Which layover airport offers the lowest fares from Sofia to Boston?

Flights via London (LHR) offer the lowest average round-trip price of $531.

Which airport is the most popular layover for flights between Sofia and Boston?

Amsterdam (AMS) was the most common stop: 27% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Sofia to Boston?

Vienna (VIE) has the shortest average layover time for this route: 1h 49m.

What airlines fly to Boston?

Lufthansa, Turkish Airlines and KLM are the top three most popular airlines that fly to Boston from Sofia according to our data. Lufthansa is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 7 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Sofia to Boston?

Flights connecting via Munich (MUC) have the shortest average one-way travel time: 11h 54m.

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

Prices for flights from Sofia Airport to Boston Logan Intl Airport are updated daily.

How many operators does momondo search for flights from Sofia Airport to Boston Logan Intl Airport?

There are 7 operators available for flights from Sofia Airport to Boston Logan Intl Airport as of December 2025.

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

What documentation or ID do you need to fly to Boston Logan Intl Airport?

The travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$352 Cheap Flights from Sofia to Boston in 2025/26

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8:00 pm - 11:53 pm

SOF

BOS

34h 53m2 stops

9:55 pm - 7:10 pm

BOS

SOF

14h 15m1 stop

$595British Airways

Mon, Jun 15 - Sun, Jul 5

9:30 pm - 12:30 pm

SOF

BOS

22h 00m1 stop

7:25 am - 8:40 pm

BOS

SOF

30h 15m1 stop

$619British Airways

Wed, Jun 24 - Tue, Jul 28

8:00 pm - 11:53 pm

SOF

BOS

34h 53m2 stops

12:00 pm - 8:40 pm

BOS

SOF

25h 40m2 stops

$624British Airways

Mon, Jun 15 - Tue, Jul 7

12:05 pm - 7:45 pm

SOF

BOS

14h 40m1 stop

9:50 pm - 8:40 pm

BOS

SOF

15h 50m1 stop

$648British Airways

Sat, Feb 28 - Tue, Apr 21

9:30 pm - 12:30 pm

SOF

BOS

22h 00m1 stop

12:45 pm - 8:20 pm

BOS

SOF

24h 35m2 stops

$654British Airways

Wed, Jun 24 - Sat, Jul 25

12:05 pm - 11:59 pm

SOF

BOS

18h 54m2 stops

7:35 pm - 8:40 pm

BOS

SOF

18h 05m1 stop

$659British Airways

Sat, Feb 28 - Tue, Apr 21

2:25 pm - 2:35 pm

SOF

BOS

31h 10m2 stops

10:50 pm - 1:30 am

BOS

SOF

19h 40m1 stop

$673Multiple Airlines

Wed, Jan 28 - Wed, Apr 29

12:05 pm - 9:05 pm

SOF

BOS

16h 00m2 stops

10:50 pm - 1:30 am

BOS

SOF

19h 40m1 stop

$676Multiple Airlines

Thu, Apr 16 - Thu, Apr 30

12:55 pm - 1:40 pm

SOF

BOS

31h 45m1 stop

5:05 pm - 12:05 pm

BOS

SOF

12h 00m1 stop

$683ITA Airways

Wed, Jun 17 - Tue, Jul 7

1:50 pm - 8:10 pm

SOF

BOS

13h 20m1 stop

5:05 pm - 10:20 am

BOS

SOF

10h 15m1 stop

$685Multiple Airlines

Wed, Jun 24 - Wed, Jul 15

Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets

Lufthansa

Apr 16

SOF6:30 amSofia

16h 10m

1 stop

BOS3:40 pmBoston Logan Intl

Apr 30

BOS8:05 pmBoston Logan Intl

15h 35m

1 stop

SOF6:40 pmSofia

$688

Find similar

Lufthansa

Jun 16

SOF11:35 amSofia

15h 35m

1 stop

BOS8:10 pmBoston Logan Intl

Jul 9

BOS8:05 pmBoston Logan Intl

20h 05m

1 stop

SOF11:10 pmSofia

$689

Find similar

Lufthansa

Jun 17

SOF6:20 amSofia

16h 20m

1 stop

BOS3:40 pmBoston Logan Intl

Jul 8

BOS5:45 pmBoston Logan Intl

12h 40m

1 stop

SOF1:25 pmSofia

$690

Find similar

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets

United Airlines

Jun 20

SOF6:20 amSofia

16h 20m

1 stop

BOS3:40 pmBoston Logan Intl

Jul 8

BOS8:05 pmBoston Logan Intl

20h 05m

1 stop

SOF11:10 pmSofia

$692

Find similar

United Airlines

Jun 19

SOF6:20 amSofia

16h 20m

1 stop

BOS3:40 pmBoston Logan Intl

Aug 7

BOS5:45 pmBoston Logan Intl

12h 20m

1 stop

SOF1:05 pmSofia

$693

Find similar

United Airlines

Jun 19

SOF2:10 pmSofia

13h 00m

1 stop

BOS8:10 pmBoston Logan Intl

Jul 23

BOS6:00 amBoston Logan Intl

22h 10m

2 stops

SOF11:10 amSofia

$694

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 6/15

8:00 pm-11:53 pm

2 stops34h 53m

Boston Logan Intl

Sun 7/5

9:55 pm-7:10 pm

1 stop14h 15m

$595

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 6/24

9:30 pm-12:30 pm

1 stop22h 00m

Boston Logan Intl

Tue 7/28

7:25 am-8:40 pm

1 stop30h 15m

$619

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 6/15

8:00 pm-11:53 pm

2 stops34h 53m

Boston Logan Intl

Tue 7/7

12:00 pm-8:40 pm

2 stops25h 40m

$624

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 2/28

12:05 pm-7:45 pm

1 stop14h 40m

Boston Logan Intl

Tue 4/21

9:50 pm-8:40 pm

1 stop15h 50m

$648

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 6/24

9:30 pm-12:30 pm

1 stop22h 00m

Boston Logan Intl

Sat 7/25

12:45 pm-8:20 pm

