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Cheap flights from Boston to Slovakia from $219

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 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Boston to Slovakia

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
9:50 pm - 6:55 pmBOS  Boston Logan Intl-KSC Košice Barca
15h 05m1 stop Zurich
SWISS Logo
9:45 am - 8:20 pmKSC  Košice Barca-BOS Boston Logan Intl
16h 35m1 stop Zurich
$794SWISS
Sun, Nov 15 - Fri, Nov 27
Multiple Airlines Logo
9:50 pm - 6:55 pmBOS  Boston Logan Intl-KSC Košice Barca
15h 05m1 stop Zurich
Multiple Airlines Logo
9:45 am - 9:28 pmKSC  Košice Barca-BOS Boston Logan Intl
17h 43m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
$797Multiple Airlines
Sun, Nov 15 - Fri, Nov 27
Multiple Airlines Logo
9:50 pm - 6:55 pmBOS  Boston Logan Intl-KSC Košice Barca
15h 05m1 stop Zurich
Multiple Airlines Logo
9:45 am - 9:28 pmKSC  Košice Barca-BOS Boston Logan Intl
17h 43m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
$798Multiple Airlines
Sun, Nov 15 - Fri, Nov 27
Multiple Airlines Logo
5:30 am - 6:55 pmBOS  Boston Logan Intl-KSC Košice Barca
31h 25m2 stops Montreal Pierre Elliott Trudeau Intl Zurich
Multiple Airlines Logo
9:45 am - 9:28 pmKSC  Košice Barca-BOS Boston Logan Intl
17h 43m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
$801Multiple Airlines
Sun, Nov 15 - Fri, Nov 27
Multiple Airlines Logo
5:50 pm - 11:55 amBOS  Boston Logan Intl-KSC Košice Barca
12h 05m1 stop Dublin
Multiple Airlines Logo
10:00 pm - 5:50 pmKSC  Košice Barca-BOS Boston Logan Intl
25h 50m2 stops London Stansted Reykjavik Keflavik Intl
$826Multiple Airlines
Wed, Nov 18 - Mon, Nov 30
Austrian Airlines Logo
6:55 pm - 11:15 pmBOS  Boston Logan Intl-KSC Košice Barca
22h 20m1 stop Vienna Intl
Austrian Airlines Logo
2:55 pm - 1:30 pmKSC  Košice Barca-BOS Boston Logan Intl
28h 35m1 stop Vienna Intl
$828Austrian Airlines
Sun, Nov 15 - Thu, Nov 26
Multiple Airlines Logo
4:45 pm - 6:35 pmBOS  Boston Logan Intl-BTS Bratislava - M. R. Štefánik
19h 50m2 stops Frankfurt am Main Milan Malpensa
Multiple Airlines Logo
7:50 pm - 2:45 pmBTS  Bratislava - M. R. Štefánik-BOS Boston Logan Intl
24h 55m2 stops Milan Malpensa Frankfurt am Main
$828Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Austrian Airlines Logo
6:55 pm - 11:15 pmBOS  Boston Logan Intl-KSC Košice Barca
22h 20m1 stop Vienna Intl
Austrian Airlines Logo
5:20 am - 1:30 pmKSC  Košice Barca-BOS Boston Logan Intl
14h 10m1 stop Vienna Intl
$833Austrian Airlines
Sun, Nov 15 - Tue, Nov 24
Austrian Airlines Logo
6:55 pm - 11:15 pmBOS  Boston Logan Intl-KSC Košice Barca
22h 20m1 stop Vienna Intl
Austrian Airlines Logo
5:20 am - 1:30 pmKSC  Košice Barca-BOS Boston Logan Intl
14h 10m1 stop Vienna Intl
$834Austrian Airlines
Sun, Nov 15 - Tue, Nov 24
Multiple Airlines Logo
5:50 pm - 2:30 pmBOS  Boston Logan Intl-KSC Košice Barca
14h 40m1 stop Dublin
Multiple Airlines Logo
10:00 pm - 5:50 pmKSC  Košice Barca-BOS Boston Logan Intl
25h 50m2 stops London Stansted Reykjavik Keflavik Intl
$834Multiple Airlines
Sat, Nov 14 - Mon, Nov 30

