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

Flights via London (LHR) offer the lowest average round-trip price of $580.

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

British Airways and United Airlines are the most popular carriers 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 9 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: 24% 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.

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 November 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.

$354 Cheap Flights from Sofia to Boston in 2025/26

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 $637 to $762. The lowest price recently found on this route was $493.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Sofia to Boston

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:45 pm - 9:55 pmSOF-BOS

35h 10m1 stop

11:40 pm - 11:30 pmBOS-SOF

17h 50m1 stop

$493Multiple Airlines

Find Deal

Mon, Mar 16 - Thu, Mar 19

7:30 pm - 9:55 pmSOF-BOS

32h 25m2 stops

11:40 pm - 11:30 pmBOS-SOF

17h 50m1 stop

$519Multiple Airlines

Find Deal

Wed, Mar 11 - Thu, Mar 19

6:00 am - 9:55 pmSOF-BOS

21h 55m2 stops

11:40 pm - 11:30 pmBOS-SOF

17h 50m1 stop

$556Multiple Airlines

Find Deal

Thu, Mar 12 - Thu, Mar 19

2:25 pm - 11:42 pmSOF-BOS

16h 17m2 stops

8:40 pm - 10:45 pmBOS-SOF

19h 05m1 stop

$625Lufthansa

Find Deal

Sat, Nov 22 - Fri, Nov 28

7:00 am - 2:20 pmSOF-BOS

13h 20m1 stop

8:10 pm - 2:05 pmBOS-SOF

11h 55m1 stop

$640KLM

Find Deal

Thu, Mar 12 - Thu, Mar 19

7:00 am - 6:23 pmSOF-BOS

17h 23m2 stops

8:10 pm - 2:05 pmBOS-SOF

11h 55m1 stop

$646KLM

Find Deal

Sat, Mar 14 - Thu, Mar 19

2:00 pm - 7:35 pmSOF-BOS

11h 35m1 stop

9:40 pm - 6:20 pmBOS-SOF

14h 40m1 stop

$647Lufthansa

Find Deal

Fri, Mar 13 - Fri, Mar 20

6:25 am - 1:25 pmSOF-BOS

14h 00m1 stop

9:30 am - 6:20 pmBOS-SOF

25h 50m2 stops

$654United Airlines

Find Deal

Sat, Nov 22 - Sun, Dec 7

7:00 am - 2:30 pmSOF-BOS

13h 30m1 stop

1:10 pm - 1:55 pmBOS-SOF

18h 45m2 stops

$657Air France

Find Deal

Sat, Mar 14 - Fri, Mar 20

6:10 am - 6:41 pmSOF-BOS

18h 31m2 stops

9:40 pm - 6:20 pmBOS-SOF

14h 40m1 stop

$659United Airlines

Find Deal

Wed, Mar 11 - Tue, Mar 17

Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets

Lufthansa

Nov 22

SOF2:25 pmSofia

16h 17m

2 stops

BOS11:42 pmBoston Logan Intl

Nov 28

BOS8:40 pmBoston Logan Intl

19h 05m

1 stop

SOF10:45 pmSofia

$625

Find similar

Lufthansa

Mar 13

SOF2:00 pmSofia

11h 35m

1 stop

BOS7:35 pmBoston Logan Intl

Mar 20

BOS9:40 pmBoston Logan Intl

14h 40m

1 stop

SOF6:20 pmSofia

$647

Find similar

Lufthansa

Nov 22

SOF2:00 pmSofia

11h 35m

1 stop

BOS6:35 pmBoston Logan Intl

Dec 7

BOS7:07 pmBoston Logan Intl

20h 38m

2 stops

SOF10:45 pmSofia

$664

Find similar

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets

United Airlines

Nov 22

SOF6:25 amSofia

14h 00m

1 stop

BOS1:25 pmBoston Logan Intl

Dec 7

BOS9:30 amBoston Logan Intl

25h 50m

2 stops

SOF6:20 pmSofia

$654

Find similar

United Airlines

Nov 20

SOF6:00 amSofia

14h 25m

1 stop

BOS1:25 pmBoston Logan Intl

Dec 10

BOS9:30 amBoston Logan Intl

30h 15m

2 stops

SOF10:45 pmSofia

$659

Find similar

United Airlines

Mar 10

SOF6:00 amSofia

18h 41m

2 stops

BOS6:41 pmBoston Logan Intl

Mar 21

BOS6:30 pmBoston Logan Intl

17h 50m

2 stops

SOF6:20 pmSofia

$660

