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Cheap flights from Boston to Slovakia from $268

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 Slovakia departing on 2/28. 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
9:40 pm - 1:55 pm
BOS
-
KSC
10h 15m1 stop
SWISS Logo
7:55 pm - 3:30 pm
KSC
-
BOS
25h 35m1 stop
$579SWISS
Tue, Apr 14 - Mon, Apr 27
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
$591Austrian 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 - 6:19 pm
KSC
-
BOS
33h 34m2 stops
$601Austrian Airlines
Tue, Apr 14 - Tue, Apr 28
Multiple Airlines Logo
11:40 pm - 5:35 pm
BOS
-
BTS
12h 55m1 stop
Multiple Airlines Logo
10:55 am - 9:05 pm
BTS
-
BOS
16h 10m1 stop
$628Multiple Airlines
Thu, Mar 19 - Mon, Apr 13
Multiple Airlines Logo
11:40 pm - 5:35 pm
BOS
-
BTS
12h 55m1 stop
Multiple Airlines Logo
8:35 pm - 9:05 pm
BTS
-
BOS
30h 30m2 stops
$640Multiple Airlines
Thu, Mar 19 - Mon, Apr 13
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
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
$650Lufthansa
Tue, Apr 14 - Thu, Apr 23
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
$652Multiple 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
$659Multiple 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
$678Lufthansa
Tue, Apr 14 - Sun, Apr 26

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Apr 14
BOS9:40 pmBoston Logan Intl
10h 15m
1 stop
KSC1:55 pmKošice Barca
Apr 27
KSC7:55 pmKošice Barca
25h 35m
1 stop
BOS3:30 pmBoston Logan Intl
$579
Find similar
SWISS
Apr 14
BOS9:40 pmBoston Logan Intl
10h 15m
1 stop
KSC1:55 pmKošice Barca
Apr 24
KSC9:40 amKošice Barca
11h 50m
1 stop
BOS3:30 pmBoston Logan Intl
$793
Find similar
SWISS
Apr 16
BOS5:05 pmBoston Logan Intl
10h 10m
1 stop
KSC9:15 amKošice Barca
Apr 27
KSC7:40 pmKošice Barca
25h 50m
1 stop
BOS3:30 pmBoston Logan Intl
$822
Find similar

Austrian Airlines flights from Boston to Slovakia

Our best Austrian Airlines deals on Boston to Slovakia flight tickets
Austrian Airlines
Apr 14
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KSC2:00 pmKošice Barca
Apr 28
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$591
Find similar
Austrian Airlines
Apr 14
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KSC2:00 pmKošice Barca
Apr 28
KSC2:45 pmKošice Barca
33h 34m
2 stops
BOS6:19 pmBoston Logan Intl
$601
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
$695
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 18, 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

9:40 pm-1:55 pm

1 stop10h 15m

Košice Barca

Mon 4/27

7:55 pm-3:30 pm

1 stop25h 35m

$579

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

$591

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-6:19 pm

2 stops33h 34m

$601

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Thu 3/19

11:40 pm-5:35 pm

1 stop12h 55m

Bratislava - M. R. Štefánik

Mon 4/13

10:55 am-9:05 pm

1 stop16h 10m

$628

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Thu 3/19

11:40 pm-5:35 pm

1 stop12h 55m

Bratislava - M. R. Štefánik

Mon 4/13

8:35 pm-9:05 pm

2 stops30h 30m

$640

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

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

$650

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

$652

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

$659

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

$678

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Slovakia from

How to get the cheapest flight ticket from Boston to Slovakia

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 airline that flies from Boston Logan Intl to Slovakia?

Austrian Airlines, Lufthansa, and LOT are the most popular carriers operating from Boston Logan Intl to Slovakia

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

13h 05m

Direct flights

None
The fastest flight from Boston to Slovakia takes 13h 05m
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.

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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