice Barca flights.
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From Boston Logan Intl to Košice Barca
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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 November 12, 2025.
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 5/10

5:05 pm-6:50 pm

1 stop19h 45m

Košice Barca

Wed 6/3

2:45 pm-7:55 pm

1 stop11h 10m

$708

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 5/10

9:40 pm-6:50 pm

1 stop15h 10m

Košice Barca

Fri 6/5

9:40 am-3:30 pm

1 stop11h 50m

$708

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 5/10

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Fri 6/5

5:25 am-5:40 pm

2 stops18h 15m

$777

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 5/10

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Tue 6/2

5:25 am-5:40 pm

2 stops42h 15m

$777

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 5/10

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Wed 6/3

5:25 am-5:40 pm

2 stops42h 15m

$777

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 5/11

8:05 pm-2:00 pm

2 stops35h 55m

Košice Barca

Thu 6/4

5:25 am-5:40 pm

2 stops18h 15m

$777

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 5/10

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Thu 6/4

2:45 pm-5:40 pm

2 stops32h 55m

$777

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 5/11

8:05 pm-2:00 pm

2 stops35h 55m

Košice Barca

Mon 6/1

2:45 pm-5:40 pm

2 stops32h 55m

$777

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 5/11

8:05 pm-2:00 pm

2 stops35h 55m

Košice Barca

Tue 6/2

5:25 am-5:40 pm

2 stops42h 15m

$777

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 5/10

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Mon 6/1

2:45 pm-5:40 pm

2 stops32h 55m

$777

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

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 November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Košice flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 and Lufthansa fly from Boston to Košice in about 19h 45m. The time it takes to get you to your destination can typically vary by up to 1h 40m. 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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