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Austrian Airlines flights from Boston to Slovakia

Our best Austrian Airlines deals on Boston to Slovakia flight tickets
Austrian Airlines
Nov 15
BOS6:55 pmBoston Logan Intl
22h 20m
1 stop
KSC11:15 pmKošice Barca
Nov 26
KSC2:55 pmKošice Barca
28h 35m
1 stop
BOS1:30 pmBoston Logan Intl
$828
Austrian Airlines
Nov 15
BOS6:55 pmBoston Logan Intl
22h 20m
1 stop
KSC11:15 pmKošice Barca
Nov 24
KSC5:20 amKošice Barca
14h 10m
1 stop
BOS1:30 pmBoston Logan Intl
$833
Austrian Airlines
Nov 15
BOS12:10 pmBoston Logan Intl
29h 05m
2 stops
KSC11:15 pmKošice Barca
Nov 24
KSC5:20 amKošice Barca
14h 10m
1 stop
BOS1:30 pmBoston Logan Intl
$838

SWISS flights from Boston to Slovakia

Our best SWISS deals on Boston to Slovakia flight tickets
SWISS
Nov 15
BOS9:50 pmBoston Logan Intl
15h 05m
1 stop
KSC6:55 pmKošice Barca
Nov 27
KSC9:45 amKošice Barca
16h 35m
1 stop
BOS8:20 pmBoston Logan Intl
$794
SWISS
Nov 18
BOS9:50 pmBoston Logan Intl
29h 10m
1 stop
KSC9:00 amKošice Barca
Nov 27
KSC9:45 amKošice Barca
16h 35m
1 stop
BOS8:20 pmBoston Logan Intl
$854
SWISS
Nov 15
BOS9:50 pmBoston Logan Intl
15h 05m
1 stop
KSC6:55 pmKošice Barca
Nov 30
KSC7:40 pmKošice Barca
30h 40m
1 stop
BOS8:20 pmBoston Logan Intl
$969

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 August 6, 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
Quickest round-trip

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 11/15

9:50 pm-6:55 pm

1 stop15h 05m

Košice Barca

Fri 11/27

9:45 am-8:20 pm

1 stop16h 35m

$794

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 11/15

9:50 pm-6:55 pm

1 stop15h 05m

Košice Barca

Fri 11/27

9:45 am-9:28 pm

2 stops17h 43m

$797

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 11/15

9:50 pm-6:55 pm

1 stop15h 05m

Košice Barca

Fri 11/27

9:45 am-9:28 pm

2 stops17h 43m

$798

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 11/15

5:30 am-6:55 pm

2 stops31h 25m

Košice Barca

Fri 11/27

9:45 am-9:28 pm

2 stops17h 43m

$801

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Wed 11/18

5:50 pm-11:55 am

1 stop12h 05m

Košice Barca

Mon 11/30

10:00 pm-5:50 pm

2 stops25h 50m

$826

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-11:15 pm

1 stop22h 20m

Košice Barca

Thu 11/26

2:55 pm-1:30 pm

1 stop28h 35m

$828

BostonBratislava

BOS Boston Logan Intl - BTS Bratislava - M. R. Štefánik

BOSBTS

Boston Logan Intl

Wed 9/2

4:45 pm-6:35 pm

2 stops19h 50m

Bratislava - M. R. Štefánik

Wed 9/9

7:50 pm-2:45 pm

2 stops24h 55m

$828

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-11:15 pm

1 stop22h 20m

Košice Barca

Tue 11/24

5:20 am-1:30 pm

1 stop14h 10m

$833

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 11/15

6:55 pm-11:15 pm

1 stop22h 20m

Košice Barca

Tue 11/24

5:20 am-1:30 pm

1 stop14h 10m

$834

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sat 11/14

5:50 pm-2:30 pm

1 stop14h 40m

Košice Barca

Mon 11/30

10:00 pm-5:50 pm

2 stops25h 50m

$834

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

13h 55m

Direct flights

None
The fastest flight from Boston to Slovakia takes 13h 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.

An easier way to manage your Slovakia trip

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Find better results for your trip to Slovakia

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