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Bulgaria

$369+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
May 3 — May 101
Sat 5/3
Sat 5/10
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 28, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$596
(Justfly.com)

One-way from

$394
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$874
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 ($35 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 28, 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.
Sat 10/256:30 pmBOS - SOF
2 stops45h 55mUnited Airlines
Sat 11/86:00 amSOF - BOS
2 stops21h 18mUnited Airlines
Deal found 4/28$593
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/59:35 pmBOS - SOF
1 stop34h 10mTurkish Airlines
Thu 5/229:15 pmSOF - BOS
1 stop29h 25mTurkish Airlines
Deal found 4/28$596
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:50 amBOS - SOF
2 stops29h 50mAir Canada
Tue 9/96:20 amSOF - BOS
2 stops42h 18mAir Canada
Deal found 4/28$600
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2610:20 amBOS - SOF
2 stops16h 45mMultiple Airlines
Tue 9/91:15 pmSOF - BOS
1 stop13h 40mMultiple Airlines
Deal found 4/28$605
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 8/128:05 pmBOS - SOF
1 stop15h 35mLufthansa
Tue 8/196:00 amSOF - BOS
1 stop18h 40mLufthansa
Deal found 4/28$615
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 8/198:05 pmBOS - VAR
1 stop17h 40mLufthansa
Mon 9/84:00 pmVAR - BOS
2 stops35h 10mLufthansa
Deal found 4/28$642
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/149:55 amBOS - SOF
2 stops24h 15mITA Airways
Sun 8/246:00 pmSOF - BOS
1 stop26h 40mITA Airways
Deal found 4/28$732
This Air France 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/106:50 pmBOS - SOF
1 stop12h 10mAir France
Tue 9/27:00 amSOF - BOS
1 stop15h 05mAir France
Deal found 4/28$733
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/305:05 pmBOS - SOF
2 stops11h 55mSWISS
Wed 8/1312:45 pmSOF - BOS
2 stops14h 10mSWISS
Deal found 4/28$772
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/277:25 pmBOS - SOF
1 stop16h 45mBritish Airways
Sun 8/109:10 pmSOF - BOS
1 stop27h 05mBritish Airways
Deal found 4/28$901
This Austrian 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/225:10 pmBOS - VAR
1 stop15h 05mAustrian Airlines
Sun 6/14:00 pmVAR - BOS
1 stop28h 50mAustrian Airlines
Deal found 4/28$966
This Austrian Airlines deal was found by Cheapflights users on 4/27. 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.
Wed 12/246:00 pmBOS - SOF
1 stop17h 00mAustrian Airlines
Wed 1/76:45 pmSOF - BOS
2 stops30h 59mAustrian Airlines
Deal found 4/27$970

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 28, 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

Sat 10/25

6:30 pm-11:25 pm

2 stops45h 55m

Sofia

Sat 11/8

6:00 am-8:18 pm

2 stops21h 18m

$593

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 8/26

5:50 am-6:40 pm

2 stops29h 50m

Sofia

Tue 9/9

6:20 am-5:38 pm

2 stops42h 18m

$600

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 9/25

9:35 pm-2:45 pm

1 stop34h 10m

Sofia

Thu 10/9

9:25 am-7:40 pm

1 stop17h 15m

$602

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 8/26

10:20 am-10:05 am

2 stops16h 45m

Sofia

Tue 9/9

1:15 pm-7:55 pm

1 stop13h 40m

$605

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 8/12

8:05 pm-6:40 pm

1 stop15h 35m

Sofia

Tue 8/19

6:00 am-5:40 pm

1 stop18h 40m

$615

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 8/19

8:05 pm-8:45 pm

1 stop17h 40m

Varna

Mon 9/8

4:00 pm-8:10 pm

2 stops35h 10m

$642

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 8/14

9:55 am-5:10 pm

2 stops24h 15m

Sofia

Sun 8/24

6:00 pm-1:40 pm

1 stop26h 40m

$732

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 7/10

6:50 pm-2:00 pm

1 stop12h 10m

Sofia

Tue 9/2

7:00 am-3:05 pm

1 stop15h 05m

$733

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 7/30

5:05 pm-12:00 pm

2 stops11h 55m

Sofia

Wed 8/13

12:45 pm-7:55 pm

2 stops14h 10m

$772

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 7/27

7:25 pm-7:10 pm

1 stop16h 45m

Sofia

Sun 8/10

9:10 pm-5:15 pm

1 stop27h 05m

$901

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 18 results
1
2

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 $1,218). 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 28, 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 28, 2025.
See what other customers who have flown with KLM, Austrian Airlines 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.
KLM
7.8
Good
1,333 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.2

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.2

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.6
Good
780 reviews
KLM
7.8
Good
1,333 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.2

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,587 reviews
KLM
7.8
Good
1,333 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.2

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,444 reviews
KLM
7.8
Good
1,333 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.2

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,696 reviews
KLM
7.8
Good
1,333 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.2

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 Air France, which is currently one of the cheapest options available, starting at $412. ITA Airways flights start at $452 while deals on Austrian Airlines start at $642 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 $1,218). 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$515Average$914FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$531Average$683FlexibilityNo cancel feeOn-time70%
SWISSCheapest$558Average$834FlexibilityNo cancel feeOn-time79%
KLMCheapest$624Average$870FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$637Average$940FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$648Average$933FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$663Average$951FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$687Average$952FlexibilityNo cancel feeOn-time77%
ITA AirwaysCheapest$742Average$931FlexibilityNo cancel feeOn-time81%

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