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Cheap flights from Boston to Slovakia from $647

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 4/27. 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
5:40 pm - 2:25 pm
BOS
-
BTS
14h 45m
2 stops
Multiple Airlines Logo
10:35 am - 3:35 pm
BTS
-
BOS
35h 00m
2 stops
$647Multiple Airlines
Mo, Apr 27 - Sa, Mai 2
Multiple Airlines Logo
10:20 pm - 9:15 am
BOS
-
BTS
29h 55m
2 stops
Multiple Airlines Logo
9:10 am - 9:05 pm
BTS
-
BOS
17h 55m
1 stop
$661Multiple Airlines
Do, Mrz 26 - Di, Mrz 31
Multiple Airlines Logo
10:20 pm - 12:25 pm
BOS
-
BTS
33h 05m
1 stop
Multiple Airlines Logo
9:10 am - 9:05 pm
BTS
-
BOS
17h 55m
1 stop
$675Multiple Airlines
Do, Mrz 26 - Di, Mrz 31
Multiple Airlines Logo
10:50 pm - 2:55 pm
BOS
-
BTS
34h 05m
1 stop
Multiple Airlines Logo
9:10 am - 9:05 pm
BTS
-
BOS
17h 55m
1 stop
$696Multiple Airlines
Mo, Apr 27 - Sa, Mai 2
SWISS Logo
9:40 pm - 2:05 pm
BOS
-
KSC
10h 25m
1 stop
SWISS Logo
10:00 am - 7:55 pm
KSC
-
BOS
15h 55m
1 stop
$712SWISS
Di, Jul 28 - Fr, Aug 28
Austrian Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KSC
14h 50m
1 stop
Austrian Airlines Logo
2:45 pm - 1:50 pm
KSC
-
BOS
29h 05m
1 stop
$769Austrian Airlines
Do, Jul 30 - Di, Sep 1
SWISS Logo
5:20 pm - 2:05 pm
BOS
-
KSC
14h 45m
1 stop
SWISS Logo
9:55 am - 7:55 pm
KSC
-
BOS
16h 00m
1 stop
$772SWISS
Di, Jul 28 - Sa, Aug 29
Austrian Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KSC
14h 50m
1 stop
Austrian Airlines Logo
5:25 am - 4:38 pm
KSC
-
BOS
17h 13m
2 stops
$774Austrian Airlines
Do, Jul 30 - Di, Sep 1
Lufthansa Logo
8:05 pm - 2:00 pm
BOS
-
KSC
11h 55m
2 stops
Lufthansa Logo
5:25 am - 8:10 pm
KSC
-
BOS
20h 45m
2 stops
$789Lufthansa
Di, Jul 28 - Do, Sep 3
Lufthansa Logo
8:05 pm - 11:20 pm
BOS
-
KSC
21h 15m
2 stops
Lufthansa Logo
2:45 pm - 3:40 pm
KSC
-
BOS
54h 55m
2 stops
$810Lufthansa
Di, Jul 28 - So, Aug 30

Austrian Airlines flights from Boston to Slovakia

Our best Austrian Airlines deals on Boston to Slovakia flight tickets
Austrian Airlines
Jul 30
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KSC2:00 pmKošice Barca
Sep 1
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$769
Austrian Airlines
Jul 30
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KSC2:00 pmKošice Barca
Sep 1
KSC5:25 amKošice Barca
17h 13m
2 stops
BOS4:38 pmBoston Logan Intl
$774
Austrian Airlines
Aug 1
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KSC2:00 pmKošice Barca
Sep 1
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$829

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Jul 28
BOS9:40 pmBoston Logan Intl
10h 25m
1 stop
KSC2:05 pmKošice Barca
Aug 28
KSC10:00 amKošice Barca
15h 55m
1 stop
BOS7:55 pmBoston Logan Intl
$712
SWISS
Jul 28
BOS5:20 pmBoston Logan Intl
14h 45m
1 stop
KSC2:05 pmKošice Barca
Aug 29
KSC9:55 amKošice Barca
16h 00m
1 stop
BOS7:55 pmBoston Logan Intl
$772
SWISS
Jul 30
BOS5:20 pmBoston Logan Intl
9h 55m
1 stop
KSC9:15 amKošice Barca
Aug 31
KSC7:40 pmKošice Barca
30h 15m
1 stop
BOS7:55 pmBoston Logan Intl
$821

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 Februar 19, 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

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Mo 4/27

5:40 pm-2:25 pm

2 stops14h 45m

Bratislava - M. R. Štefánik

Sa 5/2

10:35 am-3:35 pm

2 stops35h 00m

$647

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Do 3/26

10:20 pm-9:15 am

2 stops29h 55m

Bratislava - M. R. Štefánik

Di 3/31

9:10 am-9:05 pm

1 stop17h 55m

$661

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Do 3/26

10:20 pm-12:25 pm

1 stop33h 05m

Bratislava - M. R. Štefánik

Di 3/31

9:10 am-9:05 pm

1 stop17h 55m

$675

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Mo 4/27

10:50 pm-2:55 pm

1 stop34h 05m

Bratislava - M. R. Štefánik

Sa 5/2

9:10 am-9:05 pm

1 stop17h 55m

$696

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Di 7/28

9:40 pm-2:05 pm

1 stop10h 25m

Košice Barca

Fr 8/28

10:00 am-7:55 pm

1 stop15h 55m

$712

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Do 7/30

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Di 9/1

2:45 pm-1:50 pm

1 stop29h 05m

$769

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Di 7/28

5:20 pm-2:05 pm

1 stop14h 45m

Košice Barca

Sa 8/29

9:55 am-7:55 pm

1 stop16h 00m

$772

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Do 7/30

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Di 9/1

5:25 am-4:38 pm

2 stops17h 13m

$774

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Di 7/28

8:05 pm-2:00 pm

2 stops11h 55m

Košice Barca

Do 9/3

5:25 am-8:10 pm

2 stops20h 45m

$789

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Di 7/28

8:05 pm-11:20 pm

2 stops21h 15m

Košice Barca

So 8/30

2:45 pm-3:40 pm

2 stops54h 55m

$810

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 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?

Lufthansa is the most popular carrier 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

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.

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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