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

Amsterdam (AMS) was the most common stop: 31% 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.

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

Flights via Munich (MUC) offer the lowest average round-trip price of $625.

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.

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

American Airlines, Austrian Airlines, and Lufthansa are the most popular carriers operating from Sofia to Boston Logan Intl

What airlines fly to Boston?

Lufthansa, KLM 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 43% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 9 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

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 9 operators available for flights from Sofia Airport to Boston Logan Intl Airport as of September 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.

$302 Cheap Flights from Sofia to Boston in 2025/26

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Find the cheapest flights from Sofia to Boston

Round-trip

One-way

Last minute

Cheap round-trip flights

9:10 pm - 11:25 amSOF-BOS

21h 15m1 stop

7:15 pm - 4:20 pmBOS-SOF

14h 05m1 stop

$561American Airlines

Find Deal

Sun, Oct 19 - Sun, Nov 23

10:05 am - 6:05 pmSOF-BOS

15h 00m1 stop

8:00 pm - 3:10 pmBOS-SOF

12h 10m1 stop

$562Turkish Airlines

Find Deal

Tue, Dec 2 - Sat, Dec 6

9:10 pm - 11:25 amSOF-BOS

21h 15m1 stop

6:28 pm - 8:20 pmBOS-SOF

18h 52m2 stops

$564British Airways

Find Deal

Sun, Oct 5 - Sat, Oct 18

9:10 pm - 11:25 amSOF-BOS

21h 15m1 stop

1:02 pm - 2:00 pmBOS-SOF

17h 58m2 stops

$566American Airlines

Find Deal

Sun, Oct 12 - Sat, Oct 25

9:10 pm - 5:15 pmSOF-BOS

27h 05m2 stops

6:28 pm - 8:20 pmBOS-SOF

18h 52m2 stops

$569British Airways

Find Deal

Sun, Oct 5 - Sat, Oct 18

7:00 am - 4:01 pmSOF-BOS

16h 01m2 stops

1:10 pm - 2:05 pmBOS-SOF

17h 55m2 stops

$633KLM

Find Deal

Fri, Nov 7 - Fri, Nov 14

12:00 pm - 8:10 pmSOF-BOS

15h 10m1 stop

10:40 am - 1:15 pmBOS-SOF

19h 35m2 stops

$645United Airlines

Find Deal

Tue, Oct 14 - Tue, Nov 4

1:50 pm - 8:10 pmSOF-BOS

13h 20m1 stop

4:20 pm - 1:50 pmBOS-SOF

14h 30m2 stops

$648United Airlines

Find Deal

Fri, Oct 17 - Thu, Nov 20

6:20 am - 6:56 pmSOF-BOS

19h 36m2 stops

2:21 pm - 6:20 pmBOS-SOF

20h 59m2 stops

$659Lufthansa

Find Deal

Tue, Oct 14 - Tue, Nov 4

7:25 pm - 3:55 pmSOF-BOS

27h 30m2 stops

2:21 pm - 1:15 pmBOS-SOF

15h 54m2 stops

$723Lufthansa

Find Deal

Fri, Oct 17 - Thu, Nov 20

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets

United Airlines

Sep 28

SOF1:55 pmSofia

13h 15m

1 stop

BOS8:10 pmBoston Logan Intl

Oct 24

BOS7:08 pmBoston Logan Intl

20h 52m

2 stops

SOF11:00 pmSofia

$645

Find similar

United Airlines

Oct 17

SOF1:50 pmSofia

13h 20m

1 stop

BOS8:10 pmBoston Logan Intl

Nov 20

BOS4:20 pmBoston Logan Intl

14h 30m

2 stops

SOF1:50 pmSofia

$648

Find similar

United Airlines

Sep 29

SOF6:15 amSofia

18h 55m

2 stops

BOS6:10 pmBoston Logan Intl

Oct 24

BOS7:08 pmBoston Logan Intl

20h 52m

2 stops

SOF11:00 pmSofia

$652

Find similar

American Airlines flights from Sofia to Boston

Our best American Airlines deals on Sofia to Boston flight tickets

American Airlines

Oct 19

SOF9:10 pmSofia

21h 15m

1 stop

BOS11:25 amBoston Logan Intl

Nov 23

BOS7:15 pmBoston Logan Intl

14h 05m

1 stop

SOF4:20 pmSofia

$561

Find similar

American Airlines

Oct 12

SOF9:10 pmSofia

21h 15m

1 stop

BOS11:25 amBoston Logan Intl

Oct 25

BOS1:02 pmBoston Logan Intl

17h 58m

2 stops

SOF2:00 pmSofia

$566

Find similar

American Airlines

Oct 12

