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$242+ Cheap flights from Boston (BOS) to Bulgaria

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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Boston to Bulgaria

Keep the following information in mind while searching for Boston to Bulgaria flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$501
(oojo)

One-way from

$242
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$786
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 Bulgaria
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One-way flight from Boston Logan Intl to Bulgaria
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Highest demand for flights based on searches. 4% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Boston to Bulgaria

Cheapest flights from Boston to Bulgaria
Explore the most affordable flight options available from Boston to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This oojo deal was found by Cheapflights users on 2/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/189:00 pmBOS - SOF
1 stop17h 50mTurkish Airlines
Tue 4/13:35 pmSOF - BOS
1 stop35h 05mTurkish Airlines
Deal found 2/20$501
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/107:25 pmBOS - SOF
1 stop15h 45mAmerican Airlines
Mon 3/245:25 pmSOF - BOS
1 stop26h 40mAmerican Airlines
Deal found 2/19$531
This British Airways deal was found by Cheapflights users on 2/20. 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.
Tue 3/117:25 pmBOS - SOF
1 stop12h 45mBritish Airways
Tue 3/256:05 pmSOF - BOS
1 stop26h 55mBritish Airways
Deal found 2/20$533
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 3/189:40 pmBOS - SOF
1 stop19h 05mUnited Airlines
Wed 4/26:15 amSOF - BOS
2 stops15h 42mUnited Airlines
Deal found 2/20$534
This Air Canada deal was found by Cheapflights users on 2/20. 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 3/1110:50 amBOS - SOF
2 stops20h 35mAir Canada
Tue 3/252:15 pmSOF - BOS
2 stops25h 24mAir Canada
Deal found 2/20$542
This Lufthansa deal was found by Cheapflights users on 2/19. 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.
Mon 3/105:15 pmBOS - SOF
1 stop14h 20mLufthansa
Mon 3/246:55 pmSOF - BOS
1 stop30h 40mLufthansa
Deal found 2/19$556
This KLM deal was found by Cheapflights users on 2/20. 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.
Thu 3/208:05 pmBOS - SOF
1 stop12h 00mKLM
Thu 3/277:00 amSOF - BOS
1 stop13h 25mKLM
Deal found 2/20$584
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2010:50 amBOS - SOF
2 stops20h 35mMultiple Airlines
Thu 3/276:45 pmSOF - BOS
1 stop26h 25mMultiple Airlines
Deal found 2/20$586
This oojo deal was found by Cheapflights users on 2/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/199:35 pmBOS - VAR
1 stop16h 45mTurkish Airlines
Mon 9/810:10 pmVAR - BOS
1 stop28h 30mTurkish Airlines
Deal found 2/20$745
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/217:40 pmBOS - VAR
1 stop17h 45mMultiple Airlines
Tue 4/2910:50 pmVAR - BOS
2 stops26h 00mMultiple Airlines
Deal found 2/20$773
This Austrian Airlines deal was found by Cheapflights users on 2/20. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/155:10 pmBOS - VAR
1 stop15h 05mAustrian Airlines
Tue 4/294:00 pmVAR - BOS
1 stop28h 50mAustrian Airlines
Deal found 2/20$796
This Lufthansa deal was found by Cheapflights users on 2/20. 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 4/158:05 pmBOS - VAR
2 stops36h 10mLufthansa
Fri 5/29:45 amVAR - BOS
1 stop14h 55mLufthansa
Deal found 2/20$817

Find flights from Boston to Bulgaria within your budget

Customize your flight search to find flights from Boston to Bulgaria 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 20, 2025.

Fly from

Boston

Fly to

Bulgaria

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 3/18

9:00 pm-8:50 pm

1 stop17h 50m

Sofia

Tue 4/1

3:35 pm-7:40 pm

1 stop35h 05m

$501

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 3/10

7:25 pm-5:10 pm

1 stop15h 45m

Sofia

Mon 3/24

5:25 pm-2:05 pm

1 stop26h 40m

$531

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 3/11

7:25 pm-2:10 pm

1 stop12h 45m

Sofia

Tue 3/25

6:05 pm-3:00 pm

1 stop26h 55m

$533

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 3/18

9:40 pm-10:45 pm

1 stop19h 05m

Sofia

Wed 4/2

6:15 am-2:57 pm

2 stops15h 42m

$534

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 3/11

10:50 am-1:25 pm

2 stops20h 35m

Sofia

Tue 3/25

2:15 pm-9:39 am

2 stops25h 24m

$542

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 3/10

5:15 pm-1:35 pm

1 stop14h 20m

Sofia

Mon 3/24

6:55 pm-7:35 pm

1 stop30h 40m

$556

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 3/20

8:05 pm-2:05 pm

1 stop12h 00m

Sofia

Thu 3/27

7:00 am-2:25 pm

1 stop13h 25m

$584

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 3/20

10:50 am-1:25 pm

2 stops20h 35m

Sofia

Thu 3/27

6:45 pm-3:10 pm

1 stop26h 25m

$586

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 8/19

9:35 pm-9:20 pm

1 stop16h 45m

Varna

Mon 9/8

10:10 pm-7:40 pm

1 stop28h 30m

$745

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Mon 4/21

7:40 pm-8:25 pm

1 stop17h 45m

Varna

Tue 4/29

10:50 pm-5:50 pm

2 stops26h 00m

$773

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 26 results
1
2
3

Best time to book a flight from Boston to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria 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 Bulgaria

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

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

Currently, November is the cheapest month in which you can book a flight from Boston to Bulgaria (average of $632). Flying from Boston to Bulgaria 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 BG?

Find hourly flight availability from Boston to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from Boston to Bulgaria, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Bulgaria by month

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

In terms of precipitation, rainfall in Bulgaria 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 Bulgaria when rainfall is around 1.2 in.

Temperature in Bulgaria by month

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

If weather is an important factor for your trip to Bulgaria, 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 Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated February 20, 2025.
See what other customers who have flown with KLM, Austrian Airlines and United Airlines from Boston to Bulgaria have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,333 reviews

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Austrian Airlines
7.6
Good
773 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

United Airlines
7.4
Good
8,766 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Turkish Airlines
7.3
Good
3,832 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Related info for your journey

Find useful and relevant information for your journey from Boston to Bulgaria. 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 from for flights from Boston to Bulgaria?

    If you book a flight to Bulgaria from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston.

  • What are the most popular routes from Boston to Bulgaria?

    The most popular flight routes from Boston to Bulgaria are Boston Logan Intl - Sofia, Boston Logan Intl - Varna and Boston Logan Intl - Bourgas.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Boston to Bulgaria (average of $632). Flying from Boston to Bulgaria 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

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Top 8 airlines flying from Boston to Bulgaria

Discover the top 8 airlines that operate flights from Boston to Bulgaria. 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$515Average$735FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$548Average$887FlexibilityNo cancel feeOn-time70%
SWISSCheapest$558Average$906FlexibilityNo cancel feeOn-time79%
KLMCheapest$624Average$871FlexibilityNo cancel feeOn-time75%
Austrian AirlinesCheapest$648Average$936FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$667Average$1,070FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$668Average$1,023FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$725Average$865FlexibilityNo cancel feeOn-time81%
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