CA $536 Cheap Flights from Boston (BOS) to Sofia (SOF)

View CA $536 flight on Mon, Apr 5, 2027Opens 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 $536 for one-way flights and CA $899 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $899 Roundtrip, found 3 days ago
CA $899
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $899 found 3 days ago
Lufthansa
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $903 Roundtrip, found 3 days ago
CA $903
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $903 found 3 days ago
Austrian Airlines
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $909 Roundtrip, found 3 days ago
CA $909
Roundtrip
found 3 days ago
Select Austrian Airlines flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $909 found 3 days ago
Air Canada
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $915 Roundtrip, found 3 days ago
CA $915
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $915 found 3 days ago
Swiss International Air Lines
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $929 Roundtrip, found 3 days ago
CA $929
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $929 found 3 days ago
Swiss International Air Lines
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $931 Roundtrip, found 3 days ago
CA $931
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $931 found 3 days ago
Lufthansa
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $933 Roundtrip, found 3 days ago
CA $933
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $933 found 3 days ago
Lufthansa
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $935 Roundtrip, found 3 days ago
CA $935
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $935 found 3 days ago
Austrian Airlines
Mon, Apr 5 - Mon, Apr 12
BOS
Boston
SOF
Sofia
CA $939 Roundtrip, found 3 days ago
CA $939
Roundtrip
found 3 days ago
Select Austrian Airlines flight, departing Mon, Apr 5 from Boston to Sofia, returning Mon, Apr 12, priced at CA $939 found 3 days ago
British Airways
Thu, Sep 3 - Wed, Oct 14
BOS
Boston
SOF
Sofia
CA $1,044 Roundtrip, found 10 hours ago
CA $1,044
Roundtrip
found 10 hours ago
Select British Airways flight, departing Thu, Sep 3 from Boston to Sofia, returning Wed, Oct 14, priced at CA $1,044 found 10 hours ago

Alternative airports near Sofia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sofia Airport SOF. Cheapest and Closest option available. Average driving time to city centre is 11 minutes. Flights from CA $8,943
SOF
Sofia Airport
CheapestClosest
Average driving time to city centre11 min
Flights from CA $8,943

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

January is typically the cheapest month to fly

From CA $847 - CA $1,129 per traveller.

Frequently asked questions

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 of approximately £380. This is about 34% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. October and November are also good months to find deals on this route.*Averages based on flights available on Expedia in the last year.
How do I find cheap flights from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
To find a cheap flight from Boston, MA (BOS-Logan Intl.) 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)?
Based on booking data from the past year, 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 £380. These months fall outside the peak summer travel season, which often means fewer crowds and more availability, allowing you to find better deals.*Prices based on flights available on Expedia in the last year.
How many flights per day from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
There are approximately 85 connecting flights per day from Boston Logan International (BOS) to Sofia (SOF). Some common connection points include Pearson Intl. (YYZ), John F. Kennedy Intl. (JFK), and O'Hare Intl. (ORD).
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 find the most flights from Boston, MA (BOS-Logan Intl.) to Sofia (SOF) on a Friday, with around 71 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta, United Airlines, and American Airlines. Friday sees notably more flight options compared to other days of the week, offering you a good selection.
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. About 46% of passengers prefer this time. Many major carriers, including Lufthansa, Austrian Airlines and SWISS, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll arrive at your destination ready to settle in.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
Flying from BOS to SOF with a connection usually takes about 12 hours, traveling roughly 4,524 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to Sofia (SOF)?
Select the "Business class" and "First class" filters when looking for BOS to SOF flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
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-Logan Intl.) to Sofia (SOF)?
If you booked your Boston, MA (BOS-Logan Intl.) 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, British Airways, ITA Airways, Iberia, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, Turkish Airlines
Roundtrip price
CA $898
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 $899 rising to CA $1,044.  

Here are more money-saving tips: 

  • Fly in April 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.