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Bulgaria

$296+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$565
(CheapOair)

One-way from

$455
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$859
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. 5% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 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 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 April 17, 2025.

This CheapOair deal was found by Cheapflights users on 4/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/19:55 pmBOS - SOF
1 stop14h 15mBritish Airways
Mon 6/168:00 pmSOF - BOS
1 stop33h 35mBritish Airways
Deal found 4/16$565
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/167:15 pmBOS - SOF
2 stops22h 50mMultiple Airlines
Fri 5/236:15 amSOF - BOS
2 stops18h 35mMultiple Airlines
Deal found 4/16$625
This Trip.com deal was found by Cheapflights users on 4/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:35 pmBOS - SOF
1 stop34h 10mTurkish Airlines
Fri 10/109:25 amSOF - BOS
1 stop17h 15mTurkish Airlines
Deal found 4/16$636
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/215:05 pmBOS - SOF
1 stop12h 25mSWISS
Mon 8/253:30 pmSOF - BOS
1 stop30h 55mSWISS
Deal found 4/17$639
This CheapOair deal was found by Cheapflights users on 4/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/15:50 pmBOS - SOF
2 stops22h 10mLufthansa
Tue 8/266:00 amSOF - BOS
1 stop18h 40mLufthansa
Deal found 4/16$645
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:29 pmBOS - SOF
2 stops16h 56mAmerican Airlines
Wed 11/193:00 pmSOF - BOS
1 stop30h 00mAmerican Airlines
Deal found 4/17$689
This Travelocity deal was found by Cheapflights users on 4/15. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/208:05 pmBOS - VAR
1 stop17h 40mMultiple Airlines
Thu 5/294:00 pmVAR - BOS
1 stop28h 50mMultiple Airlines
Deal found 4/15$696
This United Airlines deal was found by Cheapflights users on 4/16. 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 10/256:40 pmBOS - SOF
2 stops41h 10mUnited Airlines
Mon 11/32:15 pmSOF - BOS
2 stops31h 23mUnited Airlines
Deal found 4/16$701
This CheapOair deal was found by Cheapflights users on 4/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/199:50 amBOS - VAR
2 stops27h 55mLufthansa
Mon 9/812:20 pmVAR - BOS
1 stop12h 20mLufthansa
Deal found 4/16$706
This Gurufare deal was found by Cheapflights users on 4/15. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/68:40 pmBOS - SOF
2 stops32h 25mITA Airways
Wed 9/1012:55 pmSOF - BOS
1 stop31h 45mITA Airways
Deal found 4/15$711
This Trip.com deal was found by Cheapflights users on 4/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/128:05 pmBOS - BOJ
1 stop14h 30mLufthansa
Wed 8/206:25 pmBOJ - BOS
1 stop30h 15mLufthansa
Deal found 4/16$721
This Booking.com deal was found by Cheapflights users on 4/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1810:20 amBOS - SOF
2 stops25h 20mAir Canada
Mon 9/2912:00 pmSOF - BOS
2 stops33h 31mAir Canada
Deal found 4/16$742

Cheapflights Fare Finder

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 April 17, 2025.
Use the filters below to find and compare flights from Boston to Bulgaria that are best for you.

Fly from

Boston

Fly to

Bulgaria

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 6/1

9:55 pm-7:10 pm

1 stop14h 15m

Sofia

Mon 6/16

8:00 pm-10:35 pm

1 stop33h 35m

$565

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 5/16

7:15 pm-1:05 am

2 stops22h 50m

Sofia

Fri 5/23

6:15 am-5:50 pm

2 stops18h 35m

$625

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 10/3

9:35 pm-2:45 pm

1 stop34h 10m

Sofia

Fri 10/10

9:25 am-7:40 pm

1 stop17h 15m

$636

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 7/21

5:05 pm-12:30 pm

1 stop12h 25m

Sofia

Mon 8/25

3:30 pm-3:25 pm

1 stop30h 55m

$639

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 8/1

5:50 pm-11:00 pm

2 stops22h 10m

Sofia

Tue 8/26

6:00 am-5:40 pm

1 stop18h 40m

$645

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 5/20

8:05 pm-8:45 pm

1 stop17h 40m

Varna

Thu 5/29

4:00 pm-1:50 pm

1 stop28h 50m

$696

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 8/19

9:50 am-8:45 pm

2 stops27h 55m

Varna

Mon 9/8

12:20 pm-5:40 pm

1 stop12h 20m

$706

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 9/6

8:40 pm-12:05 pm

2 stops32h 25m

Sofia

Wed 9/10

12:55 pm-1:40 pm

1 stop31h 45m

$711

BostonBurgas

BOS - BOJ

BOSBOJ

Boston Logan Intl

Tue 8/12

8:05 pm-5:35 pm

1 stop14h 30m

Bourgas

Wed 8/20

6:25 pm-5:40 pm

1 stop30h 15m

$721

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 7/30

10:00 pm-10:50 pm

1 stop17h 50m

Sofia

Fri 8/15

6:00 am-5:40 pm

1 stop18h 40m

$738

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 28 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Boston to Bulgaria

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 April 17, 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 April 17, 2025.
See what other customers who have flown with Austrian Airlines, Air France and SWISS from Boston to Bulgaria have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
775 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.8

Comfort

7.3

Overall

7.6

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
775 reviews
Austrian Airlines
7.6
Good
775 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.8

Comfort

7.3

Overall

7.6

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
7.5
Good
1,435 reviews
Austrian Airlines
7.6
Good
775 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.8

Comfort

7.3

Overall

7.6

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
1,580 reviews
Austrian Airlines
7.6
Good
775 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.8

Comfort

7.3

Overall

7.6

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
8,667 reviews
Austrian Airlines
7.6
Good
775 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.8

Comfort

7.3

Overall

7.6

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.
Turkish Airlines
7.3
Good
3,769 reviews
Austrian Airlines
7.6
Good
775 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Entertainment

6.8

Comfort

7.3

Overall

7.6

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 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 cheapest airlines to fly from Boston to Bulgaria one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at $462. Austrian Airlines flights start at $476 while deals on Air Serbia start at $638 one-way.

  • 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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Alternative routes for Boston to Bulgaria

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Top 9 airlines flying from Boston to Bulgaria

Discover the top 9 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$514Average$914FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$550Average$825FlexibilityNo cancel feeOn-time70%
SWISSCheapest$558Average$847FlexibilityNo cancel feeOn-time79%
KLMCheapest$624Average$870FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$637Average$948FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$648Average$931FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$682Average$1,013FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$687Average$952FlexibilityNo cancel feeOn-time77%
ITA AirwaysCheapest$742Average$931FlexibilityNo cancel feeOn-time81%

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