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Bulgaria

$286+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$564
(Air France)

One-way from

$286
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,151
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 ($51 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 June 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 June 12, 2025.

This Orbitz deal was found by Cheapflights users on 6/9. 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.
Thu 9/111:00 pmBOS - SOF
2 stops17h 30mBritish Airways
Sun 9/219:10 pmSOF - BOS
2 stops24h 13mBritish Airways
Deal found 6/9$560
This Air France deal was found by Cheapflights users on 6/9. 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.
Mon 6/306:50 pmBOS - SOF
1 stop12h 10mAir France
Mon 8/47:00 amSOF - BOS
1 stop13h 40mAir France
Deal found 6/9$564
This KLM deal was found by Cheapflights users on 6/9. 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.
Fri 10/36:45 pmBOS - SOF
1 stop12h 15mMultiple Airlines
Sat 10/117:00 amSOF - BOS
1 stop20h 20mMultiple Airlines
Deal found 6/9$577
This KLM deal was found by Cheapflights users on 6/11. 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.
Fri 10/36:45 pmBOS - SOF
1 stop12h 15mKLM
Sat 10/117:00 amSOF - BOS
1 stop16h 30mKLM
Deal found 6/11$578
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 12/104:15 pmBOS - SOF
1 stop18h 50mLufthansa
Wed 12/246:15 amSOF - BOS
1 stop14h 10mLufthansa
Deal found 6/10$593
This Booking.com deal was found by Cheapflights users on 6/10. 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.
Sat 7/55:10 pmBOS - SOF
1 stop15h 10mAustrian Airlines
Sun 8/246:55 pmSOF - BOS
1 stop25h 55mAustrian Airlines
Deal found 6/10$608
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/228:05 pmBOS - SOF
1 stop19h 55mUnited Airlines
Wed 8/206:15 amSOF - BOS
2 stops24h 42mUnited Airlines
Deal found 6/10$609
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 8/129:55 pmBOS - BOJ
2 stops41h 35mMultiple Airlines
Tue 9/1611:20 pmBOJ - BOS
2 stops28h 37mMultiple Airlines
Deal found 6/10$617
This FlightHub deal was found by Cheapflights users on 6/10. 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 7/85:05 pmBOS - SOF
1 stop12h 00mITA Airways
Mon 8/1812:55 pmSOF - BOS
1 stop31h 45mITA Airways
Deal found 6/10$620
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Sat 10/256:30 pmBOS - SOF
2 stops36h 55mAir Canada
Mon 11/32:20 pmSOF - BOS
2 stops31h 18mAir Canada
Deal found 6/12$622
This Turkish Airlines deal was found by Cheapflights users on 6/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/299:35 pmBOS - SOF
1 stop15h 50mTurkish Airlines
Tue 10/219:15 pmSOF - BOS
1 stop29h 25mTurkish Airlines
Deal found 6/10$625
This Booking.com deal was found by Cheapflights users on 6/12. 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 7/295:10 pmBOS - VAR
1 stop12h 35mMultiple Airlines
Wed 8/204:00 pmVAR - BOS
2 stops32h 40mMultiple Airlines
Deal found 6/12$649

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 June 12, 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

Thu 9/11

1:00 pm-1:30 pm

2 stops17h 30m

Sofia

Sun 9/21

9:10 pm-2:23 pm

2 stops24h 13m

$560

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 6/30

6:50 pm-2:00 pm

1 stop12h 10m

Sofia

Mon 8/4

7:00 am-1:40 pm

1 stop13h 40m

$564

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 10/3

6:45 pm-2:00 pm

1 stop12h 15m

Sofia

Sat 10/11

7:00 am-8:20 pm

1 stop20h 20m

$577

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Fri 10/3

6:45 pm-2:00 pm

1 stop12h 15m

Sofia

Sat 10/11

7:00 am-4:30 pm

1 stop16h 30m

$578

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 7/5

5:10 pm-3:20 pm

1 stop15h 10m

Sofia

Sun 8/24

6:55 pm-1:50 pm

1 stop25h 55m

$608

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 7/22

8:05 pm-11:00 pm

1 stop19h 55m

Sofia

Wed 8/20

6:15 am-11:57 pm

2 stops24h 42m

$609

BostonBurgas

BOS - BOJ

BOSBOJ

Boston Logan Intl

Tue 8/12

9:55 pm-10:30 pm

2 stops41h 35m

Bourgas

Tue 9/16

11:20 pm-8:57 pm

2 stops28h 37m

$617

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 7/8

5:05 pm-12:05 pm

1 stop12h 00m

Sofia

Mon 8/18

12:55 pm-1:40 pm

1 stop31h 45m

$620

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 10/25

6:30 pm-2:25 pm

2 stops36h 55m

Sofia

Mon 11/3

2:20 pm-2:38 pm

2 stops31h 18m

$622

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 9/29

9:35 pm-8:25 pm

1 stop15h 50m

Sofia

Tue 10/21

9:15 pm-7:40 pm

1 stop29h 25m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 33 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 $1,203). 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 June 12, 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 June 12, 2025.
See what other customers who have flown with KLM, Austrian Airlines and Air France 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
1,358 reviews

Food

7.2

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Austrian Airlines
7.6
Good
802 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Air France
7.5
Good
1,463 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,623 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
United Airlines
7.4
Good
8,790 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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 ITA Airways, which is currently one of the cheapest options available, starting at $399. Air France flights start at $433 while deals on Air Canada start at $459 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 - Bourgas and Boston Logan Intl - Varna.

  • 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 $1,203). 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.

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Alternative routes for Boston to Bulgaria

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$483Average$856FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$510Average$590FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$512Average$909FlexibilityNo cancel feeOn-time77%
SWISSCheapest$554Average$807FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$608Average$894FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$622Average$927FlexibilityNo cancel feeOn-time78%
KLMCheapest$623Average$869FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$646Average$919FlexibilityNo cancel feeOn-time76%

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