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$282+ Cheap flights from Boston (BOS) 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from Boston Logan Intl to Sofia are usually found in October or February, booked 64 days in advance, depart on a Tuesday or Saturday and return on a Thursday

Cheap flight deals from Boston to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$643
(American Airlines)

One-way from

$282
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,074
Provider with most accurate pricing for Boston Logan Intl-Sofia flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Sofia flights.
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From Boston Logan Intl to Sofia
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One-way flight from Boston Logan Intl to Sofia
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High demand for flights, 22% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Boston to Sofia

Cheapest flights from Boston to Sofia
Explore the most affordable flight options available from Boston to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:50 amBOS - SOF
2 stops19h 40mAir Canada
Fri 1/312:05 pmSOF - BOS
2 stops26h 37mAir Canada
Deal found 12/18$728
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:15 pmBOS - SOF
1 stop14h 15mLufthansa
Fri 1/316:05 amSOF - BOS
1 stop19h 30mLufthansa
Deal found 12/18$731
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:15 pmBOS - SOF
1 stop14h 15mMultiple Airlines
Fri 1/318:00 amSOF - BOS
2 stops18h 00mMultiple Airlines
Deal found 12/18$746
This United 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:10 amBOS - SOF
2 stops23h 25mUnited Airlines
Sat 1/111:45 pmSOF - BOS
2 stops31h 25mUnited Airlines
Deal found 12/17$808
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:05 pmBOS - SOF
1 stop12h 00mKLM
Fri 1/317:00 amSOF - BOS
1 stop19h 15mKLM
Deal found 12/18$1,091
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/186:25 pmBOS - SOF
1 stop22h 30mAustrian Airlines
Wed 12/258:00 amSOF - BOS
1 stop13h 10mAustrian Airlines
Deal found 12/17$2,469

Find flights from Boston to Sofia within your budget

Customize your flight search to find flights from Boston 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, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 3/17

7:39 pm-5:10 pm

2 stops15h 31m

Sofia

Mon 3/31

8:00 pm-3:35 pm

2 stops26h 35m

$643

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 3/18

10:50 am-5:55 pm

2 stops25h 05m

Sofia

Tue 4/1

12:55 pm-5:50 pm

1 stop11h 55m

$645

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 1/15

8:00 pm-6:45 pm

2 stops15h 45m

Sofia

Mon 2/3

2:20 pm-5:00 pm

2 stops33h 40m

$646

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 1/15

8:00 pm-8:50 pm

1 stop17h 50m

Sofia

Mon 2/3

9:45 am-6:05 pm

1 stop15h 20m

$649

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 2/6

6:10 pm-10:25 pm

2 stops21h 15m

Sofia

Thu 2/20

6:10 am-8:05 pm

2 stops20h 55m

$677

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 2/6

8:40 pm-10:45 pm

1 stop19h 05m

Sofia

Thu 2/20

1:45 pm-6:35 pm

1 stop11h 50m

$685

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 12/31

10:50 am-1:30 pm

2 stops19h 40m

Sofia

Fri 1/31

2:05 pm-9:42 am

2 stops26h 37m

$728

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 2/18

9:55 pm-6:10 pm

2 stops13h 15m

Sofia

Thu 5/8

12:45 pm-3:25 pm

2 stops33h 40m

$744

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 2/18

8:00 pm-2:10 pm

1 stop11h 10m

Sofia

Wed 5/7

9:30 pm-11:50 am

1 stop21h 20m

$780

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 1/7

7:09 pm-2:05 pm

1 stop11h 56m

Sofia

Tue 1/21

7:00 am-1:35 pm

1 stop13h 35m

$919

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 18 results
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Compare providers for flights from Boston to Sofia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Sofia in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Sofia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Boston 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.

Travel insights for flights from Boston to Sofia

Get recent, data-driven insights about flights from Boston to Sofia including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Boston to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Sofia. Price data was last updated on December 13, 2024.

The best time to book flights from Boston to Sofia is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Boston to Sofia (average of $632). Flying from Boston to Sofia in June is currently the most expensive (average of $1,243). 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 BOS to SOF?

Find hourly flight availability from Boston 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, 2024.

When flying from Boston to Sofia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 21% versus a flight in the morning.

What is the cheapest day to fly from Boston to Sofia?

Use this chart to determine the cheapest time to fly round-trip from Boston to Sofia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to Sofia flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sofia by month

Plan your trip to Sofia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sofia ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

Plan your trip to Sofia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sofia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sofia. Reviews last updated December 18, 2024.
Get a feel of what it's like to fly with United Airlines, Air Canada and KLM from Boston to Sofia by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,349 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.9

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

KLM
7.8
Good
1,349 reviews
KLM
7.8
Good
1,349 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.9

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Austrian Airlines
7.6
Good
787 reviews
KLM
7.8
Good
1,349 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.9

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

SWISS
7.6
Good
1,606 reviews
KLM
7.8
Good
1,349 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.9

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

United Airlines
7.4
Good
9,059 reviews
KLM
7.8
Good
1,349 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.9

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Turkish Airlines
7.3
Good
3,907 reviews
KLM
7.8
Good
1,349 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.9

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Related info for your journey

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

  • What are the cheapest airlines flying from Boston to Sofia round-trip?

    American Airlines, at $643, was found to be the cheapest airline from Boston to Sofia.Alternate airlines to your destination round-trip include United Airlines and Turkish Airlines. American Airlines is 22% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as $507 on British Airways. Other airlines that offer cheap prices include Air Canada from $550 and United Airlines from $652 one-way.

  • Where are the most common layover locations when flying from Boston to Sofia?

    Flights departing from Boston and landing in Sofia layover in Frankfurt am Main most frequently.

  • What are some popular things to do or see while on a layover in Frankfurt am Main?

    Most Frankfurt am Main visitors opt to spend their time experiencing Römerberg, Hauptwache, and Römer. Travelers on a layover in Frankfurt am Main can visit Römerberg, Hauptwache, and Römer, by traveling 7.4 mi, 7.4 mi, and 7.4 mi, respectively after landing at Frankfurt am Main. Those looking to explore during their layover in Frankfurt am Main can rent a car from Frankfurt am Main for about $42 per day.

  • Where are the least popular layover locations for Boston to Sofia flights?

    The least popular layover on flights from Boston to Sofia is Munich.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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 Boston to Sofia?

    Currently, November is the cheapest month in which you can book a flight from Boston to Sofia (average of $632). Flying from Boston to Sofia in June is currently the most expensive (average of $1,243). 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

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Alternative routes for Boston to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
Hartford to Sofia flights

Top 8 airlines flying from Boston to Sofia

Discover the top 8 airlines that operate flights from Boston 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, 2024.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$518Average$610FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$550Average$808FlexibilityNo cancel feeOn-time70%
SWISSCheapest$558Average$908FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$608Average$1,023FlexibilityNo cancel feeOn-time69%
KLMCheapest$624Average$864FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$627Average$996FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$742Average$873FlexibilityNo cancel feeOn-time81%
Austrian AirlinesCheapest$789Average$987FlexibilityNo cancel feeOn-time78%
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