Cheap flights from Boston to Slovakia from $537

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 11/13. 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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Cheap round-trip flights

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6:05 pm - 3:25 pmBOS-BTS
15h 20m2 stops
 Logo
5:05 pm - 8:55 pmBTS-BOS
33h 50m1 stop
Thu, Nov 13 - Sun, Nov 16
SWISS Logo
9:50 pm - 6:50 pmBOS-KSC
15h 00m1 stop
SWISS Logo
9:45 am - 8:20 pmKSC-BOS
16h 35m1 stop
$563SWISS
Find Deal
Sun, Nov 9 - Fri, Nov 21
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5:30 am - 6:50 pmBOS-KSC
31h 20m2 stops
 Logo
9:45 am - 2:52 pmKSC-BOS
35h 07m2 stops
Sun, Nov 9 - Fri, Nov 21
Austrian Airlines Logo
6:25 pm - 11:15 pmBOS-KSC
22h 50m1 stop
Austrian Airlines Logo
2:55 pm - 2:05 pmKSC-BOS
29h 10m1 stop
$573Austrian Airlines
Find Deal
Sun, Nov 9 - Thu, Nov 20
SWISS Logo
9:50 pm - 1:55 pmBOS-KSC
10h 05m1 stop
SWISS Logo
7:40 pm - 8:20 pmKSC-BOS
30h 40m1 stop
$574SWISS
Find Deal
Tue, Nov 11 - Mon, Nov 24
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9:20 pm - 9:25 pmBOS-KSC
18h 05m1 stop
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10:50 am - 8:55 pmKSC-BOS
40h 05m2 stops
Thu, Nov 6 - Sun, Nov 23
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9:20 pm - 9:25 pmBOS-KSC
18h 05m1 stop
 Logo
2:10 pm - 8:55 pmKSC-BOS
36h 45m2 stops
Thu, Nov 6 - Mon, Nov 24
Austrian Airlines Logo
6:25 pm - 2:15 pmBOS-KSC
13h 50m1 stop
Austrian Airlines Logo
5:20 am - 5:15 pmKSC-BOS
17h 55m2 stops
$583Austrian Airlines
Find Deal
Sun, Nov 9 - Thu, Nov 20
Lufthansa Logo
8:40 pm - 2:15 pmBOS-KSC
35h 35m2 stops
Lufthansa Logo
5:20 am - 6:35 pmKSC-BOS
43h 15m2 stops
$637Lufthansa
Find Deal
Wed, Nov 12 - Mon, Nov 24
Lufthansa Logo
8:40 pm - 2:15 pmBOS-KSC
11h 35m2 stops
Lufthansa Logo
2:55 pm - 1:25 pmKSC-BOS
52h 30m2 stops
$664Lufthansa
Find Deal
Sun, Nov 9 - Sun, Nov 23

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Nov 9
BOS9:50 pmBoston Logan Intl
15h 00m
1 stop
KSC6:50 pmKošice Barca
Nov 21
KSC9:45 amKošice Barca
16h 35m
1 stop
BOS8:20 pmBoston Logan Intl
SWISS
Nov 11
BOS9:50 pmBoston Logan Intl
10h 05m
1 stop
KSC1:55 pmKošice Barca
Nov 24
KSC7:40 pmKošice Barca
30h 40m
1 stop
BOS8:20 pmBoston Logan Intl
SWISS
Sep 10
BOS9:40 pmBoston Logan Intl
29h 00m
1 stop
KSC8:40 amKošice Barca
Sep 20
KSC9:35 amKošice Barca
11h 50m
1 stop
BOS3:25 pmBoston Logan Intl

Austrian Airlines flights from Boston to Slovakia

Our best Austrian Airlines deals on Boston to Slovakia flight tickets
Austrian Airlines
Nov 9
BOS6:25 pmBoston Logan Intl
22h 50m
1 stop
KSC11:15 pmKošice Barca
Nov 20
KSC2:55 pmKošice Barca
29h 10m
1 stop
BOS2:05 pmBoston Logan Intl
Austrian Airlines
Nov 9
BOS6:25 pmBoston Logan Intl
13h 50m
1 stop
KSC2:15 pmKošice Barca
Nov 20
KSC5:20 amKošice Barca
17h 55m
2 stops
BOS5:15 pmBoston Logan Intl
Austrian Airlines
Nov 11
BOS6:25 pmBoston Logan Intl
22h 50m
1 stop
KSC11:15 pmKošice Barca
Nov 20
KSC2:55 pmKošice Barca
29h 10m
1 stop
BOS2:05 pmBoston Logan Intl

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 September 4, 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

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Thu 11/13

6:05 pm-3:25 pm

2 stops15h 20m

Bratislava - M. R. Štefánik

Sun 11/16

5:05 pm-8:55 pm

1 stop33h 50m

$537

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/9

9:50 pm-6:50 pm

1 stop15h 00m

Košice Barca

Fri 11/21

9:45 am-8:20 pm

1 stop16h 35m

$563

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/9

5:30 am-6:50 pm

2 stops31h 20m

Košice Barca

Fri 11/21

9:45 am-2:52 pm

2 stops35h 07m

$569

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/9

6:25 pm-11:15 pm

1 stop22h 50m

Košice Barca

Thu 11/20

2:55 pm-2:05 pm

1 stop29h 10m

$573

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/11

9:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

Mon 11/24

7:40 pm-8:20 pm

1 stop30h 40m

$574

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 11/6

9:20 pm-9:25 pm

1 stop18h 05m

Košice Barca

Sun 11/23

10:50 am-8:55 pm

2 stops40h 05m

$575

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 11/6

9:20 pm-9:25 pm

1 stop18h 05m

Košice Barca

Mon 11/24

2:10 pm-8:55 pm

2 stops36h 45m

$581

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/9

6:25 pm-2:15 pm

1 stop13h 50m

Košice Barca

Thu 11/20

5:20 am-5:15 pm

2 stops17h 55m

$583

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 11/12

8:40 pm-2:15 pm

2 stops35h 35m

Košice Barca

Mon 11/24

5:20 am-6:35 pm

2 stops43h 15m

$637

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/9

8:40 pm-2:15 pm

2 stops11h 35m

Košice Barca

Sun 11/23

2:55 pm-1:25 pm

2 stops52h 30m

$664

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to Slovakia?

According to our data, Friday is the cheapest day to fly to Slovakia from Boston. The lowest ticket price found for a Friday departure recently was $725. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Slovakia is Monday, with ticket prices averaging around $1,104.

What is the cheapest time of day to depart on your flight to Slovakia?

According to our data, the cheapest time of day to fly to Slovakia is in the evening. momondo users have found flights departing from Boston to Slovakia in the evening for as low as $824. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $1,004.

Cheap Boston to Slovakia flight deals and tips

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

Direct flights

None
There are no direct flights from Boston to Slovakia. There are no popular flight routes from Boston to Slovakia.
  • 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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1 adult
Tue 9/9
Tue 9/16

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