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Cheap flights from Boston to Košice from $570

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Košice departing on 4/14. 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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Find the cheapest flights from Boston to Košice

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
9:40 pm - 2:05 pm
BOS
-
KSC
10h 25m1 stop
SWISS Logo
2:50 pm - 3:30 pm
KSC
-
BOS
30h 40m1 stop
$570SWISS
Tue, Apr 14 - Wed, Apr 29
Austrian Airlines Logo
5:10 pm - 11:30 pm
BOS
-
KSC
24h 20m1 stop
Austrian Airlines Logo
2:45 pm - 1:50 pm
KSC
-
BOS
29h 05m1 stop
$579Austrian Airlines
Tue, Apr 14 - Tue, Apr 28
Austrian Airlines Logo
11:17 am - 2:00 pm
BOS
-
KSC
20h 43m2 stops
Austrian Airlines Logo
2:45 pm - 1:50 pm
KSC
-
BOS
29h 05m1 stop
$584Austrian Airlines
Mon, Apr 20 - Tue, Apr 28
Austrian Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KSC
14h 50m1 stop
Austrian Airlines Logo
2:45 pm - 6:19 pm
KSC
-
BOS
33h 34m2 stops
$589Austrian Airlines
Tue, Apr 14 - Mon, Apr 27
Austrian Airlines Logo
11:17 am - 2:00 pm
BOS
-
KSC
20h 43m2 stops
Austrian Airlines Logo
2:45 pm - 6:19 pm
KSC
-
BOS
33h 34m2 stops
$594Austrian Airlines
Mon, Apr 20 - Mon, Apr 27
Lufthansa Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Lufthansa Logo
5:25 am - 5:40 pm
KSC
-
BOS
18h 15m2 stops
$638Lufthansa
Tue, Apr 14 - Thu, Apr 23
Lufthansa Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Lufthansa Logo
5:25 am - 5:40 pm
KSC
-
BOS
18h 15m2 stops
$639Lufthansa
Tue, Apr 14 - Thu, Apr 23
Multiple Airlines Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Multiple Airlines Logo
7:40 pm - 7:55 pm
KSC
-
BOS
30h 15m1 stop
$641Multiple Airlines
Sat, Apr 18 - Mon, Apr 27
Multiple Airlines Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Multiple Airlines Logo
7:40 pm - 3:30 pm
KSC
-
BOS
25h 50m1 stop
$642Multiple Airlines
Sat, Apr 18 - Mon, Apr 27
Austrian Airlines Logo
11:17 am - 2:00 pm
BOS
-
KSC
20h 43m2 stops
Austrian Airlines Logo
2:45 pm - 6:19 pm
KSC
-
BOS
33h 34m2 stops
$644Austrian Airlines
Mon, Apr 20 - Sun, Apr 26

SWISS flights from Boston to Košice

Our best SWISS deals on Boston to Košice flight tickets
SWISS
Apr 14
BOS5:05 pmBoston Logan Intl
15h 00m
1 stop
KSC2:05 pmKošice Barca
Apr 29
KSC2:50 pmKošice Barca
30h 40m
1 stop
BOS3:30 pmBoston Logan Intl
$571
Find similar
SWISS
Apr 14
BOS9:40 pmBoston Logan Intl
10h 25m
1 stop
KSC2:05 pmKošice Barca
Apr 24
KSC10:00 amKošice Barca
11h 30m
1 stop
BOS3:30 pmBoston Logan Intl
$671
Find similar
SWISS
Feb 8
BOS10:10 pmBoston Logan Intl
14h 40m
1 stop
KSC6:50 pmKošice Barca
Feb 16
KSC7:40 pmKošice Barca
30h 40m
1 stop
BOS8:20 pmBoston Logan Intl
$820
Find similar

Austrian Airlines flights from Boston to Košice

Our best Austrian Airlines deals on Boston to Košice flight tickets
Austrian Airlines
Apr 14
BOS5:10 pmBoston Logan Intl
24h 20m
1 stop
KSC11:30 pmKošice Barca
Apr 28
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$580
Find similar
Austrian Airlines
Apr 20
BOS11:17 amBoston Logan Intl
20h 43m
2 stops
KSC2:00 pmKošice Barca
Apr 28
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$585
Find similar
Austrian Airlines
Apr 14
BOS5:10 pmBoston Logan Intl
24h 20m
1 stop
KSC11:30 pmKošice Barca
Apr 23
KSC5:25 amKošice Barca
18h 54m
2 stops
BOS6:19 pmBoston Logan Intl
$590
Find similar

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 January 1, 2026.
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

Tue 4/14

9:40 pm-2:05 pm

1 stop10h 25m

Košice Barca

Wed 4/29

2:50 pm-3:30 pm

1 stop30h 40m

$570

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

5:10 pm-11:30 pm

1 stop24h 20m

Košice Barca

Tue 4/28

2:45 pm-1:50 pm

1 stop29h 05m

$579

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 4/20

11:17 am-2:00 pm

2 stops20h 43m

Košice Barca

Tue 4/28

2:45 pm-1:50 pm

1 stop29h 05m

$584

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Mon 4/27

2:45 pm-6:19 pm

2 stops33h 34m

$589

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 4/20

11:17 am-2:00 pm

2 stops20h 43m

Košice Barca

Mon 4/27

2:45 pm-6:19 pm

2 stops33h 34m

$594

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Thu 4/23

5:25 am-5:40 pm

2 stops18h 15m

$638

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Thu 4/23

5:25 am-5:40 pm

2 stops18h 15m

$639

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 4/18

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Mon 4/27

7:40 pm-7:55 pm

1 stop30h 15m

$641

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 4/18

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Mon 4/27

7:40 pm-3:30 pm

1 stop25h 50m

$642

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 4/20

11:17 am-2:00 pm

2 stops20h 43m

Košice Barca

Sun 4/26

2:45 pm-6:19 pm

2 stops33h 34m

$644

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Fastest flight time

17h 55m

Direct flights

None
The fastest flight from Boston to Košice takes 17h 55m
There are no direct flights from Boston to Košice. There are no popular flight routes from Boston to Košice.
Search flight deals

  • 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 17h 55m, 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.

  • How do I get Price Alerts for flights from Boston to Košice?

    Price Alerts will notify you by email when the price for flights to Košice from Boston decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Boston to Košice with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near Košice?

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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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