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Cheap flights from Boston to Košice from $299

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Košice departing on 3/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:10 pm - 9:35 amBOS-KSC
32h 25m1 stop
Multiple Airlines Logo
10:05 am - 2:35 pmKSC-BOS
34h 30m2 stops
$828Multiple Airlines
Find Deal
Sun, Nov 2 - Sat, Nov 8
Austrian Airlines Logo
6:25 pm - 2:15 pmBOS-KSC
13h 50m1 stop
Austrian Airlines Logo
2:55 pm - 2:05 pmKSC-BOS
29h 10m1 stop
$846Austrian Airlines
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Sun, Nov 2 - Sat, Nov 8
Lufthansa Logo
8:40 pm - 2:15 pmBOS-KSC
11h 35m2 stops
Lufthansa Logo
2:55 pm - 6:35 pmKSC-BOS
33h 40m2 stops
$880Lufthansa
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Sun, Nov 2 - Sat, Nov 8
Multiple Airlines Logo
11:55 pm - 11:15 pmBOS-KSC
17h 20m2 stops
Multiple Airlines Logo
5:15 am - 8:10 pmKSC-BOS
20h 55m3 stops
$1,119Multiple Airlines
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Sun, Nov 2 - Sat, Nov 8
Multiple Airlines Logo
5:30 am - 3:45 pmBOS-KSC
28h 15m3 stops
Multiple Airlines Logo
5:15 am - 8:10 pmKSC-BOS
20h 55m3 stops
$1,126Multiple Airlines
Find Deal
Sun, Nov 2 - Sat, Nov 8

momondo 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, momondo users made 832,500 searches. Data last updated October 1, 2025.
Use the filters below to find and compare flights from Boston to Košice that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/2

7:10 pm-9:35 am

1 stop32h 25m

Košice Barca

Sat 11/8

10:05 am-2:35 pm

2 stops34h 30m

$828

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/2

6:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

Sat 11/8

2:55 pm-2:05 pm

1 stop29h 10m

$846

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/2

8:40 pm-2:15 pm

2 stops11h 35m

Košice Barca

Sat 11/8

2:55 pm-6:35 pm

2 stops33h 40m

$880

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/2

11:55 pm-11:15 pm

2 stops17h 20m

Košice Barca

Sat 11/8

5:15 am-8:10 pm

3 stops20h 55m

$1,119

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/2

5:30 am-3:45 pm

3 stops28h 15m

Košice Barca

Sat 11/8

5:15 am-8:10 pm

3 stops20h 55m

$1,126

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 3/15

8:50 pm-9:35 am

2 stops31h 45m

$299

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 3/15

11:45 pm-9:35 am

3 stops28h 50m

$350

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 3/15

11:10 pm-6:50 pm

1 stop14h 40m

$531

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Boston to Košice

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Košice?

According to our data, Friday is the cheapest day to fly to Košice from Boston. The lowest ticket price found for a Friday departure recently was $725. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Košice for around $1,104.

What is the cheapest time of day to depart on your flight to Košice?

Flying to Košice from Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $824 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Košice is in the afternoon when prices are around $1,004.

When to book flights from Boston to Košice

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Košice according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Košice (BOS to KSC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Košice

Direct flights

None
There are no direct flights from Boston to Košice. There are no popular flight routes from Boston to Košice.
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  • How far is Boston Logan Intl to Košice Barca by plane?

    The distance between Boston Logan Intl and Košice Barca is about 4203.7 mi. Flights usually cover this in 11h 35m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Košice Barca Airport?

    Prices for flights from Boston Logan Intl Airport to Košice Barca Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Boston Logan Intl Airport to Košice Barca Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Košice Barca Airport.

  • What documentation or ID do you need to fly to Košice Barca Airport?

    The necessary travel and health documents for your Košice Barca Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Košice?

Book flights to Košice if you plan to visit one of these locations
Prešov

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Košice?

Finding the right flight to Košice from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Košice quick and easy, saving you time and money.

Can I find flights from Boston to Košice with flexible booking policies on momondo?

All flight searches from Boston to Košice on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Boston to Košice?

momondo helps you find the best flight between Boston and Košice by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to Košice right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Košice now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Košice and let you know when they change.

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