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$550+ 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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KSC
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
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 septiembre 17, 2025.

Round-trip from

$550
(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 septiembre 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
dom. 11/96:25 pmBOS - KSC
1 stop13h 50mAustrian Airlines
vie. 11/215:20 amKSC - BOS
1 stop14h 45mAustrian Airlines
Deal found 9/17$550
This Expedia deal was found by Cheapflights users on 9/17. 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.
dom. 11/99:50 pmBOS - KSC
1 stop15h 00mMultiple Airlines
vie. 11/219:45 amKSC - BOS
2 stops17h 42mMultiple Airlines
Deal found 9/17$569
This KAYAK deal was found by Cheapflights users on 9/17. 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.
mar. 11/119:50 pmBOS - KSC
1 stop10h 05mSWISS
vie. 11/219:45 amKSC - BOS
1 stop16h 15mSWISS
Deal found 9/17$574
This Gurufare deal was found by Cheapflights users on 9/17. 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.
dom. 11/99:50 pmBOS - KSC
1 stop15h 00mMultiple Airlines
jue. 11/202:55 pmKSC - BOS
1 stop29h 10mMultiple Airlines
Deal found 9/17$577
This Ovago deal was found by Cheapflights users on 9/17. 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.
dom. 11/96:25 pmBOS - KSC
1 stop13h 50mAustrian Airlines
jue. 11/205:20 amKSC - BOS
2 stops17h 55mAustrian Airlines
Deal found 9/17$578
This FlightHub deal was found by Cheapflights users on 9/17. 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.
lun. 11/105:30 amBOS - KSC
2 stops26h 45mMultiple Airlines
jue. 11/205:20 amKSC - BOS
2 stops34h 12mMultiple Airlines
Deal found 9/17$580
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
sáb. 11/85:10 pmBOS - KSC
1 stop11h 10mMultiple Airlines
lun. 11/242:10 pmKSC - BOS
2 stops36h 45mMultiple Airlines
Deal found 9/17$582
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
jue. 11/69:20 pmBOS - KSC
1 stop18h 05mMultiple Airlines
lun. 11/242:10 pmKSC - BOS
2 stops36h 45mMultiple Airlines
Deal found 9/17$584
This KAYAK deal was found by Cheapflights users on 9/17. 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.
mar. 11/116:25 pmBOS - KSC
1 stop13h 50mAustrian Airlines
jue. 11/202:55 pmKSC - BOS
1 stop29h 10mAustrian Airlines
Deal found 9/17$585
This KAYAK deal was found by Cheapflights users on 9/17. 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.
mar. 11/112:21 pmBOS - KSC
2 stops17h 54mAustrian Airlines
vie. 11/215:20 amKSC - BOS
1 stop14h 45mAustrian Airlines
Deal found 9/17$590
This KAYAK deal was found by Cheapflights users on 9/17. 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.
dom. 11/96:25 pmBOS - KSC
1 stop22h 50mAustrian Airlines
lun. 11/242:55 pmKSC - BOS
2 stops32h 20mAustrian Airlines
Deal found 9/17$596
This KAYAK deal was found by Cheapflights users on 9/17. 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.
mar. 11/111:30 pmBOS - KSC
2 stops18h 45mAustrian Airlines
mar. 11/182:55 pmKSC - BOS
2 stops32h 20mAustrian Airlines
Deal found 9/17$600

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 septiembre 17, 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

mar. 11/11

9:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

lun. 11/24

7:40 pm-8:20 pm

1 stop30h 40m

$574

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

mié. 11/12

9:50 pm-9:00 am

1 stop29h 10m

Košice Barca

vie. 11/21

9:45 am-8:00 pm

1 stop16h 15m

$574

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

mar. 11/11

6:25 pm-11:15 pm

1 stop22h 50m

Košice Barca

mar. 11/18

5:20 am-2:05 pm

1 stop14h 45m

$585

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

mar. 11/11

2:21 pm-2:15 pm

2 stops17h 54m

Košice Barca

vie. 11/21

5:20 am-2:05 pm

1 stop14h 45m

$590

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

lun. 11/10

1:30 pm-2:15 pm

2 stops18h 45m

Košice Barca

mar. 11/18

5:20 am-2:05 pm

1 stop14h 45m

$590

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

dom. 11/9

6:25 pm-11:15 pm

1 stop22h 50m

Košice Barca

lun. 11/24

2:55 pm-5:15 pm

2 stops32h 20m

$596

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

dom. 11/9

6:25 pm-11:15 pm

1 stop22h 50m

Košice Barca

mar. 11/18

5:20 am-6:48 pm

2 stops19h 28m

$596

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

dom. 11/9

6:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

mié. 11/19

2:55 pm-5:15 pm

2 stops32h 20m

$596

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

mié. 11/12

2:21 pm-11:15 pm

2 stops26h 54m

Košice Barca

mié. 11/19

2:55 pm-5:15 pm

2 stops32h 20m

$600

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

mié. 11/12

2:21 pm-11:15 pm

2 stops26h 54m

Košice Barca

mar. 11/18

2:55 pm-5:15 pm

2 stops32h 20m

$600

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 11 results
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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 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 15h 20m. 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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