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Cheap flights from Boston to Slovakia from $312

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 9/8. 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
7:50 pm - 9:55 pm
BOS
-
BTS
20h 05m
3 stops
Multiple Airlines Logo
7:05 am - 7:55 pm
BTS
-
BOS
42h 50m
3 stops
$810Multiple Airlines
Sun, Nov 8 - Sat, Nov 14
Multiple Airlines Logo
7:50 pm - 9:55 pm
BOS
-
BTS
20h 05m
3 stops
Multiple Airlines Logo
6:25 am - 7:55 pm
BTS
-
BOS
19h 30m
2 stops
$834Multiple Airlines
Sun, Nov 8 - Sat, Nov 14
Multiple Airlines Logo
9:20 pm - 5:45 pm
BOS
-
BTS
14h 25m
1 stop
Multiple Airlines Logo
2:10 pm - 1:50 pm
BTS
-
BOS
29h 40m
1 stop
$868Multiple Airlines
Sun, Nov 8 - Sat, Nov 14
Multiple Airlines Logo
7:15 pm - 11:20 pm
BOS
-
KSC
46h 05m
2 stops
Multiple Airlines Logo
5:25 am - 1:50 pm
KSC
-
BOS
14h 25m
1 stop
$871Multiple Airlines
Sat, Sep 5 - Thu, Sep 24
Multiple Airlines Logo
7:15 pm - 11:20 pm
BOS
-
KSC
46h 05m
2 stops
Multiple Airlines Logo
5:25 am - 9:50 am
KSC
-
BOS
34h 25m
2 stops
$874Multiple Airlines
Sat, Sep 5 - Thu, Sep 24
Multiple Airlines Logo
5:25 pm - 8:35 pm
BOS
-
BTS
21h 10m
1 stop
Multiple Airlines Logo
11:15 pm - 6:35 pm
BTS
-
BOS
25h 20m
2 stops
$889Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
Austrian Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KSC
14h 50m
1 stop
Austrian Airlines Logo
5:25 am - 1:50 pm
KSC
-
BOS
14h 25m
1 stop
$898Austrian Airlines
Sat, Sep 5 - Thu, Sep 24
Multiple Airlines Logo
10:50 am - 4:20 pm
BOS
-
KSC
23h 30m
2 stops
Multiple Airlines Logo
10:05 pm - 5:50 pm
KSC
-
BOS
24h 45m
2 stops
$909Multiple Airlines
Thu, Oct 15 - Sun, Oct 25
Multiple Airlines Logo
7:50 pm - 5:45 pm
BOS
-
BTS
15h 55m
2 stops
Multiple Airlines Logo
6:25 am - 7:55 pm
BTS
-
BOS
19h 30m
2 stops
$910Multiple Airlines
Sun, Nov 8 - Sat, Nov 14
SWISS Logo
9:40 pm - 6:55 pm
BOS
-
KSC
15h 15m
1 stop
SWISS Logo
7:40 pm - 7:55 pm
KSC
-
BOS
30h 15m
1 stop
$939SWISS
Sun, Aug 30 - Mon, Sep 21

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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 July 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

Cheapest round-trip

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Sun 11/8

7:50 pm-9:55 pm

3 stops20h 05m

Bratislava - M. R. Štefánik

Sat 11/14

7:05 am-7:55 pm

3 stops42h 50m

$810

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Sun 11/8

7:50 pm-9:55 pm

3 stops20h 05m

Bratislava - M. R. Štefánik

Sat 11/14

6:25 am-7:55 pm

2 stops19h 30m

$834

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Sun 11/8

9:20 pm-5:45 pm

1 stop14h 25m

Bratislava - M. R. Štefánik

Sat 11/14

2:10 pm-1:50 pm

1 stop29h 40m

$868

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 9/5

7:15 pm-11:20 pm

2 stops46h 05m

Košice Barca

Thu 9/24

5:25 am-1:50 pm

1 stop14h 25m

$871

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 9/5

7:15 pm-11:20 pm

2 stops46h 05m

Košice Barca

Thu 9/24

5:25 am-9:50 am

2 stops34h 25m

$874

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Mon 8/17

5:25 pm-8:35 pm

1 stop21h 10m

Bratislava - M. R. Štefánik

Mon 8/24

11:15 pm-6:35 pm

2 stops25h 20m

$889
Quickest round-trip

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sat 9/5

5:10 pm-2:00 pm

1 stop14h 50m

Košice Barca

Thu 9/24

5:25 am-1:50 pm

1 stop14h 25m

$898

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Thu 10/15

10:50 am-4:20 pm

2 stops23h 30m

Košice Barca

Sun 10/25

10:05 pm-5:50 pm

2 stops24h 45m

$909

BostonBratislava

BOS - BTS

BOSBTS

Boston Logan Intl

Sun 11/8

7:50 pm-5:45 pm

2 stops15h 55m

Bratislava - M. R. Štefánik

Sat 11/14

6:25 am-7:55 pm

2 stops19h 30m

$910

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Sun 8/30

9:40 pm-6:55 pm

1 stop15h 15m

Košice Barca

Mon 9/21

7:40 pm-7:55 pm

1 stop30h 15m

$939

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

20h 05m

Direct flights

None
The fastest flight from Boston to Slovakia takes 20h 05m
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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Find better results for your trip to Slovakia

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