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$549+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KSC
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
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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 August 13, 2025.

Round-trip from

$549
(Kiwi.com)
From Boston Logan Intl to Košice Barca
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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 August 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Wed 10/2910:50 pmBOS - KSC
1 stop29h 10mMultiple Airlines
Tue 11/115:20 amKSC - BOS
2 stops17h 55mMultiple Airlines
Deal found 8/12$549
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 11/49:50 pmBOS - KSC
1 stop10h 05mMultiple Airlines
Mon 11/102:55 pmKSC - BOS
1 stop29h 10mMultiple Airlines
Deal found 8/12$553
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 11/41:30 pmBOS - KSC
2 stops18h 45mAustrian Airlines
Mon 11/102:55 pmKSC - BOS
1 stop29h 10mAustrian Airlines
Deal found 8/12$560
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:50 pmBOS - KSC
1 stop10h 05mMultiple Airlines
Tue 11/115:20 amKSC - BOS
1 stop14h 45mMultiple Airlines
Deal found 8/11$565
This SWISS deal was found by Cheapflights users on 8/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:50 pmBOS - KSC
1 stop10h 05mSWISS
Mon 11/107:40 pmKSC - BOS
1 stop30h 40mSWISS
Deal found 8/11$568
This Ovago deal was found by Cheapflights users on 8/11. 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.
Tue 10/287:25 pmBOS - KSC
1 stop13h 50mAustrian Airlines
Tue 11/115:20 amKSC - BOS
1 stop14h 45mAustrian Airlines
Deal found 8/11$571
This KAYAK deal was found by Cheapflights users on 8/13. 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 11/119:50 pmBOS - KSC
1 stop10h 05mSWISS
Mon 11/247:40 pmKSC - BOS
1 stop30h 40mSWISS
Deal found 8/13$573
This Ovago deal was found by Cheapflights users on 8/11. 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 10/2911:59 amBOS - KSC
2 stops21h 16mAustrian Airlines
Tue 11/115:20 amKSC - BOS
1 stop14h 45mAustrian Airlines
Deal found 8/11$575
This FlightHub deal was found by Cheapflights users on 8/13. 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 11/105:30 amBOS - KSC
2 stops26h 45mMultiple Airlines
Fri 11/219:45 amKSC - BOS
1 stop16h 35mMultiple Airlines
Deal found 8/13$576

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 August 13, 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

Wed 10/29

10:50 pm-9:00 am

1 stop29h 10m

Košice Barca

Tue 11/11

5:20 am-5:15 pm

2 stops17h 55m

$549

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/4

9:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

Mon 11/10

2:55 pm-2:05 pm

1 stop29h 10m

$553

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/4

1:30 pm-2:15 pm

2 stops18h 45m

Košice Barca

Mon 11/10

2:55 pm-2:05 pm

1 stop29h 10m

$560

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/4

9:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

Tue 11/11

5:20 am-2:05 pm

1 stop14h 45m

$565

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/9

6:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

Fri 11/21

9:45 am-8:20 pm

1 stop16h 35m

$565

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/4

9:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

Mon 11/10

7:40 pm-8:20 pm

1 stop30h 40m

$568

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

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.

  • What is the cheapest airline to fly from Boston to Košice round-trip?

    According to our current data, Austrian Airlines ($560), offers the cheapest pricing from Boston to Košice.

  • 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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