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Cheap flights from Boston to Košice from $811

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 11/15. 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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Find the cheapest flights from Boston to Košice

Cheap round-trip flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Austrian Airlines Logo
5:20 am - 1:30 pm
KSC
-
BOS
14h 10m
1 stop
$811Austrian Airlines
Sun, Nov 15 - Fri, Nov 27
Austrian Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Austrian Airlines Logo
5:20 am - 5:25 pm
KSC
-
BOS
18h 05m
2 stops
$821Austrian Airlines
Sun, Nov 15 - Fri, Nov 27
SWISS Logo
9:50 pm - 1:55 pm
BOS
-
KSC
10h 05m
1 stop
SWISS Logo
9:45 am - 8:20 pm
KSC
-
BOS
16h 35m
1 stop
$831SWISS
Tue, Nov 10 - Fri, Nov 20
Multiple Airlines Logo
9:50 pm - 6:50 pm
BOS
-
KSC
15h 00m
1 stop
Multiple Airlines Logo
9:45 am - 8:17 pm
KSC
-
BOS
16h 32m
2 stops
$834Multiple Airlines
Sun, Nov 8 - Fri, Nov 20
Multiple Airlines Logo
5:30 am - 6:50 pm
BOS
-
KSC
31h 20m
2 stops
Multiple Airlines Logo
9:45 am - 2:37 pm
KSC
-
BOS
34h 52m
2 stops
$838Multiple Airlines
Sun, Nov 8 - Fri, Nov 20
Austrian Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Austrian Airlines Logo
2:55 pm - 1:30 pm
KSC
-
BOS
28h 35m
1 stop
$840Austrian Airlines
Sun, Nov 15 - Thu, Nov 26
Multiple Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Multiple Airlines Logo
5:20 am - 4:57 pm
KSC
-
BOS
17h 37m
2 stops
$841Multiple Airlines
Sun, Nov 15 - Thu, Nov 26
Austrian Airlines Logo
1:30 pm - 2:15 pm
BOS
-
KSC
18h 45m
2 stops
Austrian Airlines Logo
5:20 am - 1:30 pm
KSC
-
BOS
14h 10m
1 stop
$844Austrian Airlines
Tue, Nov 10 - Tue, Nov 17
Multiple Airlines Logo
3:20 pm - 2:15 pm
BOS
-
KSC
16h 55m
2 stops
Multiple Airlines Logo
5:20 am - 4:57 pm
KSC
-
BOS
17h 37m
2 stops
$847Multiple Airlines
Mon, Nov 16 - Thu, Nov 26
Austrian Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Austrian Airlines Logo
2:55 pm - 5:25 pm
KSC
-
BOS
32h 30m
2 stops
$850Austrian Airlines
Sun, Nov 15 - Wed, Nov 25

Austrian Airlines flights from Boston to Košice

Our best Austrian Airlines deals on Boston to Košice flight tickets
Austrian Airlines
Nov 15
BOS6:55 pmBoston Logan Intl
13h 20m
1 stop
KSC2:15 pmKošice Barca
Nov 27
KSC5:20 amKošice Barca
14h 10m
1 stop
BOS1:30 pmBoston Logan Intl
$811
Austrian Airlines
Nov 15
BOS6:55 pmBoston Logan Intl
13h 20m
1 stop
KSC2:15 pmKošice Barca
Nov 27
KSC5:20 amKošice Barca
18h 05m
2 stops
BOS5:25 pmBoston Logan Intl
$821
Austrian Airlines
Nov 15
BOS6:55 pmBoston Logan Intl
13h 20m
1 stop
KSC2:15 pmKošice Barca
Nov 26
KSC2:55 pmKošice Barca
28h 35m
1 stop
BOS1:30 pmBoston Logan Intl
$840

SWISS flights from Boston to Košice

Our best SWISS deals on Boston to Košice flight tickets
SWISS
Nov 10
BOS9:50 pmBoston Logan Intl
10h 05m
1 stop
KSC1:55 pmKošice Barca
Nov 20
KSC9:45 amKošice Barca
16h 35m
1 stop
BOS8:20 pmBoston Logan Intl
$831
SWISS
Jul 28
BOS5:20 pmBoston Logan Intl
14h 45m
1 stop
KSC2:05 pmKošice Barca
Sep 2
KSC2:50 pmKošice Barca
11h 05m
1 stop
BOS7:55 pmBoston Logan Intl
$976

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 May 20, 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

Cheapest round-trip

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Fri 11/27

5:20 am-1:30 pm

1 stop14h 10m

$811

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Fri 11/27

5:20 am-5:25 pm

2 stops18h 05m

$821
Quickest round-trip

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/10

9:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

Fri 11/20

9:45 am-8:20 pm

1 stop16h 35m

$831

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/8

9:50 pm-6:50 pm

1 stop15h 00m

Košice Barca

Fri 11/20

9:45 am-8:17 pm

2 stops16h 32m

$834

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/8

5:30 am-6:50 pm

2 stops31h 20m

Košice Barca

Fri 11/20

9:45 am-2:37 pm

2 stops34h 52m

$838

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Thu 11/26

2:55 pm-1:30 pm

1 stop28h 35m

$840

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Thu 11/26

5:20 am-4:57 pm

2 stops17h 37m

$841

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/10

1:30 pm-2:15 pm

2 stops18h 45m

Košice Barca

Tue 11/17

5:20 am-1:30 pm

1 stop14h 10m

$844

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 11/16

3:20 pm-2:15 pm

2 stops16h 55m

Košice Barca

Thu 11/26

5:20 am-4:57 pm

2 stops17h 37m

$847

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Wed 11/25

2:55 pm-5:25 pm

2 stops32h 30m

$850

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

13h 20m

Direct flights

None
The fastest flight from Boston to Košice takes 13h 20m
There are no direct flights from Boston to Košice. There are no popular flight routes from Boston to Košice.
Search flight deals

Frequently asked questions about flying from Boston to Košice

  • 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 13h 20m, 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.

Frequently asked questions about flying from Boston to Košice

  • 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?

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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