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Cheap flights from Boston to Slovakia from $210

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 3/22. 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
9:00 pm - 10:30 pm
BOS
-
BTS
20h 30m
2 stops
Multiple Airlines Logo
7:05 pm - 7:05 pm
BTS
-
BOS
29h 00m
2 stops
$694Multiple Airlines
Sun, Mar 15 - Mon, Mar 23
SWISS Logo
9:40 pm - 2:05 pm
BOS
-
KSC
10h 25m
1 stop
SWISS Logo
7:40 pm - 3:10 pm
KSC
-
BOS
25h 30m
1 stop
$751SWISS
Tue, Jul 28 - Mon, Aug 31
Multiple Airlines Logo
8:50 pm - 7:15 pm
BOS
-
BTS
16h 25m
2 stops
Multiple Airlines Logo
7:00 am - 9:05 pm
BTS
-
BOS
20h 05m
1 stop
$771Multiple Airlines
Sun, Apr 26 - Fri, May 1
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
$809Austrian Airlines
Thu, Jul 30 - Tue, Sep 1
Multiple Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KSC
14h 50m
1 stop
Multiple Airlines Logo
5:25 am - 6:07 pm
KSC
-
BOS
18h 42m
2 stops
$810Multiple Airlines
Thu, Jul 30 - Tue, Sep 1
SWISS Logo
9:40 pm - 2:05 pm
BOS
-
KSC
10h 25m
1 stop
SWISS Logo
9:55 am - 7:55 pm
KSC
-
BOS
16h 00m
1 stop
$811SWISS
Tue, Jul 28 - Sat, Aug 29
Multiple Airlines Logo
10:40 am - 2:00 pm
BOS
-
KSC
21h 20m
2 stops
Multiple Airlines Logo
7:40 pm - 7:55 pm
KSC
-
BOS
30h 15m
1 stop
$812Multiple Airlines
Thu, Jul 30 - Mon, Aug 31
Multiple Airlines Logo
10:20 pm - 9:00 pm
BOS
-
BTS
16h 40m
1 stop
Multiple Airlines Logo
3:55 pm - 2:40 pm
BTS
-
BOS
28h 45m
2 stops
$813Multiple Airlines
Sat, Mar 28 - Sat, Apr 4
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
$828Lufthansa
Tue, Jul 28 - Wed, Sep 2
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
$840Austrian Airlines
Thu, Jul 30 - Sun, Aug 30

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 31
KSC7:40 pmKošice Barca
25h 30m
1 stop
BOS3:10 pmBoston Logan Intl
$751
SWISS
Jul 28
BOS9:40 pmBoston Logan Intl
10h 25m
1 stop
KSC2:05 pmKošice Barca
Aug 29
KSC9:55 amKošice Barca
16h 00m
1 stop
BOS7:55 pmBoston Logan Intl
$811
SWISS
Jul 30
BOS5:20 pmBoston Logan Intl
9h 55m
1 stop
KSC9:15 amKošice Barca
Aug 28
KSC10:00 amKošice Barca
15h 55m
1 stop
BOS7:55 pmBoston Logan Intl
$861

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
$809
Austrian Airlines
Jul 30
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KSC2:00 pmKošice Barca
Aug 30
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$840
Austrian Airlines
Aug 1
BOS5:10 pmBoston Logan Intl
24h 10m
1 stop
KSC11:20 pmKošice Barca
Sep 1
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$870

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 March 2, 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

Sun 3/15

9:00 pm-10:30 pm

2 stops20h 30m

Bratislava - M. R. Štefánik

Mon 3/23

7:05 pm-7:05 pm

2 stops29h 00m

$694

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 7/28

9:40 pm-2:05 pm

1 stop10h 25m

Košice Barca

Mon 8/31

7:40 pm-3:10 pm

1 stop25h 30m

$751

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Sun 4/26

8:50 pm-7:15 pm

2 stops16h 25m

Bratislava - M. R. Štefánik

Fri 5/1

7:00 am-9:05 pm

1 stop20h 05m

$771

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 7/30

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Tue 9/1

2:45 pm-1:50 pm

1 stop29h 05m

$809

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 7/30

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Tue 9/1

5:25 am-6:07 pm

2 stops18h 42m

$810

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 7/28

9:40 pm-2:05 pm

1 stop10h 25m

Košice Barca

Sat 8/29

9:55 am-7:55 pm

1 stop16h 00m

$811

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 7/30

10:40 am-2:00 pm

2 stops21h 20m

Košice Barca

Mon 8/31

7:40 pm-7:55 pm

1 stop30h 15m

$812

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Sat 3/28

10:20 pm-9:00 pm

1 stop16h 40m

Bratislava - M. R. Štefánik

Sat 4/4

3:55 pm-2:40 pm

2 stops28h 45m

$813

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Tue 7/28

8:05 pm-2:00 pm

2 stops11h 55m

Košice Barca

Wed 9/2

5:25 am-8:10 pm

2 stops20h 45m

$828

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 7/30

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Sun 8/30

2:45 pm-1:50 pm

1 stop29h 05m

$840

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.

An easier way to manage your Slovakia trip

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Find better results for your trip to Slovakia

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