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Cheap flights from Boston to Slovakia from $423

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 7/2. 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.
Multiple Airlines Logo
5:25 pm - 6:00 pm
BOS
-
KSC
18h 35m
1 stop
Multiple Airlines Logo
6:25 pm - 5:35 pm
KSC
-
BOS
29h 10m
2 stops
$739Multiple Airlines
Tue, May 26 - Wed, Jun 17
Multiple Airlines Logo
5:25 pm - 6:00 pm
BOS
-
KSC
18h 35m
1 stop
Multiple Airlines Logo
6:25 pm - 9:05 am
KSC
-
BOS
44h 40m
2 stops
$742Multiple Airlines
Tue, May 26 - Wed, Jun 17
Multiple Airlines Logo
5:25 pm - 6:00 pm
BOS
-
KSC
18h 35m
1 stop
Multiple Airlines Logo
1:05 pm - 5:35 pm
KSC
-
BOS
34h 30m
2 stops
$755Multiple Airlines
Tue, May 26 - Sun, Jun 14
Multiple Airlines Logo
9:15 pm - 6:00 pm
BOS
-
KSC
14h 45m
1 stop
Multiple Airlines Logo
6:25 pm - 2:41 pm
KSC
-
BOS
50h 16m
2 stops
$770Multiple Airlines
Tue, May 26 - Wed, Jun 17
Multiple Airlines Logo
5:25 pm - 6:00 pm
BOS
-
KSC
18h 35m
1 stop
Multiple Airlines Logo
6:25 pm - 7:41 pm
KSC
-
BOS
31h 16m
2 stops
$775Multiple Airlines
Tue, May 26 - Wed, Jun 17
Multiple Airlines Logo
5:25 pm - 6:00 pm
BOS
-
KSC
18h 35m
1 stop
Multiple Airlines Logo
1:05 pm - 7:41 pm
KSC
-
BOS
36h 36m
2 stops
$793Multiple Airlines
Tue, May 26 - Sun, Jun 14
SWISS Logo
9:40 pm - 9:15 am
BOS
-
KSC
29h 35m
1 stop
SWISS Logo
2:50 pm - 7:55 pm
KSC
-
BOS
11h 05m
1 stop
$806SWISS
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
11:30 pm - 12:40 pm
BOS
-
KSC
31h 10m
1 stop
Multiple Airlines Logo
6:25 pm - 5:35 pm
KSC
-
BOS
29h 10m
2 stops
$817Multiple Airlines
Fri, May 29 - Wed, Jun 17
Multiple Airlines Logo
1:00 pm - 2:00 pm
BOS
-
KSC
19h 00m
2 stops
Multiple Airlines Logo
2:50 pm - 7:55 pm
KSC
-
BOS
11h 05m
1 stop
$818Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
5:25 pm - 6:00 pm
BOS
-
KSC
18h 35m
1 stop
Multiple Airlines Logo
8:50 pm - 7:50 pm
KSC
-
BOS
29h 00m
2 stops
$823Multiple Airlines
Tue, May 26 - Tue, Jun 16

Austrian Airlines flights from Boston to Slovakia

Our best Austrian Airlines deals on Boston to Slovakia flight tickets
Austrian Airlines
May 21
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KSC2:00 pmKošice Barca
Jun 18
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$920
Austrian Airlines
May 21
BOS11:00 amBoston Logan Intl
30h 20m
2 stops
KSC11:20 pmKošice Barca
Jun 16
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$925
Austrian Airlines
May 21
BOS5:10 pmBoston Logan Intl
24h 10m
1 stop
KSC11:20 pmKošice Barca
Jun 15
KSC2:45 pmKošice Barca
34h 29m
2 stops
BOS7:14 pmBoston Logan Intl
$930

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Apr 8
BOS9:40 pmBoston Logan Intl
29h 35m
1 stop
KSC9:15 amKošice Barca
Apr 15
KSC2:50 pmKošice Barca
11h 05m
1 stop
BOS7:55 pmBoston Logan Intl
$806
SWISS
May 20
BOS9:40 pmBoston Logan Intl
29h 35m
1 stop
KSC9:15 amKošice Barca
Jun 17
KSC2:50 pmKošice Barca
30h 20m
1 stop
BOS3:10 pmBoston Logan Intl
$951

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 February 25, 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 5/26

5:25 pm-6:00 pm

1 stop18h 35m

Košice Barca

Wed 6/17

6:25 pm-5:35 pm

2 stops29h 10m

$739

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 5/26

5:25 pm-6:00 pm

1 stop18h 35m

Košice Barca

Wed 6/17

6:25 pm-9:05 am

2 stops44h 40m

$742

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 5/26

5:25 pm-6:00 pm

1 stop18h 35m

Košice Barca

Sun 6/14

1:05 pm-5:35 pm

2 stops34h 30m

$755

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 5/26

9:15 pm-6:00 pm

1 stop14h 45m

Košice Barca

Wed 6/17

6:25 pm-2:41 pm

2 stops50h 16m

$770

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 5/26

5:25 pm-6:00 pm

1 stop18h 35m

Košice Barca

Wed 6/17

6:25 pm-7:41 pm

2 stops31h 16m

$775

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 5/26

5:25 pm-6:00 pm

1 stop18h 35m

Košice Barca

Sun 6/14

1:05 pm-7:41 pm

2 stops36h 36m

$793

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 4/8

9:40 pm-9:15 am

1 stop29h 35m

Košice Barca

Wed 4/15

2:50 pm-7:55 pm

1 stop11h 05m

$806

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Fri 5/29

11:30 pm-12:40 pm

1 stop31h 10m

Košice Barca

Wed 6/17

6:25 pm-5:35 pm

2 stops29h 10m

$817

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 4/8

1:00 pm-2:00 pm

2 stops19h 00m

Košice Barca

Wed 4/15

2:50 pm-7:55 pm

1 stop11h 05m

$818

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 5/26

5:25 pm-6:00 pm

1 stop18h 35m

Košice Barca

Tue 6/16

8:50 pm-7:50 pm

2 stops29h 00m

$823

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

15h 30m

Direct flights

None
The fastest flight from Boston to Slovakia takes 15h 30m
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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