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Cheap flights from Boston to Slovakia from $526

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 6/20. 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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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.
Multiple Airlines Logo
2:15 pm - 2:15 pm
BOS
-
KSC
19h 00m
2 stops
Multiple Airlines Logo
2:50 pm - 7:55 pm
KSC
-
BOS
11h 05m
1 stop
$532Multiple Airlines
Tue, Mar 24 - Wed, Apr 29
Multiple Airlines Logo
7:25 pm - 2:15 pm
BOS
-
KSC
13h 50m
1 stop
Multiple Airlines Logo
2:50 pm - 7:55 pm
KSC
-
BOS
11h 05m
1 stop
$547Multiple Airlines
Tue, Mar 24 - Wed, Apr 29
Multiple Airlines Logo
10:15 am - 1:55 pm
BOS
-
KSC
22h 40m
2 stops
Multiple Airlines Logo
2:50 pm - 9:45 am
KSC
-
BOS
48h 55m
2 stops
$559Multiple Airlines
Tue, Mar 24 - Wed, Apr 29
Multiple Airlines Logo
5:30 am - 1:55 pm
BOS
-
KSC
27h 25m
2 stops
Multiple Airlines Logo
2:50 pm - 3:30 pm
KSC
-
BOS
30h 40m
1 stop
$560Multiple Airlines
Tue, Mar 24 - Wed, Apr 29
SWISS Logo
10:50 pm - 1:55 pm
BOS
-
KSC
10h 05m
1 stop
SWISS Logo
2:50 pm - 7:55 pm
KSC
-
BOS
11h 05m
1 stop
$570SWISS
Tue, Mar 24 - Wed, Apr 29
Multiple Airlines Logo
8:50 pm - 7:00 pm
BOS
-
BTS
16h 10m
2 stops
Multiple Airlines Logo
9:10 am - 9:05 pm
BTS
-
BOS
17h 55m
1 stop
$607Multiple Airlines
Sun, May 17 - Fri, May 22
Multiple Airlines Logo
6:55 pm - 2:05 pm
BOS
-
KSC
37h 10m
2 stops
Multiple Airlines Logo
7:40 pm - 3:30 pm
KSC
-
BOS
25h 50m
1 stop
$718Multiple Airlines
Mon, May 4 - Mon, Jun 1
SWISS Logo
9:40 pm - 6:55 pm
BOS
-
KSC
15h 15m
1 stop
SWISS Logo
2:50 pm - 3:30 pm
KSC
-
BOS
30h 40m
1 stop
$850SWISS
Sun, Jul 19 - Wed, Aug 12
Lufthansa Logo
8:05 pm - 11:30 pm
BOS
-
KSC
21h 25m
2 stops
Lufthansa Logo
5:25 am - 5:40 pm
KSC
-
BOS
18h 15m
2 stops
$918Lufthansa
Sun, Jul 19 - Thu, Aug 13
Lufthansa Logo
8:05 pm - 2:00 pm
BOS
-
KSC
35h 55m
2 stops
Lufthansa Logo
2:45 pm - 3:40 pm
KSC
-
BOS
30h 55m
2 stops
$926Lufthansa
Sun, Jul 19 - Wed, Aug 12

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Mar 24
BOS10:50 pmBoston Logan Intl
10h 05m
1 stop
KSC1:55 pmKošice Barca
Apr 29
KSC2:50 pmKošice Barca
11h 05m
1 stop
BOS7:55 pmBoston Logan Intl
$570
SWISS
Jul 19
BOS9:40 pmBoston Logan Intl
15h 15m
1 stop
KSC6:55 pmKošice Barca
Aug 12
KSC2:50 pmKošice Barca
30h 40m
1 stop
BOS3:30 pmBoston Logan Intl
$850
SWISS
Jul 20
BOS9:40 pmBoston Logan Intl
14h 45m
1 stop
KSC6:25 pmKošice Barca
Aug 10
KSC7:40 pmKošice Barca
25h 50m
1 stop
BOS3:30 pmBoston Logan Intl
$1,060

Lufthansa flights from Boston to Slovakia

Our best Lufthansa deals on Boston to Slovakia flight tickets
Lufthansa
Jul 19
BOS8:05 pmBoston Logan Intl
21h 25m
2 stops
KSC11:30 pmKošice Barca
Aug 13
KSC5:25 amKošice Barca
18h 15m
2 stops
BOS5:40 pmBoston Logan Intl
$918
Lufthansa
Jul 19
BOS8:05 pmBoston Logan Intl
35h 55m
2 stops
KSC2:00 pmKošice Barca
Aug 12
KSC2:45 pmKošice Barca
30h 55m
2 stops
BOS3:40 pmBoston Logan Intl
$926
Lufthansa
Jul 19
BOS8:05 pmBoston Logan Intl
21h 25m
2 stops
KSC11:30 pmKošice Barca
Aug 11
KSC2:45 pmKošice Barca
54h 55m
2 stops
BOS3:40 pmBoston Logan Intl
$946

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 January 21, 2026.
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 3/24

2:15 pm-2:15 pm

2 stops19h 00m

Košice Barca

Wed 4/29

2:50 pm-7:55 pm

1 stop11h 05m

$532

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 3/24

7:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

Wed 4/29

2:50 pm-7:55 pm

1 stop11h 05m

$547

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 3/24

10:15 am-1:55 pm

2 stops22h 40m

Košice Barca

Wed 4/29

2:50 pm-9:45 am

2 stops48h 55m

$559

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 3/24

5:30 am-1:55 pm

2 stops27h 25m

Košice Barca

Wed 4/29

2:50 pm-3:30 pm

1 stop30h 40m

$560

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 3/24

10:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

Wed 4/29

2:50 pm-7:55 pm

1 stop11h 05m

$570

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Sun 5/17

8:50 pm-7:00 pm

2 stops16h 10m

Bratislava - M. R. Štefánik

Fri 5/22

9:10 am-9:05 pm

1 stop17h 55m

$607

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 5/4

6:55 pm-2:05 pm

2 stops37h 10m

Košice Barca

Mon 6/1

7:40 pm-3:30 pm

1 stop25h 50m

$718

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 7/19

9:40 pm-6:55 pm

1 stop15h 15m

Košice Barca

Wed 8/12

2:50 pm-3:30 pm

1 stop30h 40m

$850

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 7/19

8:05 pm-11:30 pm

2 stops21h 25m

Košice Barca

Thu 8/13

5:25 am-5:40 pm

2 stops18h 15m

$918

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 7/19

8:05 pm-2:00 pm

2 stops35h 55m

Košice Barca

Wed 8/12

2:45 pm-3:40 pm

2 stops30h 55m

$926

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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 40m

Direct flights

None
The fastest flight from Boston to Slovakia takes 12h 40m
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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Find better results for your trip to Slovakia

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