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 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 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

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 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.

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.

$412 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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7:55 pm - 2:35 pm

SOF

BOS

25h 40m2 stops

6:05 pm - 10:50 pm

BOS

SOF

21h 45m2 stops

$655Multiple Airlines

Thu, Jan 22 - Wed, Feb 4

5:25 pm - 2:35 pm

SOF

BOS

28h 10m2 stops

6:05 pm - 12:40 am

BOS

SOF

23h 35m3 stops

$658Multiple Airlines

Sun, Feb 1 - Sun, Feb 8

6:30 am - 9:05 pm

SOF

BOS

21h 35m2 stops

11:50 pm - 1:30 am

BOS

SOF

18h 40m1 stop

$660Multiple Airlines

Tue, Jun 16 - Sun, Aug 23

2:30 pm - 8:10 pm

SOF

BOS

36h 40m3 stops

7:50 pm - 2:55 am

BOS

SOF

24h 05m2 stops

$662Multiple Airlines

Thu, Jan 22 - Wed, Feb 4

5:25 pm - 8:55 pm

SOF

BOS

34h 30m1 stop

9:15 pm - 3:40 pm

BOS

SOF

35h 25m2 stops

$666Multiple Airlines

Sun, Feb 1 - Sun, Feb 8

6:00 am - 1:35 pm

SOF

BOS

14h 35m1 stop

8:40 pm - 6:20 pm

BOS

SOF

14h 40m1 stop

$671Lufthansa

Thu, Jan 22 - Wed, Feb 4

6:55 pm - 9:05 pm

SOF

BOS

33h 10m2 stops

11:00 pm - 1:30 am

BOS

SOF

19h 30m1 stop

$672Multiple Airlines

Mon, Jun 15 - Tue, Aug 25

6:50 pm - 9:05 pm

SOF

BOS

33h 15m1 stop

11:00 pm - 1:30 am

BOS

SOF

19h 30m1 stop

$673Multiple Airlines

Mon, Jun 15 - Tue, Aug 25

6:00 am - 1:35 pm

SOF

BOS

14h 35m1 stop

4:15 pm - 1:15 pm

BOS

SOF

14h 00m2 stops

$680Lufthansa

Thu, Jan 22 - Wed, Feb 4

4:45 pm - 4:19 pm

SOF

BOS

54h 34m2 stops

10:50 pm - 1:30 am

BOS

SOF

19h 40m1 stop

$681Multiple Airlines

Tue, Jan 27 - Wed, Apr 8

Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets

Lufthansa

Jan 22

SOF6:00 amSofia

14h 35m

1 stop

BOS1:35 pmBoston Logan Intl

Feb 4

BOS8:40 pmBoston Logan Intl

14h 40m

1 stop

SOF6:20 pmSofia

$671

Find similar

Lufthansa

Jan 22

SOF6:00 amSofia

14h 35m

1 stop

BOS1:35 pmBoston Logan Intl

Feb 4

BOS4:15 pmBoston Logan Intl

14h 00m

2 stops

SOF1:15 pmSofia

$680

Find similar

Lufthansa

Jan 21

SOF6:10 amSofia

14h 25m

1 stop

BOS1:35 pmBoston Logan Intl

Apr 8

BOS5:45 pmBoston Logan Intl

12h 40m

1 stop

SOF1:25 pmSofia

$687

Find similar

ITA Airways flights from Sofia to Boston

Our best ITA Airways deals on Sofia to Boston flight tickets

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

$688

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

$689

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 1/22

7:55 pm-2:35 pm

2 stops25h 40m

Boston Logan Intl

Wed 2/4

6:05 pm-10:50 pm

2 stops21h 45m

$655

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 2/1

5:25 pm-2:35 pm

2 stops28h 10m

Boston Logan Intl

Sun 2/8

6:05 pm-12:40 am

3 stops23h 35m

$658

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 6/16

6:30 am-9:05 pm

2 stops21h 35m

Boston Logan Intl

Sun 8/23

11:50 pm-1:30 am

1 stop18h 40m

$660

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 1/22

2:30 pm-8:10 pm

3 stops36h 40m

Boston Logan Intl

Wed 2/4

7:50 pm-2:55 am

2 stops24h 05m

$662

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 2/1

5:25 pm-8:55 pm

1 stop34h 30m

Boston Logan Intl

Sun 2/8

9:15 pm-3:40 pm

2 stops35h 25m

$666

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 1/22

6:00 am-1:35 pm

1 stop14h 35m

Boston Logan Intl

Wed 2/4

8:40 pm-6:20 pm

1 stop14h 40m

$671

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 6/15

6:55 pm-9:05 pm

2 stops33h 10m

Boston Logan Intl

Tue 8/25

11:00 pm-1:30 am

1 stop19h 30m

$672

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 6/15

6:50 pm-9:05 pm

1 stop33h 15m

Boston Logan Intl

Tue 8/25

11:00 pm-1:30 am

1 stop19h 30m

$673

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 1/22

6:00 am-1:35 pm

1 stop14h 35m

Boston Logan Intl

Wed 2/4

4:15 pm-1:15 pm

2 stops14h 00m

$680

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 1/27

4:45 pm-4:19 pm

2 stops54h 34m

Boston Logan Intl

Wed 4/8

10:50 pm-1:30 am

1 stop19h 40m

$681

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 1% 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	15h 20m
Direct flights	None

The fastest flight from Sofia to Boston takes 15h 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 15h 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 4,103 reviews	Search Turkish Airlines flights
Air France	PriceFrom $538	Free Cancellation	Rating 7.4 1,508 reviews	Search Air France flights
KLM	PriceFrom $556	Free Cancellation	Rating 7.7 1,428 reviews	Search KLM flights
Lufthansa	PriceFrom $585	Free Cancellation	Rating 6.8 7,637 reviews	Search Lufthansa flights
United Airlines	PriceFrom $586	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
Austrian Airlines	PriceFrom $590	Free Cancellation	Rating 7.6 879 reviews	Search Austrian Airlines flights
SWISS	PriceFrom $594	Free Cancellation	Rating 7.5 1,815 reviews	Search SWISS flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,108 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.