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$258+ Cheap flights from Massachusetts to Sofia (SOF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
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 February 5, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:20 pm
BOS
-
SOF
2 stops20h 40m
Austrian Airlines
Tue 6/26:55 pm
SOF
-
BOS
1 stop25h 55m
Austrian Airlines
Deal found 2/2$351
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2510:50 pm
BOS
-
SOF
1 stop10h 25m
Multiple Airlines
Wed 4/88:00 am
SOF
-
BOS
2 stops17h 19m
Multiple Airlines
Deal found 2/3$352
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:25 pm
BOS
-
SOF
1 stop22h 30m
Austrian Airlines
Tue 3/107:55 am
SOF
-
BOS
1 stop13h 10m
Austrian Airlines
Deal found 2/2$353
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:40 pm
BOS
-
SOF
1 stop19h 05m
Lufthansa
Wed 3/112:00 pm
SOF
-
BOS
1 stop11h 35m
Lufthansa
Deal found 2/3$355
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/249:50 pm
BOS
-
SOF
2 stops13h 30m
Multiple Airlines
Tue 3/107:55 am
SOF
-
BOS
1 stop13h 10m
Multiple Airlines
Deal found 2/2$372
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/305:20 pm
BOS
-
SOF
1 stop11h 55m
Multiple Airlines
Mon 4/137:25 pm
SOF
-
BOS
1 stop29h 15m
Multiple Airlines
Deal found 2/4$374
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:40 pm
BOS
-
SOF
1 stop14h 40m
Lufthansa
Wed 6/312:55 pm
SOF
-
BOS
1 stop11h 45m
Lufthansa
Deal found 2/2$376
This United Airlines deal was found by Cheapflights users on 2/4. 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.
Thu 2/266:05 am
BDL
-
SOF
2 stops33h 40m
United Airlines
Mon 3/22:20 pm
SOF
-
BDL
2 stops26h 14m
United Airlines
Deal found 2/4$747
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 2/54:46 pm
BDL
-
SOF
2 stops22h 59m
United Airlines
Mon 2/92:20 pm
SOF
-
BDL
2 stops40h 24m
United Airlines
Deal found 2/2$803

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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$351
(Kiwi.com)

One-way from

$258
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$461
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. 19% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 5, 2026.
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

Sun 3/29

5:20 pm-3:00 pm

1 stop14h 40m

Sofia

Tue 4/14

8:00 am-7:06 pm

2 stops18h 06m

$388

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 4/22

5:20 pm-10:20 am

1 stop10h 00m

Sofia

Tue 5/12

1:05 pm-3:10 pm

1 stop33h 05m

$391

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 4/19

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Tue 5/12

6:10 am-5:40 pm

1 stop18h 30m

$397

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 4/22

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Mon 5/11

7:25 pm-5:40 pm

1 stop29h 15m

$408

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 4/20

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Mon 5/11

7:25 pm-5:40 pm

1 stop29h 15m

$408

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 5/4

9:40 pm-10:20 am

1 stop29h 40m

Sofia

Tue 5/19

1:05 pm-3:10 pm

1 stop33h 05m

$415

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 5/5

5:10 am-12:10 pm

2 stops24h 00m

Sofia

Tue 5/12

12:55 pm-9:59 pm

2 stops16h 04m

$416

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 5/11

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Wed 5/27

6:10 am-5:40 pm

1 stop18h 30m

$422

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 5/11

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Thu 5/28

6:10 am-5:40 pm

1 stop18h 30m

$422

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 5/11

8:05 pm-11:10 pm

1 stop20h 05m

Sofia

Fri 5/29

6:10 am-5:40 pm

1 stop18h 30m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 21 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 $384). Flying from Massachusetts to Sofia in May is currently the most expensive (average of $630). 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.

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 10h. SWISS provides one of the quickest options available for as low as $391. 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?

    $229 is the cheapest one-way deal found within the past few days, from Austrian Airlines. You may also be able to find cheap deals on Lufthansa and KLM, with prices starting from $374 and $385, 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 $384). Flying from Massachusetts to Sofia in May is currently the most expensive (average of $630). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$380Average$548FlexibilityNo cancel feeOn-time75%
Austrian AirlinesCheapest$394Average$687FlexibilityNo cancel feeOn-time78%
Air FranceCheapest$396Average$494FlexibilityNo cancel feeOn-time77%
SWISSCheapest$410Average$685FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$422Average$708FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$436Average$804FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$482Average$540FlexibilityNo cancel feeOn-time70%
ITA AirwaysCheapest$505Average$924FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$535Average$715FlexibilityNo cancel feeOn-time77%

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