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$537+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KSC
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
1 adult, Economy
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Find flight deals from Boston to Košice

Best flights from Boston to Košice
Discover carefully curated flight deals from Boston to Košice that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:25 pmBOS - KSC
1 stop13h 50mAustrian Airlines
Fri 2/275:20 amKSC - BOS
1 stop14h 45mAustrian Airlines
Deal found 11/29$537
This FlightHub deal was found by Cheapflights users on 11/29. 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.
Mon 2/165:30 amBOS - KSC
2 stops26h 45mMultiple Airlines
Fri 2/275:20 amKSC - BOS
1 stop14h 45mMultiple Airlines
Deal found 11/29$580
This KAYAK deal was found by Cheapflights users on 11/29. 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.
Sun 2/158:40 pmBOS - KSC
2 stops11h 35mLufthansa
Sun 3/12:55 pmKSC - BOS
2 stops52h 15mLufthansa
Deal found 11/29$666
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:25 pmBOS - KSC
1 stop13h 50mAustrian Airlines
Fri 2/275:20 amKSC - BOS
1 stop14h 45mAustrian Airlines
Deal found 11/29$537
This FlightHub deal was found by Cheapflights users on 11/29. 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.
Tue 2/178:40 pmBOS - KSC
2 stops11h 35mMultiple Airlines
Fri 2/275:20 amKSC - BOS
2 stops18h 01mMultiple Airlines
Deal found 11/29$598
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:25 pmBOS - KSC
1 stop22h 50mAustrian Airlines
Sun 3/12:55 pmKSC - BOS
2 stops34h 13mAustrian Airlines
Deal found 11/29$563
This FlightHub deal was found by Cheapflights users on 11/29. 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.
Sun 2/158:40 pmBOS - KSC
2 stops11h 35mMultiple Airlines
Fri 2/275:20 amKSC - BOS
2 stops18h 01mMultiple Airlines
Deal found 11/29$598
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:25 pmBOS - KSC
1 stop22h 50mAustrian Airlines
Sun 3/12:55 pmKSC - BOS
2 stops34h 13mAustrian Airlines
Deal found 11/29$563
This Expedia deal was found by Cheapflights users on 11/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/165:30 amBOS - KSC
2 stops26h 45mMultiple Airlines
Sat 2/282:55 pmKSC - BOS
1 stop29h 10mMultiple Airlines
Deal found 11/29$630
This Kiwi.com deal was found by Cheapflights users on 11/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:25 pmBOS - KSC
1 stop13h 50mAustrian Airlines
Sat 2/282:55 pmKSC - BOS
1 stop29h 10mAustrian Airlines
Deal found 11/29$587

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 December 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$537
(Kiwi.com)
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
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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 December 1, 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

Tue 2/17

6:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

Fri 2/27

5:20 am-2:05 pm

1 stop14h 45m

$537

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 2/15

6:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

Fri 2/27

5:20 am-2:05 pm

1 stop14h 45m

$537

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 2/17

6:25 pm-11:15 pm

1 stop22h 50m

Košice Barca

Sun 3/1

2:55 pm-7:08 pm

2 stops34h 13m

$563

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 2/15

6:25 pm-11:15 pm

1 stop22h 50m

Košice Barca

Sun 3/1

2:55 pm-7:08 pm

2 stops34h 13m

$563

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 2/16

5:30 am-2:15 pm

2 stops26h 45m

Košice Barca

Fri 2/27

5:20 am-2:05 pm

1 stop14h 45m

$580

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 2/17

6:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

Sat 2/28

2:55 pm-2:05 pm

1 stop29h 10m

$587

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 2/17

8:40 pm-2:15 pm

2 stops11h 35m

Košice Barca

Fri 2/27

5:20 am-5:21 pm

2 stops18h 01m

$598

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 2/15

8:40 pm-2:15 pm

2 stops11h 35m

Košice Barca

Fri 2/27

5:20 am-5:21 pm

2 stops18h 01m

$598

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 2/16

5:30 am-2:15 pm

2 stops26h 45m

Košice Barca

Sat 2/28

2:55 pm-2:05 pm

1 stop29h 10m

$630

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 2/15

8:40 pm-2:15 pm

2 stops11h 35m

Košice Barca

Sun 3/1

2:55 pm-1:10 pm

2 stops52h 15m

$666

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/29

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 December.
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 Austrian Airlines fly from Boston to Košice in about 13h 50m. The time it takes to get you to your destination can typically vary by up to . The distance from Boston to Košice is about 4203 mi.

  • 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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