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Cheap flights from Boston to Kaunas from $607

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 Kaunas departing on 8/19. 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 Kaunas

Cheap round-trip flights

Logo
10:20 am - 3:30 pmBOS-KUN
22h 10m2 stops
Logo
7:20 pm - 5:40 pmKUN-BOS
29h 20m2 stops
$607
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Tue, Aug 19 - Sat, Aug 23
Logo
10:35 am - 3:30 pmBOS-KUN
21h 55m3 stops
Logo
7:20 pm - 5:40 pmKUN-BOS
29h 20m2 stops
$614
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
10:20 am - 3:30 pmBOS-KUN
22h 10m2 stops
Logo
7:20 pm - 5:40 pmKUN-BOS
29h 20m2 stops
$620
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
10:35 am - 3:30 pmBOS-KUN
21h 55m3 stops
Logo
7:20 pm - 5:40 pmKUN-BOS
29h 20m2 stops
$627
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
9:25 pm - 11:00 pmBOS-KUN
18h 35m1 stop
Logo
7:20 pm - 5:50 pmKUN-BOS
29h 30m2 stops
$880
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
9:25 pm - 11:00 pmBOS-KUN
18h 35m1 stop
Logo
7:20 pm - 5:50 pmKUN-BOS
29h 30m2 stops
$972
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
10:35 am - 3:30 pmBOS-KUN
21h 55m3 stops
Logo
7:20 pm - 5:50 pmKUN-BOS
29h 30m3 stops
$1,016
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
10:35 am - 3:30 pmBOS-KUN
21h 55m3 stops
Logo
7:20 pm - 5:50 pmKUN-BOS
29h 30m3 stops
$1,028
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
9:25 pm - 11:00 pmBOS-KUN
18h 35m1 stop
Logo
6:05 am - 2:40 pmKUN-BOS
15h 35m1 stop
$1,352
Find Deal
Tue, Aug 19 - Sat, Aug 23
Logo
9:25 pm - 11:00 pmBOS-KUN
18h 35m1 stop
Logo
6:05 am - 2:40 pmKUN-BOS
15h 35m1 stop
$1,399
Find Deal
Tue, Aug 19 - Sat, Aug 23

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Kaunas 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 1, 2025.
Use the filters below to find and compare flights from Boston to Kaunas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

10:20 am-3:30 pm

2 stops22h 10m

Kaunas

Sat 8/23

7:20 pm-5:40 pm

2 stops29h 20m

$607

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

10:35 am-3:30 pm

3 stops21h 55m

Kaunas

Sat 8/23

7:20 pm-5:40 pm

2 stops29h 20m

$614

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

10:20 am-3:30 pm

2 stops22h 10m

Kaunas

Sat 8/23

7:20 pm-5:40 pm

2 stops29h 20m

$620

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

10:35 am-3:30 pm

3 stops21h 55m

Kaunas

Sat 8/23

7:20 pm-5:40 pm

2 stops29h 20m

$627

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

9:25 pm-11:00 pm

1 stop18h 35m

Kaunas

Sat 8/23

7:20 pm-5:50 pm

2 stops29h 30m

$880

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

9:25 pm-11:00 pm

1 stop18h 35m

Kaunas

Sat 8/23

7:20 pm-5:50 pm

2 stops29h 30m

$972

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

10:35 am-3:30 pm

3 stops21h 55m

Kaunas

Sat 8/23

7:20 pm-5:50 pm

3 stops29h 30m

$1,016

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

10:35 am-3:30 pm

3 stops21h 55m

Kaunas

Sat 8/23

7:20 pm-5:50 pm

3 stops29h 30m

$1,028

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

9:25 pm-11:00 pm

1 stop18h 35m

Kaunas

Sat 8/23

6:05 am-2:40 pm

1 stop15h 35m

$1,352

BostonKaunas

BOS - KUN

BOSKUN

Boston Logan Intl

Tue 8/19

9:25 pm-11:00 pm

1 stop18h 35m

Kaunas

Sat 8/23

6:05 am-2:40 pm

1 stop15h 35m

$1,399

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Kaunas from

How to get the cheapest flight ticket from Boston to Kaunas

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 airlines fly to Kaunas?

Scandinavian Airlines, KLM and Lufthansa are the top three most popular airlines that fly to Kaunas from Boston according to our data. Scandinavian Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Kaunas. Keep in mind that there are 9 different airlines that fly to Kaunas on a routine basis, so you have a few additional options to choose from.

When to book flights from Boston to Kaunas

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

Cheap Boston to Kaunas (BOS to KUN) flight deals and tips

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

Best Price Found

$607

Fastest flight time

18h 35m

Direct flights

None

Airports in Kaunas

1 airport
The best flight deal from Boston to Kaunas found on momondo in the last 72 hours is $607
The fastest flight from Boston to Kaunas takes 18h 35m
There are no direct flights from Boston to Kaunas. Popular non-direct route for this connection is Boston Logan Intl Airport - Kaunas Airport.
There is 1 airport near Kaunas: Kaunas (KUN)
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  • How far is Boston Logan Intl to Kaunas by plane?

    The straight-line distance from Boston Logan Intl to Kaunas is 4076.0 mi. In terms of flight time, this usually takes a little over 18h 35m.

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

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

  • How old do you have to be to fly from Boston Logan Intl Airport to Kaunas 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 Kaunas Airport.

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

    The necessary travel and health documents for your Kaunas 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.

Why use momondo?

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

It is quick and easy to find Boston to Kaunas flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kaunas that suits you.

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

momondo does allow users to show only those flights to Kaunas from Boston which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Boston to Kaunas flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Kaunas, momondo offers a useful price alert feature which will track prices for flights to Kaunas from Boston and alert you when they change.

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