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Cheap flights from Boston to Slovakia from $815

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 10/6. 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.
Multiple Airlines Logo
9:15 pm - 6:00 pmBOS  Boston Logan Intl-KSC Košice Barca
14h 45m1 stop Dublin
Multiple Airlines Logo
8:50 pm - 9:05 pmKSC  Košice Barca-BOS Boston Logan Intl
30h 15m2 stops London Stansted Barcelona-El Prat
$815Multiple Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
5:00 pm - 6:00 pmBOS  Boston Logan Intl-KSC Košice Barca
19h 00m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
3:10 pm - 8:20 pmKSC  Košice Barca-BOS Boston Logan Intl
35h 10m3 stops Rome Fiumicino Lisbon Humberto Delgado Porto
$905Multiple Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
6:50 pm - 2:00 pmBOS  Boston Logan Intl-KSC Košice Barca
37h 10m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl
Multiple Airlines Logo
5:25 am - 5:40 pmKSC  Košice Barca-BOS Boston Logan Intl
18h 15m2 stops Vienna Intl Munich Franz Josef Strauss
$916Multiple Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
9:40 pm - 2:05 pmBOS  Boston Logan Intl-KSC Košice Barca
10h 25m1 stop Zurich
Multiple Airlines Logo
2:45 pm - 1:50 pmKSC  Košice Barca-BOS Boston Logan Intl
29h 05m1 stop Vienna Intl
$958Multiple Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
10:50 am - 11:20 pmBOS  Boston Logan Intl-KSC Košice Barca
30h 30m2 stops Toronto Pearson Intl Vienna Intl
Multiple Airlines Logo
2:45 pm - 3:40 pmKSC  Košice Barca-BOS Boston Logan Intl
54h 55m2 stops Vienna Intl Frankfurt am Main
$1,034Multiple Airlines
Sun, Oct 4 - Sun, Oct 18
Multiple Airlines Logo
12:30 pm - 11:20 pmBOS  Boston Logan Intl-KSC Košice Barca
28h 50m2 stops Toronto Pearson Intl Vienna Intl
Multiple Airlines Logo
2:45 pm - 3:40 pmKSC  Košice Barca-BOS Boston Logan Intl
54h 55m2 stops Vienna Intl Frankfurt am Main
$1,034Multiple Airlines
Sun, Oct 4 - Sun, Oct 18
Multiple Airlines Logo
10:50 am - 11:20 pmBOS  Boston Logan Intl-KSC Košice Barca
30h 30m2 stops Toronto Pearson Intl Vienna Intl
Multiple Airlines Logo
2:45 pm - 3:40 pmKSC  Košice Barca-BOS Boston Logan Intl
54h 55m2 stops Vienna Intl Frankfurt am Main
$1,035Multiple Airlines
Sun, Oct 4 - Sun, Oct 18
Multiple Airlines Logo
5:10 pm - 6:55 pmBOS  Boston Logan Intl-KSC Košice Barca
19h 45m1 stop Zurich
Multiple Airlines Logo
2:45 pm - 3:40 pmKSC  Košice Barca-BOS Boston Logan Intl
54h 55m2 stops Vienna Intl Frankfurt am Main
$1,041Multiple Airlines
Sun, Oct 4 - Sun, Oct 18

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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 17, 2026.
Use the filters below to find and compare flights from Boston to Slovakia that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Tue 10/6

9:15 pm-6:00 pm

1 stop14h 45m

Košice Barca

Tue 10/13

8:50 pm-9:05 pm

2 stops30h 15m

$815

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Tue 10/6

5:00 pm-6:00 pm

2 stops19h 00m

Košice Barca

Tue 10/13

3:10 pm-8:20 pm

3 stops35h 10m

$905

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Tue 10/6

6:50 pm-2:00 pm

2 stops37h 10m

Košice Barca

Tue 10/13

5:25 am-5:40 pm

2 stops18h 15m

$916
Quickest round-trip

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Tue 10/6

9:40 pm-2:05 pm

1 stop10h 25m

Košice Barca

Tue 10/13

2:45 pm-1:50 pm

1 stop29h 05m

$958

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 10/4

10:50 am-11:20 pm

2 stops30h 30m

Košice Barca

Sun 10/18

2:45 pm-3:40 pm

2 stops54h 55m

$1,034

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 10/4

12:30 pm-11:20 pm

2 stops28h 50m

Košice Barca

Sun 10/18

2:45 pm-3:40 pm

2 stops54h 55m

$1,034

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 10/4

10:50 am-11:20 pm

2 stops30h 30m

Košice Barca

Sun 10/18

2:45 pm-3:40 pm

2 stops54h 55m

$1,035

BostonKošice

BOS Boston Logan Intl - KSC Košice Barca

BOSKSC

Boston Logan Intl

Sun 10/4

5:10 pm-6:55 pm

1 stop19h 45m

Košice Barca

Sun 10/18

2:45 pm-3:40 pm

2 stops54h 55m

$1,041

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

14h 45m

Direct flights

None
The fastest flight from Boston to Slovakia takes 14h 45m
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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