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 7 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

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

Amsterdam (AMS) was the most common stop: 26% of momondo users choosing 1-stop flights on this route connected there.

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.

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.

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 January 2026.

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.

$206 Cheap Flights from Sofia to Boston in 2026

Q: What is the typical price of a round-trip flight between Sofia and Boston?

Prices are currently low for flights on this route. Typical prices usually range from $606 to $731. The lowest price recently found on this route was $435.

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Find the cheapest flights from Sofia to Boston

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Enter your travel dates to find the best prices.

5:20 pm - 8:55 pm

SOF

BOS

34h 35m

2 stops

9:50 pm - 3:15 pm

BOS

SOF

10h 25m

1 stop

$435Multiple Airlines

Mon, Feb 2 - Wed, Feb 18

4:45 pm - 8:55 pm

SOF

BOS

35h 10m

1 stop

9:50 pm - 3:15 pm

BOS

SOF

10h 25m

1 stop

$441Multiple Airlines

Mon, Feb 2 - Wed, Feb 18

9:50 pm - 9:05 pm

SOF

BOS

30h 15m

1 stop

8:05 pm - 11:10 pm

BOS

SOF

20h 05m

1 stop

$446Multiple Airlines

Tue, May 12 - Mon, May 18

11:45 pm - 9:05 pm

SOF

BOS

28h 20m

2 stops

8:05 pm - 11:10 pm

BOS

SOF

20h 05m

1 stop

$473Multiple Airlines

Tue, May 12 - Mon, May 18

6:30 am - 9:05 pm

SOF

BOS

21h 35m

2 stops

8:05 pm - 11:10 pm

BOS

SOF

20h 05m

1 stop

$493Multiple Airlines

Wed, May 13 - Sun, May 17

9:50 pm - 9:05 pm

SOF

BOS

30h 15m

1 stop

8:05 pm - 11:10 pm

BOS

SOF

20h 05m

1 stop

$496Multiple Airlines

Tue, May 12 - Wed, May 20

9:00 pm - 8:55 pm

SOF

BOS

54h 55m

2 stops

8:40 pm - 6:20 pm

BOS

SOF

14h 40m

1 stop

$504Multiple Airlines

Tue, Feb 10 - Tue, Feb 17

6:30 am - 8:55 pm

SOF

BOS

21h 25m

2 stops

6:25 pm - 11:50 am

BOS

SOF

10h 25m

1 stop

$506Multiple Airlines

Sat, Feb 14 - Sun, Mar 1

10:30 am - 8:55 pm

SOF

BOS

41h 25m

2 stops

6:25 pm - 6:00 pm

BOS

SOF

16h 35m

1 stop

$509Multiple Airlines

Sun, Feb 15 - Tue, Mar 3

9:50 pm - 9:05 pm

SOF

BOS

30h 15m

1 stop

11:30 pm - 10:00 pm

BOS

SOF

15h 30m

2 stops

$515Multiple Airlines

Tue, May 12 - Sun, May 17

KLM flights from Sofia to Boston

Our best KLM deals on Sofia to Boston flight tickets

KLM

May 16

SOF7:00 amSofia

16h 33m

1 stop

BOS4:33 pmBoston Logan Intl

May 24

BOS4:35 pmBoston Logan Intl

14h 25m

1 stop

SOF2:00 pmSofia

$635

KLM

Feb 2

SOF7:00 amSofia

18h 30m

2 stops

BOS6:30 pmBoston Logan Intl

Feb 18

BOS1:04 pmBoston Logan Intl

18h 01m

2 stops

SOF2:05 pmSofia

$640

Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets

Lufthansa

Jan 28

SOF2:00 pmSofia

11h 35m

1 stop

BOS6:35 pmBoston Logan Intl

Feb 1

BOS4:15 pmBoston Logan Intl

13h 45m

2 stops

SOF1:00 pmSofia

$1,146

Lufthansa

Jan 28

SOF6:05 amSofia

14h 30m

2 stops

BOS1:35 pmBoston Logan Intl

Feb 1

BOS4:15 pmBoston Logan Intl

13h 45m

2 stops

SOF1:00 pmSofia

$1,178

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 2/2

5:20 pm-8:55 pm

2 stops34h 35m

Boston Logan Intl

Wed 2/18

9:50 pm-3:15 pm

1 stop10h 25m

$435

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 2/2

4:45 pm-8:55 pm

1 stop35h 10m

Boston Logan Intl

Wed 2/18

9:50 pm-3:15 pm

1 stop10h 25m

$441

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/12

9:50 pm-9:05 pm

1 stop30h 15m

Boston Logan Intl

Mon 5/18

8:05 pm-11:10 pm

1 stop20h 05m

$446

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/12

11:45 pm-9:05 pm

2 stops28h 20m

Boston Logan Intl

Mon 5/18

8:05 pm-11:10 pm

1 stop20h 05m

$473

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 5/13

6:30 am-9:05 pm

2 stops21h 35m

Boston Logan Intl

Sun 5/17

8:05 pm-11:10 pm

1 stop20h 05m

$493

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/12

9:50 pm-9:05 pm

1 stop30h 15m

Boston Logan Intl

Wed 5/20

8:05 pm-11:10 pm

1 stop20h 05m

$496

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 2/10

9:00 pm-8:55 pm

2 stops54h 55m

Boston Logan Intl

Tue 2/17

8:40 pm-6:20 pm

1 stop14h 40m

$504

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 2/14

6:30 am-8:55 pm

2 stops21h 25m

Boston Logan Intl

Sun 3/1

6:25 pm-11:50 am

1 stop10h 25m

$506

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 2/15

10:30 am-8:55 pm

2 stops41h 25m

Boston Logan Intl

Tue 3/3

6:25 pm-6:00 pm

1 stop16h 35m

$509

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/12

9:50 pm-9:05 pm

1 stop30h 15m

Boston Logan Intl

Sun 5/17

11:30 pm-10:00 pm

2 stops15h 30m

$515

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 typical price of a round-trip flight between Sofia and Boston?

What is the cheapest month to fly to Boston?

In general, February 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 $612. If you aren’t able to travel during the month of February, then book flights to Boston from Sofia during March instead. Flights to Boston in March, while not as cheap as those in February, still average around $643.

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 $708 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?

As of January 2026, prices for Sofia to Boston flights are approximately 2% cheaper when compared to flights at the same time last year.

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	11h 35m
Direct flights	None

The fastest flight from Sofia to Boston takes 11h 35m

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 11h 35m.
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 January 2026.
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 (39% of total bookings). The next most popular airlines are Turkish Airlines (18%), United Airlines (14%), and KLM (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 4,167 reviews	Search Turkish Airlines flights
Air France	PriceFrom $538	Free Cancellation	Rating 7.4 1,522 reviews	Search Air France flights
KLM	PriceFrom $562	Free Cancellation	Rating 7.7 1,437 reviews	Search KLM flights
United Airlines	PriceFrom $586	Free Cancellation	Rating 7.4 9,156 reviews	Search United Airlines flights
Austrian Airlines	PriceFrom $588	Free Cancellation	Rating 7.5 893 reviews	Search Austrian Airlines flights
Lufthansa	PriceFrom $588	Free Cancellation	Rating 6.8 7,711 reviews	Search Lufthansa flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,128 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.