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.

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?

Air Serbia, Qatar Airways, and Lufthansa are the most popular carriers operating from Sofia to Boston Logan Intl

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

Amsterdam (AMS) was the most common stop: 24% 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 Munich (MUC) offer the lowest average round-trip price of $625.

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 October 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.

$386 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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7:00 am - 2:20 pmSOF-BOS

13h 20m1 stop

6:30 pm - 1:55 pmBOS-SOF

12h 25m1 stop

$637Multiple Airlines

Find Deal

Fri, Oct 31 - Thu, Nov 13

7:55 am - 2:05 pmSOF-BOS

13h 10m1 stop

6:25 pm - 11:50 amBOS-SOF

10h 25m1 stop

$638Austrian Airlines

Find Deal

Tue, Dec 23 - Fri, Jan 2

7:00 am - 2:20 pmSOF-BOS

13h 20m1 stop

6:30 pm - 1:55 pmBOS-SOF

12h 25m1 stop

$639Multiple Airlines

Find Deal

Fri, Oct 31 - Thu, Nov 13

7:00 am - 1:20 pmSOF-BOS

13h 20m1 stop

7:10 pm - 2:05 pmBOS-SOF

11h 55m1 stop

$644KLM

Find Deal

Thu, Nov 20 - Wed, Dec 10

7:00 am - 1:20 pmSOF-BOS

13h 20m1 stop

7:10 pm - 2:05 pmBOS-SOF

11h 55m1 stop

$645KLM

Find Deal

Thu, Nov 20 - Wed, Dec 10

6:10 am - 11:42 pmSOF-BOS

23h 32m2 stops

11:59 am - 1:50 pmBOS-SOF

18h 51m2 stops

$670United Airlines

Find Deal

Fri, Oct 31 - Thu, Nov 13

6:05 am - 7:35 pmSOF-BOS

19h 30m1 stop

8:40 pm - 10:45 pmBOS-SOF

19h 05m1 stop

$674Lufthansa

Find Deal

Fri, Oct 31 - Thu, Nov 13

6:10 am - 11:42 pmSOF-BOS

23h 32m2 stops

3:40 pm - 1:50 pmBOS-SOF

15h 10m2 stops

$675United Airlines

Find Deal

Fri, Oct 31 - Thu, Nov 13

9:35 am - 6:05 pmSOF-BOS

15h 30m1 stop

8:00 pm - 8:50 pmBOS-SOF

17h 50m1 stop

$677Turkish Airlines

Find Deal

Tue, Nov 11 - Thu, Nov 13

9:35 am - 6:05 pmSOF-BOS

15h 30m1 stop

8:00 pm - 8:45 amBOS-SOF

29h 45m1 stop

$701Turkish Airlines

Find Deal

Fri, Dec 19 - Sat, Jan 17

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets

United Airlines

Oct 31

SOF6:10 amSofia

23h 32m

2 stops

BOS11:42 pmBoston Logan Intl

Nov 13

BOS11:59 amBoston Logan Intl

18h 51m

2 stops

SOF1:50 pmSofia

$670

Find similar

United Airlines

Oct 30

SOF6:00 amSofia

18h 48m

2 stops

BOS6:48 pmBoston Logan Intl

Nov 12

BOS5:30 amBoston Logan Intl

29h 30m

2 stops

SOF6:00 pmSofia

$674

Find similar

United Airlines

Oct 31

SOF6:10 amSofia

23h 32m

2 stops

BOS11:42 pmBoston Logan Intl

Nov 13

BOS3:40 pmBoston Logan Intl

15h 10m

2 stops

SOF1:50 pmSofia

$675

Find similar

Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets

Lufthansa

Oct 31

SOF6:05 amSofia

19h 30m

1 stop

BOS7:35 pmBoston Logan Intl

Nov 13

BOS8:40 pmBoston Logan Intl

19h 05m

1 stop

SOF10:45 pmSofia

$674

Find similar

Lufthansa

Oct 24

SOF6:15 amSofia

16h 45m

1 stop

BOS4:00 pmBoston Logan Intl

Jun 21

BOS10:00 pmBoston Logan Intl

12h 55m

1 stop

SOF5:55 pmSofia

$737

Find similar

Lufthansa

Oct 25

SOF7:25 pmSofia

26h 00m

2 stops

BOS2:25 pmBoston Logan Intl

Feb 27

BOS2:16 pmBoston Logan Intl

20h 59m

2 stops

SOF6:15 pmSofia

$909

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 10/31

7:00 am-2:20 pm

1 stop13h 20m

Boston Logan Intl

Thu 11/13

6:30 pm-1:55 pm

1 stop12h 25m

$637

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 12/23

7:55 am-2:05 pm

1 stop13h 10m

Boston Logan Intl

Fri 1/2

6:25 pm-11:50 am

1 stop10h 25m

$638

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 10/31

7:00 am-2:20 pm

1 stop13h 20m

Boston Logan Intl

Thu 11/13

6:30 pm-1:55 pm

1 stop12h 25m

$639

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 11/20

7:00 am-1:20 pm

1 stop13h 20m

Boston Logan Intl

Wed 12/10

7:10 pm-2:05 pm

1 stop11h 55m

$644

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 11/20

7:00 am-1:20 pm

1 stop13h 20m

Boston Logan Intl

Wed 12/10

7:10 pm-2:05 pm

1 stop11h 55m

$645

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 10/31

6:10 am-11:42 pm

2 stops23h 32m

Boston Logan Intl

Thu 11/13

11:59 am-1:50 pm

2 stops18h 51m

$670

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 10/31

6:05 am-7:35 pm

1 stop19h 30m

Boston Logan Intl

Thu 11/13

8:40 pm-10:45 pm

1 stop19h 05m

$674

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 10/31

6:10 am-11:42 pm

2 stops23h 32m

Boston Logan Intl

Thu 11/13

3:40 pm-1:50 pm

2 stops15h 10m

$675

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 11/11

9:35 am-6:05 pm

1 stop15h 30m

Boston Logan Intl

Thu 11/13

8:00 pm-8:50 pm

1 stop17h 50m

$677

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 12/19

9:35 am-6:05 pm

1 stop15h 30m

Boston Logan Intl

Sat 1/17

8:00 pm-8:45 am

1 stop29h 45m

$701

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 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 $692 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 $561 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 13h 10m.
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 October 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 (33% of total bookings). The next most popular airlines are KLM (18%), United Airlines (13%), and Turkish Airlines (12%).

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 $494	Free Cancellation	Rating 6.7 7,457 reviews	Search British Airways flights
Turkish Airlines	PriceFrom $533	Free Cancellation	Rating 7.3 4,010 reviews	Search Turkish Airlines flights
Air France	PriceFrom $538	Free Cancellation	Rating 7.4 1,476 reviews	Search Air France flights
KLM	PriceFrom $545	Free Cancellation	Rating 7.7 1,404 reviews	Search KLM flights
Austrian Airlines	PriceFrom $567	Free Cancellation	Rating 7.6 855 reviews	Search Austrian Airlines flights
Lufthansa	PriceFrom $580	Free Cancellation	Rating 6.8 7,497 reviews	Search Lufthansa flights
United Airlines	PriceFrom $583	Free Cancellation	Rating 7.4 8,982 reviews	Search United Airlines flights
SWISS	PriceFrom $594	Free Cancellation	Rating 7.5 1,772 reviews	Search SWISS flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,068 reviews	Search ITA Airways flights

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Hampton

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Kennebunkport

Cambridge

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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.