HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Košice

$572+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KSC
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Košice with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 13, 2026.

This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/149:40 pm
BOS
-
KSC
1 stop10h 25m
SWISS
Mon 4/277:40 pm
KSC
-
BOS
1 stop30h 15m
SWISS
Deal found 2/12$572
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:10 pm
BOS
-
KSC
1 stop14h 50m
Austrian Airlines
Tue 4/282:45 pm
KSC
-
BOS
1 stop29h 05m
Austrian Airlines
Deal found 2/12$581
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:17 am
BOS
-
KSC
2 stops20h 43m
Austrian Airlines
Tue 4/282:45 pm
KSC
-
BOS
1 stop29h 05m
Austrian Airlines
Deal found 2/12$586
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:17 am
BOS
-
KSC
2 stops20h 43m
Austrian Airlines
Mon 4/272:45 pm
KSC
-
BOS
2 stops33h 34m
Austrian Airlines
Deal found 2/12$596
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:05 pm
BOS
-
KSC
2 stops21h 15m
Lufthansa
Mon 4/272:45 pm
KSC
-
BOS
2 stops32h 55m
Lufthansa
Deal found 2/12$641
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:05 pm
BOS
-
KSC
2 stops21h 15m
Lufthansa
Sun 4/262:45 pm
KSC
-
BOS
2 stops54h 55m
Lufthansa
Deal found 2/12$670
This FlightHub deal was found by Cheapflights users on 2/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:15 am
BOS
-
KSC
2 stops25h 45m
Multiple Airlines
Mon 4/277:40 pm
KSC
-
BOS
1 stop30h 15m
Multiple Airlines
Deal found 2/12$697
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 4/1411:30 pm
BOS
-
KSC
1 stop12h 30m
Multiple Airlines
Sun 4/261:05 pm
KSC
-
BOS
2 stops50h 30m
Multiple Airlines
Deal found 2/12$718
This FlightHub deal was found by Cheapflights users on 2/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:15 am
BOS
-
KSC
2 stops25h 45m
Multiple Airlines
Sat 4/255:25 am
KSC
-
BOS
2 stops34h 24m
Multiple Airlines
Deal found 2/12$753
This FlightHub deal was found by Cheapflights users on 2/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:45 am
BOS
-
KSC
2 stops30h 35m
Multiple Airlines
Mon 4/277:40 pm
KSC
-
BOS
1 stop30h 15m
Multiple Airlines
Deal found 2/12$812

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 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$572
(KAYAK)
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 13, 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

Tue 4/14

9:40 pm-2:05 pm

1 stop10h 25m

Košice Barca

Mon 4/27

7:40 pm-7:55 pm

1 stop30h 15m

$572

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 4/20

11:17 am-2:00 pm

2 stops20h 43m

Košice Barca

Tue 4/28

5:25 am-6:19 pm

2 stops18h 54m

$596

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 4/19

8:05 pm-11:20 pm

2 stops21h 15m

Košice Barca

Wed 4/29

2:45 pm-5:40 pm

2 stops32h 55m

$641

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-2:00 pm

2 stops35h 55m

Košice Barca

Thu 4/23

5:25 am-5:40 pm

2 stops18h 15m

$641

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-2:00 pm

2 stops11h 55m

Košice Barca

Wed 4/29

2:45 pm-5:40 pm

2 stops32h 55m

$641

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-11:20 pm

2 stops21h 15m

Košice Barca

Mon 4/27

2:45 pm-5:40 pm

2 stops32h 55m

$641

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 4/19

8:05 pm-2:00 pm

2 stops35h 55m

Košice Barca

Sun 4/26

2:45 pm-3:40 pm

2 stops54h 55m

$670

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-11:20 pm

2 stops21h 15m

Košice Barca

Sun 4/26

2:45 pm-3:40 pm

2 stops54h 55m

$670

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 4/15

9:40 pm-9:15 am

1 stop29h 35m

Košice Barca

Wed 4/29

2:50 pm-7:55 pm

1 stop11h 05m

$847

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 4/20

8:50 pm-8:15 pm

2 stops17h 25m

Košice Barca

Wed 4/29

6:25 pm-2:55 pm

1 stop26h 30m

$859

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 13 results
1
2

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 10h 25m. The time it takes to get you to your destination can typically vary by up to 10h 50m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Košice

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Bratislava flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights