Cheap Flights from Boston Logan International to Sofia

Compare Boston Logan International to Sofia flight deals

Find the cheapest month or even day of the year to fly to Sofia

Book the best Sofia fare with no extra fees

Flight deals from Boston Logan International to Sofia

Looking for a cheap last-minute deal or the best return flight from Boston Logan International to Sofia? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Boston Logan International to Sofia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boston Logan International to Sofia flights are currently cheapest in February.

Boston Logan International to Sofia: Alternative routes

Compare routes from Boston Logan International to Sofia below. You may find an airport to fly into that's cheaper, faster, or easier than Sofia.

Boston to Sofia: Flight information

The things to know before you go.
Cheapest flight found$673
Cheapest month to flyFebruary

Finding cheap flights from Boston Logan International to Sofia: Frequently asked questions

The best price we found for a return flight from Boston Logan International to Sofia is $673. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Boston Logan International to Sofia. But we found flights with one or more stops from $673.
As of December 2025, there are no flights flying from Boston Logan International to Sofia.
The cheapest month to fly from Boston Logan International to Sofia is usually February.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to Sofia Airport on Wednesday, 4 February 2026.
No airlines currently offer direct flights between Boston Logan International Airport and Sofia Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sofia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Sofia is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, SWISS offers the cheapest flight tickets to Sofia.

Flying from Logan International Airport (BOS) to Sofia Airport (SOF): what you need to know

  • Sofia's timezone is UTC+2, which makes Sofia six hours ahead of Boston.

  • Your BOS to SOF flight won't wait if you're late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • Be prepared for longer queues during popular months such as August. Arriving up to four hours ahead of international flights and two hours for domestic departures is a smart move.

  • Consider adding a stopover when booking your ticket from Logan International Airport to Sofia Airport. Simply uncheck 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here's where you can stop between BOS and SOF:

    • Amsterdam Airport Schiphol

    • Copenhagen Airport

    • Charles de Gaulle Airport

How to find the cheapest flights from Logan International Airport (BOS) to Sofia Airport (SOF)

  • The cheapest price we've found for a one-way Logan International Airport to Sofia Airport flight is $605. A return ticket is currently $673. Depending on the availability and when you book, these fares could change.

  • Don't leave everything to the last minute. You're more likely to get cheap tickets from BOS to SOF if you book early. Airlines often have some terrific early bird discounts.

  • The 'Whole month' search tool shows you the cheapest flights from Logan International Airport to Sofia Airport across every month. It's a good way to snap up a bargain if your travel dates aren't set in stone.

  • Landing cheap flights from BOS to SOF couldn't be easier with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know when a lower fare pops up.

  • Lock in the right flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Logan International Airport to Sofia Airport, use the 'Sort by' function. You can also filter by arrival and departure times, airline, and number of stops.

Handy information about Logan International Airport (BOS)

  • BOS's address is One Harborside Drive.

  • 73.94% of flights leaving from Logan International Airport arrive at their destination on time.

  • To reach Logan International Airport from central Boston, it takes about 10 minutes if you're travelling by car. This depends on traffic, however. It's approximately 5 kilometres from the airport to the city centre.

  • Planning to catch public transport? Expect a trip time of around 25 minutes.

  • Have an early flight from Logan International Airport to Sofia Airport? Avoid the hassle of rushing to the airport (and sneak in some extra precious sleep) by picking one of these hotels near BOS:

Arriving at Sofia Airport (SOF)

  • The last thing you need is a long trip to your hotel if you're landing late on a Logan International Airport to Sofia Airport flight. Stay at one of these accommodation options near SOF instead:

  • Go wherever you want, whenever you want with a Sofia Airport rental car. Book your wheels from MEX, Surprice or NU Car Rentals and discover more of Sofia and beyond.

  • To secure the lowest price, book your vehicle from Sofia Airport about one week in advance.

Getting from Sofia Airport (SOF) to central Sofia

  • Sofia Airport to the centre of Sofia has a drive time of about 15 minutes. It's approximately 11 kilometres away.

  • Getting to the centre by public transport will take you around 35 minutes.

When to fly to Sofia Airport (SOF)

  • The quietest month for a flight from Logan International Airport to Sofia Airport is April, while August is the most popular. Choose the ideal time to visit Sofia based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Sofia is August, with the temperature ranging between 14ºC and 30ºC. Book your flights from Logan International Airport to Sofia Airport in this month if this is the type of weather you enjoy.

  • Look for cheap tickets from BOS to SOF in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -11ºC and 7ºC on average.

Explore more of Bulgaria

  • You've visited Sofia, now it's time to explore more of Bulgaria. Travel about 129 kilometres south-east to Plovdiv to tick off its top sights. From Plovdiv Old Town to Plovdiv Roman Theatre and Archaelogical Complex Nebet Tepe, you've got a jam-packed schedule ahead.

  • Around 386 kilometres east of Sofia, Varna is another favourite stop in Bulgaria. Experience the best of this destination with a visit to Park Asparuhovo - Asparuhovo sea garden, Dormition of theotokos Cathedral and Sunset viewpoint (място за гледане на Залеза).

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.