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CA $550 Cheap Flights from Boston (BOS) to Sofia (SOF)

View CA $550 flight on Tue, Dec 29, 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 CA $550 for one-way flights and CA $1,127 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Wed, Jan 6 - Fri, Jan 22
BOS
Boston
SOF
Sofia
CA $1,127 Roundtrip, found 1 day ago
CA $1,127
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Wed, Jan 6 from Boston to Sofia, returning Fri, Jan 22, priced at CA $1,127 found 1 day ago
United
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,141 Roundtrip, found 1 day ago
CA $1,141
Roundtrip
found 1 day ago
Select United flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,141 found 1 day ago
United
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,145 Roundtrip, found 1 day ago
CA $1,145
Roundtrip
found 1 day ago
Select United flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,145 found 1 day ago
Lufthansa
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,145 Roundtrip, found 1 day ago
CA $1,145
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,145 found 1 day ago
Air Canada
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,146 Roundtrip, found 1 day ago
CA $1,146
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,146 found 1 day ago
United
Wed, Jan 6 - Fri, Jan 22
BOS
Boston
SOF
Sofia
CA $1,146 Roundtrip, found 1 day ago
CA $1,146
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 6 from Boston to Sofia, returning Fri, Jan 22, priced at CA $1,146 found 1 day ago
Austrian Airlines
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,146 Roundtrip, found 1 day ago
CA $1,146
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,146 found 1 day ago
Lufthansa
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,149 Roundtrip, found 1 day ago
CA $1,149
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,149 found 1 day ago
Austrian Airlines
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,150 Roundtrip, found 1 day ago
CA $1,150
Roundtrip
found 1 day ago
Select Austrian Airlines flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,150 found 1 day ago
Air Canada
Mon, Dec 7 - Fri, Dec 18
BOS
Boston
SOF
Sofia
CA $1,151 Roundtrip, found 1 day ago
CA $1,151
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Dec 7 from Boston to Sofia, returning Fri, Dec 18, priced at CA $1,151 found 1 day ago

Find the cheapest month to fly from Boston (BOS) to Sofia (SOF)

March is typically the cheapest month to fly

From CA $554 - CA $913 per traveller.

Frequently asked questions

How much does a flight from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) cost?
You can find cheap one-way flights from CA $550 and cheap return flights from CA $1,127 BOS to SOF with Expedia. Return flights often range between CA$931 and CA$5900. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BOS to SOF ticket fares go up or down.
What is the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
January is typically the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to Sofia (SOF), with average return fares around CA$705. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) include October and November.
Which airlines fly direct from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
Enter BOS to SOF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Boston, MA (BOS) to Sofia (SOF)?
To find a cheap flight from Boston, MA (BOS) to Sofia (SOF), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
The cheapest months to fly from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) are typically January and November, with average return flights costing around CA$705. These months often offer lower fares because they fall outside of peak travel seasons, giving you a more budget-friendly option for your trip.
How many flights per day from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
There are around 79 connecting flights per day from Boston Logan International (BOS) to Sofia (SOF). Some common connection points include Pearson International (YYZ), John F. Kennedy International (JFK), and Pierre Elliott Trudeau International (YUL).
What is the earliest flight from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from BOS to SOF. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
You'll typically find the most flights from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) on a Saturday, with around 70 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Delta, United, and American Airlines. Flight options are notably more plentiful on Saturdays compared to other days of the week.
What are the most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
The most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) are in the afternoon, from 3pm to 6pm. Many major carriers, including Lufthansa, Austrian Airlines and Swiss International Air Lines, offer flights during this window. Many travellers prefer this time as it allows for a full day of activities before heading to the airport, and you'll arrive in Sofia ready to start your day.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
There are no nonstop flights from Boston, MA (BOS-Logan Intl.) to Sofia (SOF). The shortest flights from Boston (BOS) to Sofia (SOF) typically involve one stop, taking around 12 hours. Flights with two or more stops usually take longer, averaging about 18 hours. The distance covered on this route is approximately 7,280 kilometres. Keep in mind that actual flight times can vary due to factors like layover duration, routing, and wind patterns.
Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
You can fly business class or first class between BOS and SOF. Airlines that offer business class service on this route include:
  • Lufthansa
  • Air France
  • Iberia
  • Turkish Airlines
  • Swiss International Air Lines
  • TAP Portugal
  • British Airways
  • Icelandair
  • Air Canada
  • KLM
  • ITA Airways
  • Aer Lingus
  • Delta
  • Austrian Airlines
  • United
  • Emirates
  • Condor
  • Virgin Atlantic
  • Copa
  • American Airlines
First class cabins are available on Lufthansa, Swiss International Air Lines, and United.
How do I earn miles on a Boston, MA (BOS-Logan Intl.) to Sofia (SOF) flight with Expedia?
It's easy to earn miles on a Boston, MA (BOS-Logan Intl.) to Sofia (SOF) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) at the last minute?
Typically, booking a last minute flight from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Boston, MA (BOS-Logan Intl.) to Sofia (SOF) flight and hotel package?
Securing a Boston, MA (BOS-Logan Intl.) to Sofia (SOF) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boston, MA (BOS) to Sofia (SOF)?
If you booked your Boston, MA (BOS) to Sofia (SOF) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Logan Intl.
Destination airport
Sofia
Airlines serving
Air Canada, Air France, Austrian Airlines, ITA Airways, Iberia, Lufthansa, Swiss International Air Lines, Turkish Airlines
Roundtrip price
CA $1,126
Distance
7238 km

Book with confidence

Boston to Sofia Flights

The easy way to book your flights from Boston to Sofia 

With Expedia, it’s simple to find and book flights to Sofia from Boston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Sofia, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Boston to Sofia today, tomorrow, or this week.  

 

Save dollars with cheap flights from Logan Intl., BOS to Sofia, SOF 

Sort your search results by price to find great deals on your flight from Boston to Sofia—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Sofia from Boston currently is just CA $1,127 rising to CA $1,151.  

Here are more money-saving tips: 

  • Fly in January when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Sofia  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Sofia from Boston 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Sofia with Expedia today.

Boston to Sofia Flights

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*Available to Expedia members.