What is the cheapest airline that flies from Sofia to Boston Logan Intl?

British Airways is the most popular carrier operating from Sofia to Boston Logan Intl

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

Amsterdam (AMS) was the most common stop: 25% of momondo users choosing 1-stop flights on this route connected there.

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

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

What airlines fly to Boston?

Lufthansa, Turkish Airlines and United Airlines 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 46% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 8 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 connection time from Sofia to Boston?

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

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 8 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.

$399 Cheap Flights from Sofia to Boston in 2025/26

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Find the cheapest flights from Sofia to Boston

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9:30 pm - 10:53 pm

SOF

BOS

32h 23m2 stops

6:02 am - 7:10 pm

BOS

SOF

30h 08m2 stops

$593British Airways

Wed, Jun 17 - Sun, Jul 5

12:05 pm - 3:48 pm

SOF

BOS

34h 43m2 stops

3:35 pm - 1:00 pm

BOS

SOF

14h 25m2 stops

$595British Airways

Sat, Jan 17 - Sat, Jan 24

7:15 pm - 8:55 pm

SOF

BOS

32h 40m1 stop

10:45 pm - 3:40 pm

BOS

SOF

33h 55m2 stops

$603Multiple Airlines

Sat, Jan 24 - Sun, Feb 8

7:15 pm - 8:55 pm

SOF

BOS

32h 40m1 stop

10:45 pm - 3:40 pm

BOS

SOF

33h 55m2 stops

$604Multiple Airlines

Sat, Jan 24 - Sun, Feb 8

5:35 pm - 8:55 pm

SOF

BOS

34h 20m2 stops

10:50 pm - 9:40 am

BOS

SOF

27h 50m1 stop

$615Multiple Airlines

Mon, Feb 2 - Tue, Jun 9

12:05 pm - 7:45 pm

SOF

BOS

14h 40m1 stop

7:34 pm - 4:20 pm

BOS

SOF

13h 46m2 stops

$616British Airways

Sat, Jan 24 - Sun, Feb 8

4:45 pm - 8:55 pm

SOF

BOS

35h 10m1 stop

9:15 pm - 2:55 am

BOS

SOF

22h 40m2 stops

$617Multiple Airlines

Sun, Feb 1 - Tue, Feb 17

12:05 pm - 7:45 pm

SOF

BOS

14h 40m1 stop

9:35 pm - 4:20 pm

BOS

SOF

11h 45m1 stop

$619British Airways

Sat, Jan 24 - Sun, Feb 8

12:05 pm - 10:56 pm

SOF

BOS

17h 51m2 stops

4:20 pm - 4:20 pm

BOS

SOF

17h 00m2 stops

$621British Airways

Sat, Jan 24 - Sun, Feb 8

4:45 pm - 8:55 pm

SOF

BOS

35h 10m1 stop

10:50 pm - 1:30 am

BOS

SOF

19h 40m1 stop

$622Multiple Airlines

Mon, Feb 2 - Tue, Jun 9

British Airways flights from Sofia to Boston

Our best British Airways deals on Sofia to Boston flight tickets

British Airways

Jun 17

SOF9:30 pmSofia

32h 23m

2 stops

BOS10:53 pmBoston Logan Intl

Jul 5

BOS6:02 amBoston Logan Intl

30h 08m

2 stops

SOF7:10 pmSofia

$593

Find similar

British Airways

Jan 17

SOF12:05 pmSofia

34h 43m

2 stops

BOS3:48 pmBoston Logan Intl

Jan 24

BOS3:35 pmBoston Logan Intl

14h 25m

2 stops

SOF1:00 pmSofia

$595

Find similar

British Airways

Jan 24

SOF12:05 pmSofia

14h 40m

1 stop

BOS7:45 pmBoston Logan Intl

Feb 8

BOS7:34 pmBoston Logan Intl

13h 46m

2 stops

SOF4:20 pmSofia

$616

Find similar

ITA Airways flights from Sofia to Boston

Our best ITA Airways deals on Sofia to Boston flight tickets

ITA Airways

Jun 17

SOF12:55 pmSofia

31h 45m

1 stop

BOS1:40 pmBoston Logan Intl

Jul 7

BOS5:05 pmBoston Logan Intl

12h 00m

1 stop

SOF12:05 pmSofia

$678

Find similar

ITA Airways

Jun 17

SOF12:55 pmSofia

31h 45m

1 stop

BOS1:40 pmBoston Logan Intl

Jul 9

