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 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.

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 layover airport offers the lowest fares from Sofia to Boston?

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

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.

$293 Cheap Flights from Sofia to Boston in 2026

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Find the cheapest flights from Sofia to Boston

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:25 pm - 9:55 pm

SOF

BOS

34h 30m

1 stop

11:45 pm - 3:40 pm

BOS

SOF

33h 55m

2 stops

$533Multiple Airlines

Sun, Mar 8 - Sun, Mar 22

6:00 am - 8:55 pm

SOF

BOS

21h 55m

2 stops

8:05 pm - 11:10 pm

BOS

SOF

20h 05m

1 stop

$562Multiple Airlines

Thu, Mar 5 - Tue, May 12

11:15 am - 8:55 pm

SOF

BOS

40h 40m

2 stops

9:50 pm - 3:15 pm

BOS

SOF

10h 25m

1 stop

$581Multiple Airlines

Wed, Mar 4 - Wed, Nov 4

5:45 am - 8:55 pm

SOF

BOS

46h 10m

2 stops

10:40 pm - 10:10 pm

BOS

SOF

16h 30m

1 stop

$587Multiple Airlines

Sun, Feb 15 - Mon, Feb 23

6:00 am - 9:05 pm

SOF

BOS

22h 05m

2 stops

5:20 pm - 3:00 pm

BOS

SOF

14h 40m

1 stop

$590Multiple Airlines

Wed, Apr 29 - Sun, May 3

5:45 am - 8:55 pm

SOF

BOS

46h 10m

2 stops

9:15 pm - 1:50 pm

BOS

SOF

33h 35m

1 stop

$594Multiple Airlines

Sun, Feb 15 - Sun, Mar 1

2:20 pm - 8:05 pm

SOF

BOS

12h 45m

1 stop

7:25 am - 1:25 pm

BOS

SOF

23h 00m

1 stop

$598British Airways

Fri, May 15 - Thu, May 28

11:15 pm - 8:55 pm

SOF

BOS

52h 40m

2 stops

9:15 pm - 1:50 pm

BOS

SOF

33h 35m

1 stop

$599Multiple Airlines

Sat, Feb 14 - Sun, Mar 1

9:25 pm - 9:29 pm

SOF

BOS

31h 04m

2 stops

7:31 pm - 8:30 pm

BOS

SOF

41h 59m

2 stops

$604British Airways

Wed, Jun 17 - Mon, Jul 6

4:45 pm - 8:55 pm

SOF

BOS

35h 10m

1 stop

10:40 pm - 11:30 pm

BOS

SOF

17h 50m

1 stop

$613Multiple Airlines

Sun, Feb 15 - Mon, Feb 23

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets

United Airlines

Jun 22

SOF6:20 amSofia

16h 20m

1 stop

BOS3:40 pmBoston Logan Intl

Jul 13

BOS8:05 pmBoston Logan Intl

20h 05m

1 stop

SOF11:10 pmSofia

$690

United Airlines

Jun 17

SOF1:50 pmSofia

13h 20m

1 stop

BOS8:10 pmBoston Logan Intl

Jul 5

BOS10:00 pmBoston Logan Intl

13h 10m

1 stop

SOF6:10 pmSofia

$691

United Airlines

Jun 22

SOF6:20 amSofia

15h 21m

2 stops

BOS2:41 pmBoston Logan Intl

Jul 15

BOS8:05 pmBoston Logan Intl

20h 05m

1 stop

SOF11:10 pmSofia

$693

Air Canada flights from Sofia to Boston

Our best Air Canada deals on Sofia to Boston flight tickets

Air Canada

Jun 19

SOF6:20 amSofia

34h 30m

2 stops

BOS9:50 amBoston Logan Intl

Jul 7

BOS10:40 amBoston Logan Intl

17h 20m

2 stops

SOF11:00 amSofia

$698

Air Canada

Jan 29

SOF6:05 amSofia

23h 32m

3 stops

BOS10:37 pmBoston Logan Intl

Jul 28

BOS6:50 pmBoston Logan Intl

16h 10m

2 stops

SOF6:00 pmSofia

$954

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 3/8

5:25 pm-9:55 pm

1 stop34h 30m

Boston Logan Intl

Sun 3/22

11:45 pm-3:40 pm

2 stops33h 55m

$533

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 3/5

6:00 am-8:55 pm

2 stops21h 55m

Boston Logan Intl

Tue 5/12

8:05 pm-11:10 pm

1 stop20h 05m

$562

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 3/4

11:15 am-8:55 pm

2 stops40h 40m

Boston Logan Intl

Wed 11/4

9:50 pm-3:15 pm

1 stop10h 25m

$581

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 2/15

5:45 am-8:55 pm

2 stops46h 10m

Boston Logan Intl

Mon 2/23

10:40 pm-10:10 pm

1 stop16h 30m

$587

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 4/29

6:00 am-9:05 pm

2 stops22h 05m

Boston Logan Intl

Sun 5/3

5:20 pm-3:00 pm

1 stop14h 40m

$590

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 2/15

5:45 am-8:55 pm

2 stops46h 10m

Boston Logan Intl

Sun 3/1

9:15 pm-1:50 pm

1 stop33h 35m

$594

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 5/15

2:20 pm-8:05 pm

1 stop12h 45m

Boston Logan Intl

Thu 5/28

7:25 am-1:25 pm

1 stop23h 00m

$598

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 2/14

11:15 pm-8:55 pm

2 stops52h 40m

Boston Logan Intl

Sun 3/1

9:15 pm-1:50 pm

1 stop33h 35m

$599

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 6/17

9:25 pm-9:29 pm

2 stops31h 04m

Boston Logan Intl

Mon 7/6

7:31 pm-8:30 pm

2 stops41h 59m

$604

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 2/15

4:45 pm-8:55 pm

1 stop35h 10m

Boston Logan Intl

Mon 2/23

10:40 pm-11:30 pm

1 stop17h 50m

$613

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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, 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 $618. 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 $704 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 28% 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 1% 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	13h 20m
Direct flights	None

The fastest flight from Sofia to Boston takes 13h 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 13h 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 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 (16%), 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 $520	Free Cancellation	Rating 7.3 4,207 reviews	Search Turkish Airlines flights
Air France	PriceFrom $561	Free Cancellation	Rating 7.4 1,526 reviews	Search Air France flights
KLM	PriceFrom $562	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM flights
United Airlines	PriceFrom $586	Free Cancellation	Rating 7.4 9,204 reviews	Search United Airlines flights
Lufthansa	PriceFrom $586	Free Cancellation	Rating 6.8 7,748 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom $588	Free Cancellation	Rating 7.5 895 reviews	Search Austrian Airlines flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,131 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.