HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Košice

$554+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KSC
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
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.

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 October 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/85:10 pmBOS - KSC
1 stop11h 10mMultiple Airlines
Sun 11/2310:45 amKSC - BOS
1 stop14h 10mMultiple Airlines
Deal found 10/27$741
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/85:10 pmBOS - KSC
1 stop11h 10mMultiple Airlines
Fri 11/2110:15 pmKSC - BOS
2 stops28h 40mMultiple Airlines
Deal found 10/27$843
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Thu 11/64:45 pmBOS - KSC
2 stops22h 40mMultiple Airlines
Sun 11/2310:45 amKSC - BOS
1 stop14h 10mMultiple Airlines
Deal found 10/27$915
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/85:10 pmBOS - KSC
1 stop11h 10mMultiple Airlines
Mon 11/242:10 pmKSC - BOS
2 stops29h 45mMultiple Airlines
Deal found 10/27$930
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/85:10 pmBOS - KSC
1 stop11h 10mMultiple Airlines
Thu 11/203:35 pmKSC - BOS
2 stops33h 20mMultiple Airlines
Deal found 10/27$933
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Thu 11/69:20 pmBOS - KSC
1 stop18h 05mMultiple Airlines
Fri 11/2110:15 pmKSC - BOS
2 stops28h 40mMultiple Airlines
Deal found 10/27$953
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/85:10 pmBOS - KSC
1 stop11h 10mMultiple Airlines
Sat 11/2210:05 amKSC - BOS
2 stops40h 05mMultiple Airlines
Deal found 10/27$971
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/85:10 pmBOS - KSC
1 stop11h 10mMultiple Airlines
Tue 11/1810:10 amKSC - BOS
2 stops34h 25mMultiple Airlines
Deal found 10/27$1,023
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Thu 11/69:20 pmBOS - KSC
1 stop18h 05mMultiple Airlines
Mon 11/242:10 pmKSC - BOS
2 stops29h 45mMultiple Airlines
Deal found 10/27$1,040
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Thu 11/69:20 pmBOS - KSC
1 stop18h 05mMultiple Airlines
Thu 11/203:35 pmKSC - BOS
2 stops33h 20mMultiple Airlines
Deal found 10/27$1,043
This KAYAK deal was found by Cheapflights users on 10/27. 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
Fri 11/219:45 amKSC - BOS
1 stop16h 15mSWISS
Deal found 10/27$1,049

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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$554
(Mytrip)
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 October 28, 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

Mon 3/16

5:30 am-2:15 pm

2 stops27h 45m

Košice Barca

Tue 3/31

2:45 pm-9:52 am

2 stops49h 07m

$554

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 4/1

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Sun 4/5

2:45 pm-1:50 pm

1 stop29h 05m

$780

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 4/1

8:05 pm-2:00 pm

2 stops11h 55m

Košice Barca

Sun 4/5

2:45 pm-4:00 pm

2 stops55h 15m

$811

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 11/8

5:10 pm-10:20 am

1 stop11h 10m

Košice Barca

Mon 11/24

2:10 pm-1:55 pm

2 stops29h 45m

$930

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 11/8

5:10 pm-10:20 am

1 stop11h 10m

Košice Barca

Sun 11/23

5:10 pm-8:55 pm

2 stops33h 45m

$959

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 11/12

9:50 pm-9:00 am

1 stop29h 10m

Košice Barca

Fri 11/21

9:45 am-8:00 pm

1 stop16h 15m

$1,049

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 11/10

6:40 pm-1:55 pm

2 stops37h 15m

Košice Barca

Fri 11/21

9:45 am-8:00 pm

1 stop16h 15m

$1,069

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

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 October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 14h 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

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.