BOS5:05 pmBoston Logan Intl

17h 05m

1 stop

SOF5:10 pmSofia

$683

Find similar

ITA Airways

Jun 14

SOF6:00 pmSofia

26h 40m

1 stop

BOS1:40 pmBoston Logan Intl

Jul 11

BOS5:05 pmBoston Logan Intl

17h 05m

1 stop

SOF5:10 pmSofia

$687

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 6/17

9:30 pm-10:53 pm

2 stops32h 23m

Boston Logan Intl

Sun 7/5

6:02 am-7:10 pm

2 stops30h 08m

$593

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 1/17

12:05 pm-3:48 pm

2 stops34h 43m

Boston Logan Intl

Sat 1/24

3:35 pm-1:00 pm

2 stops14h 25m

$595

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 1/24

7:15 pm-8:55 pm

1 stop32h 40m

Boston Logan Intl

Sun 2/8

10:45 pm-3:40 pm

2 stops33h 55m

$603

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 1/24

7:15 pm-8:55 pm

1 stop32h 40m

Boston Logan Intl

Sun 2/8

10:45 pm-3:40 pm

2 stops33h 55m

$604

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 2/2

5:35 pm-8:55 pm

2 stops34h 20m

Boston Logan Intl

Tue 6/9

10:50 pm-9:40 am

1 stop27h 50m

$615

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 1/24

12:05 pm-7:45 pm

1 stop14h 40m

Boston Logan Intl

Sun 2/8

7:34 pm-4:20 pm

2 stops13h 46m

$616

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 2/1

4:45 pm-8:55 pm

1 stop35h 10m

Boston Logan Intl

Tue 2/17

9:15 pm-2:55 am

2 stops22h 40m

$617

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 1/24

12:05 pm-7:45 pm

1 stop14h 40m

Boston Logan Intl

Sun 2/8

9:35 pm-4:20 pm

1 stop11h 45m

$619

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 1/24

12:05 pm-10:56 pm

2 stops17h 51m

Boston Logan Intl

Sun 2/8

4:20 pm-4:20 pm

2 stops17h 00m

$621

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 2/2

4:45 pm-8:55 pm

1 stop35h 10m

Boston Logan Intl

Tue 6/9

10:50 pm-1:30 am

1 stop19h 40m

$622

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.

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

The cheapest day to depart from Sofia to Boston is on a Thursday when prices can be found for as low as $644. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $752.

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

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Sofia to Boston in the afternoon for as low as $596. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $709 per ticket.

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	16h 20m
Direct flights	None

The fastest flight from Sofia to Boston takes 16h 20m

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 16h 20m.
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 8 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 (37% of total bookings). The next most popular airlines are Turkish Airlines (16%), United Airlines (14%), and KLM (13%).

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 4,113 reviews	Search Turkish Airlines flights
Air France	PriceFrom $538	Free Cancellation	Rating 7.4 1,515 reviews	Search Air France flights
KLM	PriceFrom $556	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
United Airlines	PriceFrom $586	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Lufthansa	PriceFrom $586	Free Cancellation	Rating 6.8 7,656 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom $590	Free Cancellation	Rating 7.6 884 reviews	Search Austrian Airlines flights
SWISS	PriceFrom $594	Free Cancellation	Rating 7.5 1,820 reviews	Search SWISS flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,114 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.