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$563+ Cheap flights from Sofia (SOF) to Boston (BOS)

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — BOS
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Sofia to Boston Logan Intl are usually found in September or January, booked 79 days in advance, depart on a Thursday or Monday and return on a Tuesday

Cheap flight deals from Sofia to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Boston (BOS). 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 April 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$616
(United Airlines)

One-way from

$563
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$715
Provider with most accurate pricing for Sofia-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Sofia-Boston Logan Intl flights.
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From Sofia to Boston Logan Intl
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One-way flight from Sofia to Boston Logan Intl
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Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Sofia to Boston

Cheapest flights from Sofia to Boston
Explore the most affordable flight options available from Sofia to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 5/236:15 amSOF - BOS
2 stops34h 20mUnited Airlines
Wed 8/138:05 pmBOS - SOF
1 stop19h 55mUnited Airlines
Deal found 4/28$616
This Air Canada deal was found by Cheapflights users on 4/28. 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 5/136:20 amSOF - BOS
2 stops34h 15mAir Canada
Tue 5/276:20 pmBOS - SOF
2 stops33h 55mAir Canada
Deal found 4/28$630
This Netflights deal was found by Cheapflights users on 4/28. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1712:45 pmSOF - BOS
1 stop11h 55mLufthansa
Sat 5/3110:00 pmBOS - SOF
1 stop17h 50mLufthansa
Deal found 4/28$631
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Tue 5/131:15 pmSOF - BOS
1 stop13h 40mSWISS
Tue 5/279:40 pmBOS - SOF
1 stop29h 25mSWISS
Deal found 4/28$634
This Lufthansa deal was found by Cheapflights users on 4/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/201:15 pmSOF - BOS
1 stop13h 40mMultiple Airlines
Sun 9/1410:00 pmBOS - SOF
1 stop17h 50mMultiple Airlines
Deal found 4/28$639
This British Airways deal was found by Cheapflights users on 4/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/162:20 pmSOF - BOS
2 stops15h 29mBritish Airways
Sat 5/317:21 pmBOS - SOF
2 stops17h 59mBritish Airways
Deal found 4/28$828
This AranGrant deal was found by Cheapflights users on 4/28. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2512:55 pmSOF - BOS
1 stop31h 45mITA Airways
Sun 7/65:05 pmBOS - SOF
1 stop11h 55mITA Airways
Deal found 4/28$2,291

Cheapflights Fare Finder

Customize your flight search to find flights from Sofia to Boston 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 April 29, 2025.
Use the filters below to find and compare flights from Sofia to Boston that are best for you.

Fly from

Sofia

Fly to

Boston

Route

Depart

Return

Price

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 5/23

6:15 am-9:35 am

2 stops34h 20m

Boston Logan Intl

Wed 8/13

8:05 pm-11:00 pm

1 stop19h 55m

$616

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/13

6:20 am-9:35 am

2 stops34h 15m

Boston Logan Intl

Tue 5/27

6:20 pm-11:15 am

2 stops33h 55m

$630

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 5/17

12:45 pm-5:40 pm

1 stop11h 55m

Boston Logan Intl

Sat 5/31

10:00 pm-10:50 pm

1 stop17h 50m

$631

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/13

1:15 pm-7:55 pm

1 stop13h 40m

Boston Logan Intl

Tue 5/27

9:40 pm-10:05 am

1 stop29h 25m

$634

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/20

1:15 pm-7:55 pm

1 stop13h 40m

Boston Logan Intl

Sun 9/14

10:00 pm-10:50 pm

1 stop17h 50m

$639

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 5/16

2:20 pm-10:49 pm

2 stops15h 29m

Boston Logan Intl

Sat 5/31

7:21 pm-8:20 pm

2 stops17h 59m

$828

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 6/25

12:55 pm-1:40 pm

1 stop31h 45m

Boston Logan Intl

Sun 7/6

5:05 pm-12:00 pm

1 stop11h 55m

$2,291

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 8/18

5:00 am-9:15 pm

3 stops23h 15m

$563

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 6/16

1:30 pm-3:05 pm

1 stop32h 35m

$574

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 8/20

12:45 pm-5:40 pm

1 stop11h 55m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 17 results
1
2

Compare providers for flights from Sofia to Boston

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 Sofia to Boston in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice 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 Sofia-Boston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sofia-Boston flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sofia-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-Boston flights, Cheapflights users trust eDreams the most. eDreams 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 Sofia-Boston 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 Sofia to Boston

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

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

Use this chart to determine the optimal time to book a round-trip flight from Sofia to Boston. Price data was last updated on April 25, 2025.

The price you pay for your flight from Sofia to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 79 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Sofia to Boston (average of $218). Flying from Sofia to Boston in July is currently the most expensive (average of $311). 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 SOF to BOS?

Find hourly flight availability from Sofia to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Sofia to Boston in the afternoon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

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

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

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

Rainfall in Boston by month

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

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

Temperature in Boston by month

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

If weather is an important factor for your trip to Boston, 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 73.4 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 Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated April 29, 2025.
Austrian Airlines
7.6
Good
780 reviews

Comfort

7.3

Food

6.7

Boarding

7.6

Entertainment

6.7

Overall

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.6
Good
780 reviews
Austrian Airlines
7.6
Good
780 reviews

Comfort

7.3

Food

6.7

Boarding

7.6

Entertainment

6.7

Overall

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
SWISS
7.5
Good
1,587 reviews
Austrian Airlines
7.6
Good
780 reviews

Comfort

7.3

Food

6.7

Boarding

7.6

Entertainment

6.7

Overall

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Qatar Airways
7.4
Good
3,561 reviews
Austrian Airlines
7.6
Good
780 reviews

Comfort

7.3

Food

6.7

Boarding

7.6

Entertainment

6.7

Overall

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Air France
7.4
Good
1,444 reviews
Austrian Airlines
7.6
Good
780 reviews

Comfort

7.3

Food

6.7

Boarding

7.6

Entertainment

6.7

Overall

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
United Airlines
7.4
Good
8,696 reviews
Austrian Airlines
7.6
Good
780 reviews

Comfort

7.3

Food

6.7

Boarding

7.6

Entertainment

6.7

Overall

7.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

Related info for your journey

Find useful and relevant information for your journey from Sofia to Boston. 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 Sofia to Boston round-trip?

    United Airlines, at $616, was found to be the cheapest airline from Sofia to Boston.Alternate airlines to your destination round-trip include Air Canada and Lufthansa. United Airlines is priced at 9% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Qatar Airways, with whom users have recently found tickets for as low as $574. However, be on the lookout for offers from Lufthansa and Air Serbia, as they are both options that can get you from Sofia to Boston for a low price.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Sofia to Boston (average of $218). Flying from Sofia to Boston in July is currently the most expensive (average of $311). 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

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Marlborough
Warwick
Cambridge
Waltham
Framingham
Chestnut Hill
Randolph
Brockton
Lowell
Woburn
Somerville
York Beach
Saco
Burlington
West Yarmouth
Smithfield
Lincoln
Salem
Chelsea
Seabrook

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Top 8 airlines flying from Sofia to Boston

Discover the top 8 airlines that operate flights from Sofia to Boston. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$500Average$647FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$520Average$667FlexibilityNo cancel feeOn-time77%
KLMCheapest$520Average$685FlexibilityNo cancel feeOn-time75%
SWISSCheapest$525Average$727FlexibilityNo cancel feeOn-time79%
Air FranceCheapest$538Average$637FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$567Average$680FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$573Average$712FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$574Average$716FlexibilityNo cancel feeOn-time76%

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