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$350+ Cheap flights from Massachusetts to Sofia (SOF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Massachusetts to Sofia

Cheapest flights from Massachusetts to Sofia
Explore the most affordable flight options available from Massachusetts to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:55 pmBOS - SOF
2 stops44h 50mUnited Airlines
Tue 1/277:55 amSOF - BOS
2 stops16h 19mUnited Airlines
Deal found 12/17$494
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:55 pmBOS - SOF
2 stops44h 50mUnited Airlines
Tue 1/132:00 pmSOF - BOS
2 stops39h 37mUnited Airlines
Deal found 12/16$503
This KLM deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:10 pmBOS - SOF
1 stop11h 55mMultiple Airlines
Tue 1/277:10 amSOF - BOS
1 stop13h 30mMultiple Airlines
Deal found 12/17$537
This KLM deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:10 pmBOS - SOF
1 stop11h 55mMultiple Airlines
Tue 1/137:10 amSOF - BOS
2 stops18h 20mMultiple Airlines
Deal found 12/16$547
This FlightHub deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:40 pmBOS - SOF
2 stops19h 05mLufthansa
Tue 1/132:00 pmSOF - BOS
2 stops35h 57mLufthansa
Deal found 12/16$777
This Ovago deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:40 pmBOS - SOF
2 stops16h 35mLufthansa
Wed 12/312:00 pmSOF - BOS
1 stop11h 35mLufthansa
Deal found 12/18$1,192
This Ovago deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:40 pmBOS - SOF
2 stops16h 35mMultiple Airlines
Wed 12/317:55 amSOF - BOS
2 stops17h 53mMultiple Airlines
Deal found 12/18$1,200
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/174:20 pmBOS - SOF
2 stops23h 25mUnited Airlines
Tue 2/177:55 amSOF - BOS
1 stop13h 10mUnited Airlines
Deal found 12/17$1,319

Find flight deals from Massachusetts to Sofia

Keep the following information in mind while searching for Massachusetts to Sofia flight deals. Data was last updated December 18, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$335
(Kiwi.com)

One-way from

$248
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$773
Provider with most accurate pricing for Boston Logan Intl-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Sofia flights.
Search Deals
From Massachusetts to Sofia
Search Deals
One-way flight from Massachusetts to Sofia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Massachusetts to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Massachusetts to Sofia that are best for you.

Fly from

Massachusetts

Fly to

Sofia

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 2/10

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Tue 2/24

7:55 am-2:05 pm

1 stop13h 10m

$350

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 2/10

2:20 pm-6:20 pm

2 stops21h 00m

Sofia

Mon 2/23

6:45 pm-2:05 pm

1 stop26h 20m

$385

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 2/23

3:35 pm-1:15 pm

2 stops14h 40m

Sofia

Wed 3/4

2:00 pm-9:27 pm

2 stops14h 27m

$386

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 1/21

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

Wed 1/28

7:55 am-6:57 pm

2 stops18h 02m

$392

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 1/9

6:25 pm-3:30 pm

1 stop14h 05m

Sofia

Fri 1/23

7:55 am-5:14 pm

2 stops16h 19m

$396

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 1/9

6:25 pm-3:30 pm

1 stop14h 05m

Sofia

Fri 1/23

2:00 pm-6:35 pm

1 stop11h 35m

$408

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 4/13

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Fri 6/5

6:10 am-5:40 pm

1 stop18h 30m

$416

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 4/14

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Fri 6/5

6:10 am-5:40 pm

1 stop18h 30m

$416

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 4/20

9:30 am-12:10 pm

2 stops19h 40m

Sofia

Mon 5/4

12:55 pm-2:23 pm

2 stops56h 28m

$421

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 2/6

4:15 pm-1:35 pm

1 stop14h 20m

Sofia

Fri 2/20

7:55 am-2:05 pm

1 stop13h 10m

$423

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 26 results
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Best time to book a flight from Massachusetts to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Massachusetts with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Massachusetts to Sofia

What is the cheapest month to book a flight from Massachusetts to Sofia?

Currently, April is the cheapest month in which you can book a flight from Massachusetts to Sofia (average of $387). Flying from Massachusetts to Sofia in May is currently the most expensive (average of $609). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MA to SOF?

Find hourly flight availability from Massachusetts to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from Massachusetts to Sofia in the evening. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Massachusetts to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sofia from Massachusetts?

    For a flight from Massachusetts to Sofia, you will be flying into Sofia. Sofia (SOF) is just 4.2 mi from the center of the city.

  • How long is the flight from Massachusetts to Sofia?

    A quick flight from Massachusetts to Sofia can take about 14h 05m. Austrian Airlines provides one of the quickest options available for as low as $396. The distance between Massachusetts and Sofia is about 4521 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Massachusetts to Sofia one-way?

    $288 is the cheapest one-way deal found within the past few days, from Air France. You may also be able to find cheap deals on Lufthansa and Austrian Airlines, with prices starting from $374 and $409, respectively.

  • What are the most popular routes from Massachusetts to Sofia?

    When deciding which route to take from Massachusetts to Sofia consider Boston Logan Intl - Sofia, Hartford Bradley Intl - Sofia or Provincetown - Sofia as they are the most popular.

  • Can I find deals for flights from Massachusetts to Sofia that include hotel bookings?

    Yes. In addition to deals on Massachusetts to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Massachusetts to Sofia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Massachusetts to Sofia.

  • Can I find deals for business class flights from Massachusetts to Sofia?

    Yes. Cheapflights offers flight deals from Massachusetts to Sofia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Massachusetts to Sofia?

    Currently, April is the cheapest month in which you can book a flight from Massachusetts to Sofia (average of $387). Flying from Massachusetts to Sofia in May is currently the most expensive (average of $609). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Massachusetts to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Massachusetts to Sofia

Discover the top 9 airlines that operate flights from Massachusetts to Sofia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$379Average$570FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$416Average$562FlexibilityNo cancel feeOn-time77%
SWISSCheapest$417Average$717FlexibilityNo cancel feeOn-time79%
Austrian AirlinesCheapest$422Average$712FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$439Average$761FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$449Average$853FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$482Average$540FlexibilityNo cancel feeOn-time70%
ITA AirwaysCheapest$505Average$924FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$535Average$681FlexibilityNo cancel feeOn-time77%

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