£237 Cheap Flights from Boston (BOS) to Sofia (SOF)

View £237 flight on Wed, 12 Aug 2026Opens in a new window

Popular airlines from Logan International Airport (BOS) to Sofia Airport (SOF)

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Cheap Flights from Boston (BOS) to Sofia (SOF)

Prices were available within the past 7 days and start at £237 for one-way flights and £531 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air France
Wed, 12 Aug - Mon, 17 Aug
BOS
Boston
SOF
Sofia
£531 Return, found 2 days ago
£531
Return
found 2 days ago
Select Air France flight, departing Wed, 12 Aug from Boston to Sofia, returning Mon, 17 Aug, priced at £531 found 2 days ago
Lufthansa
Wed, 12 Aug - Mon, 17 Aug
BOS
Boston
SOF
Sofia
£559 Return, found 2 days ago
£559
Return
found 2 days ago
Select Lufthansa flight, departing Wed, 12 Aug from Boston to Sofia, returning Mon, 17 Aug, priced at £559 found 2 days ago
Lufthansa
Wed, 12 Aug - Mon, 17 Aug
BOS
Boston
SOF
Sofia
£564 Return, found 2 days ago
£564
Return
found 2 days ago
Select Lufthansa flight, departing Wed, 12 Aug from Boston to Sofia, returning Mon, 17 Aug, priced at £564 found 2 days ago
United
Fri, 25 Sept - Tue, 29 Sept
BOS
Boston
SOF
Sofia
£570 Return, found 6 days ago
£570
Return
found 6 days ago
Select United flight, departing Fri, 25 Sept from Boston to Sofia, returning Tue, 29 Sept, priced at £570 found 6 days ago
United
Fri, 25 Sept - Tue, 29 Sept
BOS
Boston
SOF
Sofia
£572 Return, found 6 days ago
£572
Return
found 6 days ago
Select United flight, departing Fri, 25 Sept from Boston to Sofia, returning Tue, 29 Sept, priced at £572 found 6 days ago
Lufthansa
Fri, 25 Sept - Tue, 29 Sept
BOS
Boston
SOF
Sofia
£572 Return, found 6 days ago
£572
Return
found 6 days ago
Select Lufthansa flight, departing Fri, 25 Sept from Boston to Sofia, returning Tue, 29 Sept, priced at £572 found 6 days ago
Lufthansa
Fri, 25 Sept - Tue, 29 Sept
BOS
Boston
SOF
Sofia
£574 Return, found 6 days ago
£574
Return
found 6 days ago
Select Lufthansa flight, departing Fri, 25 Sept from Boston to Sofia, returning Tue, 29 Sept, priced at £574 found 6 days ago
Air Canada
Wed, 12 Aug - Mon, 17 Aug
BOS
Boston
SOF
Sofia
£578 Return, found 2 days ago
£578
Return
found 2 days ago
Select Air Canada flight, departing Wed, 12 Aug from Boston to Sofia, returning Mon, 17 Aug, priced at £578 found 2 days ago
Lufthansa
Fri, 25 Sept - Tue, 29 Sept
BOS
Boston
SOF
Sofia
£580 Return, found 6 days ago
£580
Return
found 6 days ago
Select Lufthansa flight, departing Fri, 25 Sept from Boston to Sofia, returning Tue, 29 Sept, priced at £580 found 6 days ago
KLM
Wed, 12 Aug - Mon, 17 Aug
BOS
Boston
SOF
Sofia
£582 Return, found 2 days ago
£582
Return
found 2 days ago
Select KLM flight, departing Wed, 12 Aug from Boston to Sofia, returning Mon, 17 Aug, priced at £582 found 2 days ago

Frequently asked questions

How much is a flight from Logan Intl. Airport (BOS) to SOF?
Based on fares advertised within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between Logan Intl. Airport and Sofia Airport (SOF) start from £531. Make your booking today to get the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Logan Intl. Airport to Sofia Intl. Airport?
This varies between airlines, as each one has its own set of terms and conditions. Head to the Customer Service Portal, where you'll find instructions on how to cancel your flight online.
How do I find cheap flights from BOS to Sofia Airport (SOF) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for BOS to Sofia Intl. Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Logan Intl. Airport to Sofia Airport (SOF)?
With a flight distance of 7,300 kilometres between Boston and Sofia, this is a long-haul flight. Be sure to keep well hydrated and move your feet and legs every now and then.
Which airlines fly direct from Logan Intl. Airport (BOS) to Sofia Intl. Airport?
You won't find any airlines operating directly between Logan Intl. Airport and SOF, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a good way to break up a trip!
Are Logan Intl. Airport (BOS) to SOF flight tickets cheaper when they're purchased at the last minute?
Airline tickets from BOS to Sofia Intl. Airport are available up to a year prior to departure on Expedia. And although you may pick up a fantastic last-minute deal, it's not something you should count on. Also, booking your flights well in advance means you'll have more choices — and you can avoid being wedged in the dreaded middle seat! We're always updating our fares to bring you the best bargains, so check back often for all the latest specials.

Travel information

Origin airport
Logan Intl.
Destination airport
Sofia
Return price
£531
Distance
7238 km

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