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 3/16

4:45 pm-9:55 pm

1 stop35h 10m

Boston Logan Intl

Thu 3/19

11:40 pm-11:30 pm

1 stop17h 50m

$493

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 3/11

7:30 pm-9:55 pm

2 stops32h 25m

Boston Logan Intl

Thu 3/19

11:40 pm-11:30 pm

1 stop17h 50m

$519

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 3/12

6:00 am-9:55 pm

2 stops21h 55m

Boston Logan Intl

Thu 3/19

11:40 pm-11:30 pm

1 stop17h 50m

$556

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 11/22

2:25 pm-11:42 pm

2 stops16h 17m

Boston Logan Intl

Fri 11/28

8:40 pm-10:45 pm

1 stop19h 05m

$625

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 3/12

7:00 am-2:20 pm

1 stop13h 20m

Boston Logan Intl

Thu 3/19

8:10 pm-2:05 pm

1 stop11h 55m

$640

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 3/14

7:00 am-6:23 pm

2 stops17h 23m

Boston Logan Intl

Thu 3/19

8:10 pm-2:05 pm

1 stop11h 55m

$646

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 3/13

2:00 pm-7:35 pm

1 stop11h 35m

Boston Logan Intl

Fri 3/20

9:40 pm-6:20 pm

1 stop14h 40m

$647

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 11/22

6:25 am-1:25 pm

1 stop14h 00m

Boston Logan Intl

Sun 12/7

9:30 am-6:20 pm

2 stops25h 50m

$654

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 3/14

7:00 am-2:30 pm

1 stop13h 30m

Boston Logan Intl

Fri 3/20

1:10 pm-1:55 pm

2 stops18h 45m

$657

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 3/11

6:10 am-6:41 pm

2 stops18h 31m

Boston Logan Intl

Tue 3/17

9:40 pm-6:20 pm

1 stop14h 40m

$659

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, 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 $693 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.

Can stopping save me money on Sofia to Boston flights?

You could potentially save up to 27% 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

Direct flights	None

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 9 operators available for flights from Sofia Airport to Boston Logan Intl Airport as of November 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 (34% of total bookings). The next most popular airlines are Turkish Airlines (14%), United Airlines (13%), and KLM (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 7,500 reviews	Search British Airways flights
Turkish Airlines	PriceFrom $533	Free Cancellation	Rating 7.3 4,032 reviews	Search Turkish Airlines flights
Air France	PriceFrom $538	Free Cancellation	Rating 7.4 1,484 reviews	Search Air France flights
KLM	PriceFrom $556	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights
Lufthansa	PriceFrom $580	Free Cancellation	Rating 6.8 7,558 reviews	Search Lufthansa flights
United Airlines	PriceFrom $583	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
Austrian Airlines	PriceFrom $588	Free Cancellation	Rating 7.6 865 reviews	Search Austrian Airlines flights
SWISS	PriceFrom $594	Free Cancellation	Rating 7.5 1,779 reviews	Search SWISS flights
ITA Airways	PriceFrom $819	Free Cancellation	Rating 6.7 1,081 reviews	Search ITA Airways flights

Hampton Beach

Salem

Ogunquit

Old Orchard Beach

Hampton

York Beach

Plymouth

Kennebunkport

Cambridge

South Yarmouth

Narragansett

Nashua

Gloucester

Falmouth

Laconia

Brockton

Concord

Everett

Sturbridge

Chatham

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.