Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Boston to Košice from $834

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 Košice departing on 4/1. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Boston to Košice

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
5:40 pm - 2:00 pmBOS-KSC
14h 20m2 stops
Lufthansa Logo
2:45 pm - 3:55 pmKSC-BOS
55h 10m2 stops
$834Lufthansa
Find Deal
Wed, Apr 1 - Sun, Apr 5
Austrian Airlines Logo
11:17 am - 2:00 pmBOS-KSC
20h 43m2 stops
Austrian Airlines Logo
2:45 pm - 1:50 pmKSC-BOS
29h 05m1 stop
$923Austrian Airlines
Find Deal
Wed, Apr 1 - Sun, Apr 5
Lufthansa Logo
8:40 pm - 11:15 pmBOS-KSC
20h 35m2 stops
Lufthansa Logo
2:55 pm - 1:25 pmKSC-BOS
52h 30m2 stops
$1,163Lufthansa
Find Deal
Wed, Dec 3 - Mon, Dec 8
Austrian Airlines Logo
1:35 pm - 11:15 pmBOS-KSC
27h 40m2 stops
Austrian Airlines Logo
2:55 pm - 2:05 pmKSC-BOS
29h 10m1 stop
$1,346Austrian Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 8
SWISS Logo
9:50 pm - 9:00 amBOS-KSC
29h 10m1 stop
SWISS Logo
7:40 pm - 8:20 pmKSC-BOS
30h 40m1 stop
$1,365SWISS
Find Deal
Wed, Dec 3 - Mon, Dec 8

Lufthansa flights from Boston to Košice

Our best Lufthansa deals on Boston to Košice flight tickets
Lufthansa
Apr 1
BOS5:40 pmBoston Logan Intl
14h 20m
2 stops
KSC2:00 pmKošice Barca
Apr 5
KSC2:45 pmKošice Barca
55h 10m
2 stops
BOS3:55 pmBoston Logan Intl
$834
Find similar
Lufthansa
Dec 3
BOS8:40 pmBoston Logan Intl
20h 35m
2 stops
KSC11:15 pmKošice Barca
Dec 8
KSC2:55 pmKošice Barca
52h 30m
2 stops
BOS1:25 pmBoston Logan Intl
$1,163
Find similar

Austrian Airlines flights from Boston to Košice

Our best Austrian Airlines deals on Boston to Košice flight tickets
Austrian Airlines
Apr 1
BOS11:17 amBoston Logan Intl
20h 43m
2 stops
KSC2:00 pmKošice Barca
Apr 5
KSC2:45 pmKošice Barca
29h 05m
1 stop
BOS1:50 pmBoston Logan Intl
$923
Find similar
Austrian Airlines
Dec 3
BOS1:35 pmBoston Logan Intl
27h 40m
2 stops
KSC11:15 pmKošice Barca
Dec 8
KSC2:55 pmKošice Barca
29h 10m
1 stop
BOS2:05 pmBoston Logan Intl
$1,346
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Košice 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 November 17, 2025.
Use the filters below to find and compare flights from Boston to Košice that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 4/1

5:40 pm-2:00 pm

2 stops14h 20m

Košice Barca

Sun 4/5

2:45 pm-3:55 pm

2 stops55h 10m

$834

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 4/1

11:17 am-2:00 pm

2 stops20h 43m

Košice Barca

Sun 4/5

2:45 pm-1:50 pm

1 stop29h 05m

$923

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 12/3

8:40 pm-11:15 pm

2 stops20h 35m

Košice Barca

Mon 12/8

2:55 pm-1:25 pm

2 stops52h 30m

$1,163

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 12/3

1:35 pm-11:15 pm

2 stops27h 40m

Košice Barca

Mon 12/8

2:55 pm-2:05 pm

1 stop29h 10m

$1,346

BostonKošice

BOS - KSC

BOSKSC

Boston Logan Intl

Wed 12/3

9:50 pm-9:00 am

1 stop29h 10m

Košice Barca

Mon 12/8

7:40 pm-8:20 pm

1 stop30h 40m

$1,365

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Košice from

How to get the cheapest flight ticket from Boston to Košice

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Košice?

According to our data, Friday is the cheapest day to fly to Košice from Boston. The lowest ticket price found for a Friday departure recently was $725. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Košice for around $1,104.

What is the cheapest time of day to depart on your flight to Košice?

Flying to Košice from Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $824 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Košice is in the afternoon when prices are around $1,004.

When to book flights from Boston to Košice

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Košice according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Košice (BOS to KSC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Košice

Direct flights

None
There are no direct flights from Boston to Košice. There are no popular flight routes from Boston to Košice.
Search flight deals

  • How far is Boston Logan Intl to Košice Barca by plane?

    The distance between Boston Logan Intl and Košice Barca is about 4203.7 mi. Flights usually cover this in 14h 20m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Košice Barca Airport?

    Prices for flights from Boston Logan Intl Airport to Košice Barca Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Boston Logan Intl Airport to Košice Barca Airport?

    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 Košice Barca Airport.

  • What documentation or ID do you need to fly to Košice Barca Airport?

    The necessary travel and health documents for your Košice Barca Airport 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.

Traveling to a place near Košice?

Book flights to Košice if you plan to visit one of these locations
Prešov

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Košice?

Finding the right flight to Košice 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 Košice quick and easy, saving you time and money.

Can I find flights from Boston to Košice with flexible booking policies on momondo?

All flight searches from Boston to Košice on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Boston to Košice?

momondo helps you find the best flight between Boston and Košice by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to Košice right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Košice now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Košice and let you know when they change.

An easier way to manage your Košice trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 12/17
Wed 12/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Slovakia