SOF9:10 pmSofia

27h 05m

2 stops

BOS5:15 pmBoston Logan Intl

Oct 25

BOS1:02 pmBoston Logan Intl

17h 58m

2 stops

SOF2:00 pmSofia

$605

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 10/19

9:10 pm-11:25 am

1 stop21h 15m

Boston Logan Intl

Sun 11/23

7:15 pm-4:20 pm

1 stop14h 05m

$561

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 12/2

10:05 am-6:05 pm

1 stop15h 00m

Boston Logan Intl

Sat 12/6

8:00 pm-3:10 pm

1 stop12h 10m

$562

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 10/5

9:10 pm-11:25 am

1 stop21h 15m

Boston Logan Intl

Sat 10/18

6:28 pm-8:20 pm

2 stops18h 52m

$564

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 10/12

9:10 pm-11:25 am

1 stop21h 15m

Boston Logan Intl

Sat 10/25

1:02 pm-2:00 pm

2 stops17h 58m

$566

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 10/5

9:10 pm-5:15 pm

2 stops27h 05m

Boston Logan Intl

Sat 10/18

6:28 pm-8:20 pm

2 stops18h 52m

$569

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 11/7

7:00 am-4:01 pm

2 stops16h 01m

Boston Logan Intl

Fri 11/14

1:10 pm-2:05 pm

2 stops17h 55m

$633

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 10/14

12:00 pm-8:10 pm

1 stop15h 10m

Boston Logan Intl

Tue 11/4

10:40 am-1:15 pm

2 stops19h 35m

$645

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 10/17

1:50 pm-8:10 pm

1 stop13h 20m

Boston Logan Intl

Thu 11/20

4:20 pm-1:50 pm

2 stops14h 30m

$648

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 10/14

6:20 am-6:56 pm

2 stops19h 36m

Boston Logan Intl

Tue 11/4

2:21 pm-6:20 pm

2 stops20h 59m

$659

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 10/17

7:25 pm-3:55 pm

2 stops27h 30m

Boston Logan Intl

Thu 11/20

2:21 pm-1:15 pm

2 stops15h 54m

$723

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 $595. If you aren’t able to travel during the month of January, then book flights to Boston from Sofia during September instead. Flights to Boston in September, while not as cheap as those in January, still average around $624.

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 $683 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 $538 on momondo.

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

Direct flights	None

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

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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 12h 50m.
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 9 operators available for flights from Sofia Airport to Boston Logan Intl Airport as of September 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 (32% of total bookings). The next most popular airlines are KLM (19%), United Airlines (13%), and Turkish Airlines (11%).

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
British Airways	PriceFrom $518	Free Cancellation	Rating 6.6 7,361 reviews	Search British Airways flights
Turkish Airlines	PriceFrom $520	Free Cancellation	Rating 7.3 3,968 reviews	Search Turkish Airlines flights
SWISS	PriceFrom $525	Free Cancellation	Rating 7.5 1,730 reviews	Search SWISS flights
Air France	PriceFrom $538	Free Cancellation	Rating 7.4 1,469 reviews	Search Air France flights
KLM	PriceFrom $545	Free Cancellation	Rating 7.8 1,385 reviews	Search KLM flights
Austrian Airlines	PriceFrom $567	Free Cancellation	Rating 7.6 850 reviews	Search Austrian Airlines flights
United Airlines	PriceFrom $573	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights
Lufthansa	PriceFrom $576	Free Cancellation	Rating 6.8 7,407 reviews	Search Lufthansa flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,036 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.