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$688+ Cheap flights from Košice (KSC) to Boston (BOS)

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
KSC — BOS
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Košice to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Košice (KSC) to Boston (BOS). 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 30, 2025.

Round-trip from

$688
(Austrian Airlines)
From Košice Barca to Boston Logan Intl
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Cheapest flights from Košice to Boston
Explore the most affordable flight options available from Košice to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Austrian Airlines deal was found by Cheapflights users on 10/30. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:20 amKSC - BOS
1 stop14h 45mAustrian Airlines
Tue 11/182:21 pmBOS - KSC
2 stops17h 54mAustrian Airlines
Deal found 10/30$688
This Austrian Airlines deal was found by Cheapflights users on 10/29. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:55 pmKSC - BOS
1 stop29h 10mAustrian Airlines
Mon 11/172:21 pmBOS - KSC
2 stops17h 54mAustrian Airlines
Deal found 10/29$693
This Mytrip deal was found by Cheapflights users on 10/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:20 amKSC - BOS
3 stops16h 30mMultiple Airlines
Tue 11/185:35 pmBOS - KSC
3 stops23h 40mMultiple Airlines
Deal found 10/30$1,176

Cheapflights Fare Finder

 
Customize your flight search to find flights from Košice to Boston 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 30, 2025.
Use the filters below to find and compare flights from Košice to Boston that are best for you.

Fly from

Košice

Fly to

Boston

Route

Depart

Return

Price

KošiceBoston

KSC - BOS

KSCBOS

Košice Barca

Fri 11/14

5:20 am-2:05 pm

1 stop14h 45m

Boston Logan Intl

Tue 11/18

2:21 pm-2:15 pm

2 stops17h 54m

$688

KošiceBoston

KSC - BOS

KSCBOS

Košice Barca

Thu 11/13

2:55 pm-2:05 pm

1 stop29h 10m

Boston Logan Intl

Mon 11/17

2:21 pm-2:15 pm

2 stops17h 54m

$693

KošiceBoston

KSC - BOS

KSCBOS

Košice Barca

Fri 11/14

5:20 am-3:50 pm

3 stops16h 30m

Boston Logan Intl

Tue 11/18

5:35 pm-11:15 pm

3 stops23h 40m

$1,176

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Best time to book a flight from Košice to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Košice 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.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated October 30, 2025.
See what other customers who have flown with SWISS from Košice to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,775 reviews

Comfort

7.4

Boarding

7.7

Food

7.1

Overall

7.5

Entertainment

6.8

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
SWISS
7.5
Good
1,775 reviews
SWISS
7.5
Good
1,775 reviews

Comfort

7.4

Boarding

7.7

Food

7.1

Overall

7.5

Entertainment

6.8

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Related info for your journey

Find useful and relevant information for your journey from Košice to Boston. 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 Košice to Boston?

    Airlines like Austrian Airlines fly from Košice to Boston in about 14h 45m. The time it takes to get you to your destination can typically vary by up to . The distance from Košice to Boston is about 4203 mi.

  • Can I find deals for flights from Košice to Boston that include hotel bookings?

    Yes. In addition to deals on Košice to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Košice to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Košice to Boston.

  • Can I find deals for business class flights from Košice to Boston?

    Yes. Cheapflights offers flight deals from Košice to Boston 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

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Peabody
Quincy
York Beach
Warwick
Swansea
Old Orchard Beach
Brockton
Waltham
Chelsea

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Alternative routes for Košice to Boston

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

Top airline flying from Košice to Boston

Discover the top airline that operate flights from Košice to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$555Average$707FlexibilityNo cancel feeOn-time79%

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