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Cheap flights from Boston to Slovakia from $568

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 Slovakia 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.
1 adult
0 bags

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Find the cheapest flights from Boston to Slovakia

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
5:05 pm - 1:55 pm
BOS
-
KSC
14h 50m1 stop
SWISS Logo
2:45 pm - 7:55 pm
KSC
-
BOS
11h 10m1 stop
$568SWISS
Tue, Apr 14 - Wed, Apr 29
SWISS Logo
5:05 pm - 1:55 pm
BOS
-
KSC
14h 50m1 stop
SWISS Logo
2:45 pm - 3:30 pm
KSC
-
BOS
30h 45m1 stop
$569SWISS
Tue, Apr 14 - Wed, Apr 29
Austrian Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KSC
14h 50m1 stop
Austrian Airlines Logo
2:45 pm - 1:50 pm
KSC
-
BOS
29h 05m1 stop
$580Austrian Airlines
Tue, Apr 14 - Tue, Apr 28
Austrian Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KSC
14h 50m1 stop
Austrian Airlines Logo
2:45 pm - 7:06 pm
KSC
-
BOS
34h 21m2 stops
$590Austrian Airlines
Tue, Apr 14 - Tue, Apr 28
Lufthansa Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Lufthansa Logo
2:45 pm - 5:40 pm
KSC
-
BOS
32h 55m2 stops
$639Lufthansa
Tue, Apr 14 - Tue, Apr 28
Multiple Airlines Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Multiple Airlines Logo
7:55 pm - 3:30 pm
KSC
-
BOS
25h 35m1 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
2:45 pm - 6:19 pm
KSC
-
BOS
33h 34m2 stops
$649Multiple Airlines
Sat, Apr 18 - Mon, Apr 27
Lufthansa Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Lufthansa Logo
2:45 pm - 3:55 pm
KSC
-
BOS
55h 10m2 stops
$667Lufthansa
Tue, Apr 14 - Sun, Apr 26
Lufthansa Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m2 stops
Lufthansa Logo
2:45 pm - 3:55 pm
KSC
-
BOS
55h 10m2 stops
$668Lufthansa
Tue, Apr 14 - Sun, Apr 26
Multiple Airlines Logo
9:25 pm - 6:00 pm
BOS
-
KSC
14h 35m1 stop
Multiple Airlines Logo
8:40 pm - 9:05 pm
KSC
-
BOS
30h 25m2 stops
$684Multiple Airlines
Tue, Apr 14 - Tue, Apr 28

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Apr 14
BOS5:05 pmBoston Logan Intl
14h 50m
1 stop
KSC1:55 pmKošice Barca
Apr 29
KSC2:45 pmKošice Barca
11h 10m
1 stop
BOS7:55 pmBoston Logan Intl
$568
Find similar
SWISS
Apr 14
BOS5:05 pmBoston Logan Intl
14h 50m
1 stop
KSC1:55 pmKošice Barca
Apr 29
KSC2:45 pmKošice Barca
30h 45m
1 stop
BOS3:30 pmBoston Logan Intl
$569
Find similar
SWISS
Apr 14
BOS5:05 pmBoston Logan Intl
14h 50m
1 stop
KSC1:55 pmKošice Barca
Apr 24
KSC9:40 amKošice Barca
11h 50m
1 stop
BOS3:30 pmBoston Logan Intl
$782
Find similar

Lufthansa flights from Boston to Slovakia

Our best Lufthansa deals on Boston to Slovakia flight tickets
Lufthansa
Apr 14
BOS8:05 pmBoston Logan Intl
21h 25m
2 stops
KSC11:30 pmKošice Barca
Apr 27
KSC2:45 pmKošice Barca
32h 55m
2 stops
BOS5:40 pmBoston Logan Intl
$639
Find similar
Lufthansa
Apr 14
BOS8:05 pmBoston Logan Intl
21h 25m
2 stops
KSC11:30 pmKošice Barca
Apr 26
KSC2:45 pmKošice Barca
55h 10m
2 stops
BOS3:55 pmBoston Logan Intl
$667
Find similar
Lufthansa
Apr 14
BOS8:05 pmBoston Logan Intl
21h 25m
2 stops
KSC11:30 pmKošice Barca
Apr 26
KSC2:45 pmKošice Barca
55h 10m
2 stops
BOS3:55 pmBoston Logan Intl
$668
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Slovakia 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 December 10, 2025.
Use the filters below to find and compare flights from Boston to Slovakia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

5:05 pm-1:55 pm

1 stop14h 50m

Košice Barca

Wed 4/29

2:45 pm-7:55 pm

1 stop11h 10m

$568

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

5:05 pm-1:55 pm

1 stop14h 50m

Košice Barca

Wed 4/29

2:45 pm-3:30 pm

1 stop30h 45m

$569

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Tue 4/28

2:45 pm-1:50 pm

1 stop29h 05m

$580

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Tue 4/28

2:45 pm-7:06 pm

2 stops34h 21m

$590

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Tue 4/28

2:45 pm-5:40 pm

2 stops32h 55m

$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

7:55 pm-3:30 pm

1 stop25h 35m

$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

2:45 pm-6:19 pm

2 stops33h 34m

$649

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Sun 4/26

2:45 pm-3:55 pm

2 stops55h 10m

$667

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Sun 4/26

2:45 pm-3:55 pm

2 stops55h 10m

$668

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 4/14

9:25 pm-6:00 pm

1 stop14h 35m

Košice Barca

Tue 4/28

8:40 pm-9:05 pm

2 stops30h 25m

$684

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Boston to Slovakia flight deals and tips

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

Fastest flight time

12h 35m

Direct flights

None
The fastest flight from Boston to Slovakia takes 12h 35m
There are no direct flights from Boston to Slovakia. There are no popular flight routes from Boston to Slovakia.
Search flight deals

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

    Prices for flights from Boston Logan Intl Airport to Slovakia are updated daily.

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

    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 Slovakia.

  • What documentation or ID do you need to fly to Slovakia?

    The necessary travel and health documents for your Slovakia 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 Slovakia?

    Search flight deals from Boston to Slovakia. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Boston to Slovakia 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.

Why use momondo?

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

Finding the right flight to Slovakia 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 Slovakia quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Slovakia from Boston with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Slovakia from Boston.

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

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

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