2 stops24h 35m

$654

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 2/28

12:05 pm-11:59 pm

2 stops18h 54m

Boston Logan Intl

Tue 4/21

7:35 pm-8:40 pm

1 stop18h 05m

$659

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 1/28

2:25 pm-2:35 pm

2 stops31h 10m

Boston Logan Intl

Wed 4/29

10:50 pm-1:30 am

1 stop19h 40m

$673

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 4/16

12:05 pm-9:05 pm

2 stops16h 00m

Boston Logan Intl

Thu 4/30

10:50 pm-1:30 am

1 stop19h 40m

$676

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 6/17

12:55 pm-1:40 pm

1 stop31h 45m

Boston Logan Intl

Tue 7/7

5:05 pm-12:05 pm

1 stop12h 00m

$683

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 6/24

1:50 pm-8:10 pm

1 stop13h 20m

Boston Logan Intl

Wed 7/15

5:05 pm-10:20 am

1 stop10h 15m

$685

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Sofia to Boston

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

Prices

Airlines

Layovers

What is the cheapest month to fly to Boston?

In general, January is the cheapest month to fly from Sofia to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $611. If you aren’t able to travel during the month of January, then book flights to Boston from Sofia during February instead. Flights to Boston in February, while not as cheap as those in January, still average around $631.

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from Sofia when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $697 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Sofia for as low as $520 on momondo.

Can stopping save me money on Sofia to Boston flights?

You could potentially save up to 31% on your flight if you consider stops on a Sofia to Boston flight.

How have Sofia to Boston flight prices changed over time?

When to book flights from Sofia to Boston

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

Estimated round-trip price

Cheap Sofia to Boston (SOF to BOS) flight deals and tips

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

Fastest flight time	14h 40m
Direct flights	None

The fastest flight from Sofia to Boston takes 14h 40m

There are no direct flights from Sofia to Boston. There are no popular flight routes from Sofia to Boston.

Search flight deals

How far is Sofia to Boston Logan Intl by plane?
The distance between Sofia and Boston Logan Intl is about 4519.3 mi. In terms of flight time, this usually takes a little over 14h 40m.
When did momondo last update prices for flights from Sofia Airport to Boston Logan Intl Airport?
Prices for flights from Sofia Airport to Boston Logan Intl Airport are updated daily.
How many operators does momondo search for flights from Sofia Airport to Boston Logan Intl Airport?
There are 7 operators available for flights from Sofia Airport to Boston Logan Intl Airport as of December 2025.
How old do you have to be to fly from Sofia Airport to Boston Logan Intl 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 Sofia Airport to Boston Logan Intl Airport.
What documentation or ID do you need to fly to Boston Logan Intl Airport?
The travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sofia to Boston?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Sofia to Boston is Lufthansa (38% of total bookings). The next most popular airlines are Turkish Airlines (18%), KLM (14%), and United Airlines (14%).

Best airlines flying from Sofia to Boston

Compare and see reviews for airlines that fly from Sofia to Boston with momondo

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $533	Free Cancellation	Rating 7.3 4,134 reviews	Search Turkish Airlines flights
Air France	PriceFrom $538	Free Cancellation	Rating 7.4 1,514 reviews	Search Air France flights
KLM	PriceFrom $556	Free Cancellation	Rating 7.7 1,435 reviews	Search KLM flights
United Airlines	PriceFrom $586	Free Cancellation	Rating 7.4 9,124 reviews	Search United Airlines flights
Lufthansa	PriceFrom $587	Free Cancellation	Rating 6.8 7,669 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom $590	Free Cancellation	Rating 7.5 886 reviews	Search Austrian Airlines flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,116 reviews	Search ITA Airways flights

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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Boston from Sofia.

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

Yes. momondo enables you to select and highlight flights to Boston from Sofia with this policy.

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

momondo helps you find the best flight between Sofia and Boston 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 Sofia to Boston right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Sofia to Boston flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.