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Cheap flights from Boston to Slovakia from $358

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 8/4. 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.
Austrian Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Austrian Airlines Logo
5:20 am - 1:30 pm
KSC
-
BOS
14h 10m
1 stop
$811Austrian Airlines
Sun, Nov 8 - Fri, Nov 20
SWISS Logo
5:20 pm - 6:25 pm
BOS
-
KSC
19h 05m
1 stop
SWISS Logo
2:50 pm - 7:55 pm
KSC
-
BOS
11h 05m
1 stop
$825SWISS
Mon, Aug 3 - Wed, Aug 26
SWISS Logo
9:50 pm - 1:55 pm
BOS
-
KSC
10h 05m
1 stop
SWISS Logo
9:45 am - 8:20 pm
KSC
-
BOS
16h 35m
1 stop
$831SWISS
Tue, Nov 10 - Fri, Nov 20
Multiple Airlines Logo
9:50 pm - 6:50 pm
BOS
-
KSC
15h 00m
1 stop
Multiple Airlines Logo
9:45 am - 8:17 pm
KSC
-
BOS
16h 32m
2 stops
$834Multiple Airlines
Sun, Nov 8 - Fri, Nov 20
Multiple Airlines Logo
9:40 pm - 6:25 pm
BOS
-
KSC
14h 45m
1 stop
Multiple Airlines Logo
5:25 am - 6:07 pm
KSC
-
BOS
18h 42m
2 stops
$837Multiple Airlines
Mon, Aug 3 - Wed, Aug 26
Multiple Airlines Logo
5:30 am - 6:50 pm
BOS
-
KSC
31h 20m
2 stops
Multiple Airlines Logo
9:45 am - 2:37 pm
KSC
-
BOS
34h 52m
2 stops
$838Multiple Airlines
Sun, Nov 8 - Fri, Nov 20
Austrian Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Austrian Airlines Logo
5:20 am - 1:30 pm
KSC
-
BOS
14h 10m
1 stop
$840Austrian Airlines
Sun, Nov 8 - Tue, Nov 17
Multiple Airlines Logo
6:55 pm - 2:15 pm
BOS
-
KSC
13h 20m
1 stop
Multiple Airlines Logo
5:20 am - 4:57 pm
KSC
-
BOS
17h 37m
2 stops
$841Multiple Airlines
Sun, Nov 8 - Thu, Nov 19
Austrian Airlines Logo
1:30 pm - 2:15 pm
BOS
-
KSC
18h 45m
2 stops
Austrian Airlines Logo
5:20 am - 1:30 pm
KSC
-
BOS
14h 10m
1 stop
$844Austrian Airlines
Tue, Nov 10 - Tue, Nov 17
Multiple Airlines Logo
3:35 pm - 2:00 pm
BOS
-
KSC
16h 25m
2 stops
Multiple Airlines Logo
5:25 am - 6:07 pm
KSC
-
BOS
18h 42m
2 stops
$847Multiple Airlines
Mon, Aug 3 - Wed, Aug 26

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Aug 3
BOS5:20 pmBoston Logan Intl
19h 05m
1 stop
KSC6:25 pmKošice Barca
Aug 26
KSC2:50 pmKošice Barca
11h 05m
1 stop
BOS7:55 pmBoston Logan Intl
$825
SWISS
Nov 10
BOS9:50 pmBoston Logan Intl
10h 05m
1 stop
KSC1:55 pmKošice Barca
Nov 20
KSC9:45 amKošice Barca
16h 35m
1 stop
BOS8:20 pmBoston Logan Intl
$831
SWISS
Jul 28
BOS9:40 pmBoston Logan Intl
10h 25m
1 stop
KSC2:05 pmKošice Barca
Sep 2
KSC2:50 pmKošice Barca
11h 05m
1 stop
BOS7:55 pmBoston Logan Intl
$976

Austrian Airlines flights from Boston to Slovakia

Our best Austrian Airlines deals on Boston to Slovakia flight tickets
Austrian Airlines
Nov 8
BOS6:55 pmBoston Logan Intl
13h 20m
1 stop
KSC2:15 pmKošice Barca
Nov 20
KSC5:20 amKošice Barca
14h 10m
1 stop
BOS1:30 pmBoston Logan Intl
$811
Austrian Airlines
Nov 8
BOS6:55 pmBoston Logan Intl
13h 20m
1 stop
KSC2:15 pmKošice Barca
Nov 17
KSC5:20 amKošice Barca
14h 10m
1 stop
BOS1:30 pmBoston Logan Intl
$840
Austrian Airlines
Nov 10
BOS1:30 pmBoston Logan Intl
18h 45m
2 stops
KSC2:15 pmKošice Barca
Nov 17
KSC5:20 amKošice Barca
14h 10m
1 stop
BOS1:30 pmBoston Logan Intl
$844

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 May 16, 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

Cheapest round-trip

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/8

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Fri 11/20

5:20 am-1:30 pm

1 stop14h 10m

$811

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 8/3

5:20 pm-6:25 pm

1 stop19h 05m

Košice Barca

Wed 8/26

2:50 pm-7:55 pm

1 stop11h 05m

$825
Quickest round-trip

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/10

9:50 pm-1:55 pm

1 stop10h 05m

Košice Barca

Fri 11/20

9:45 am-8:20 pm

1 stop16h 35m

$831

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/8

9:50 pm-6:50 pm

1 stop15h 00m

Košice Barca

Fri 11/20

9:45 am-8:17 pm

2 stops16h 32m

$834

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 8/3

9:40 pm-6:25 pm

1 stop14h 45m

Košice Barca

Wed 8/26

5:25 am-6:07 pm

2 stops18h 42m

$837

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/8

5:30 am-6:50 pm

2 stops31h 20m

Košice Barca

Fri 11/20

9:45 am-2:37 pm

2 stops34h 52m

$838

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/8

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Tue 11/17

5:20 am-1:30 pm

1 stop14h 10m

$840

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 11/8

6:55 pm-2:15 pm

1 stop13h 20m

Košice Barca

Thu 11/19

5:20 am-4:57 pm

2 stops17h 37m

$841

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 11/10

1:30 pm-2:15 pm

2 stops18h 45m

Košice Barca

Tue 11/17

5:20 am-1:30 pm

1 stop14h 10m

$844

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Mon 8/3

3:35 pm-2:00 pm

2 stops16h 25m

Košice Barca

Wed 8/26

5:25 am-6:07 pm

2 stops18h 42m

$847

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

11h 55m

Direct flights

None
The fastest flight from Boston to Slovakia takes 11h 55m
There are no direct flights from Boston to Slovakia. There are no popular flight routes from Boston to Slovakia.
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Frequently asked questions about flying 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.

Frequently asked questions about flying from Boston to Slovakia

  • 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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