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$401+ Cheap flights from Bulgaria 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — BOS
Jul 1 — Jul 81
Wed 7/1
Wed 7/8
1 adult, Economy
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Cheap flight deals from Bulgaria to Boston

Cheapest flights from Bulgaria to Boston
Explore the most affordable flight options available from Bulgaria to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 1, 2026.

This Trip.com deal was found by Cheapflights users on 5/31. 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 9/86:45 pm
SOF
-
BOS
2 stops32h 25m
Multiple Airlines
Thu 10/152:21 pm
BOS
-
SOF
2 stops28h 14m
Multiple Airlines
Deal found 5/31$695
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
Sun 9/206:15 am
SOF
-
BOS
1 stop22h 30m
Multiple Airlines
Wed 9/3010:55 pm
BOS
-
SOF
2 stops17h 15m
Multiple Airlines
Deal found 5/29$719
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:25 pm
SOF
-
BOS
1 stop28h 40m
Multiple Airlines
Tue 11/247:50 pm
BOS
-
SOF
2 stops31h 45m
Multiple Airlines
Deal found 5/27$747
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:25 pm
SOF
-
BOS
1 stop28h 40m
Multiple Airlines
Fri 11/277:50 pm
BOS
-
SOF
2 stops31h 10m
Multiple Airlines
Deal found 5/27$748
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:25 pm
SOF
-
BOS
1 stop28h 40m
Multiple Airlines
Sun 11/296:55 pm
BOS
-
SOF
1 stop9h 55m
Multiple Airlines
Deal found 5/27$756
This Gotogate deal was found by Cheapflights users on 6/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:30 am
SOF
-
BOS
1 stop20h 40m
Lufthansa
Tue 9/228:05 pm
BOS
-
SOF
1 stop20h 10m
Lufthansa
Deal found 6/1$764
This Gotogate deal was found by Cheapflights users on 6/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:20 am
SOF
-
BOS
1 stop20h 50m
Lufthansa
Wed 9/238:05 pm
BOS
-
SOF
1 stop15h 35m
Lufthansa
Deal found 6/1$767
This SmartFares deal was found by Cheapflights users on 5/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/41:05 pm
SOF
-
BOS
1 stop13h 50m
Turkish Airlines
Sat 10/179:50 pm
BOS
-
SOF
1 stop15h 25m
Turkish Airlines
Deal found 5/30$772
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:25 pm
SOF
-
BOS
1 stop28h 40m
Multiple Airlines
Wed 11/258:40 pm
BOS
-
SOF
2 stops17h 25m
Multiple Airlines
Deal found 5/27$774
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:30 am
SOF
-
BOS
2 stops22h 15m
Multiple Airlines
Sun 11/296:55 pm
BOS
-
SOF
1 stop9h 55m
Multiple Airlines
Deal found 5/27$776
This Booking.com deal was found by Cheapflights users on 5/29. 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.
Thu 7/26:30 am
SOF
-
BOS
1 stop16h 10m
Multiple Airlines
Sun 9/69:40 pm
BOS
-
SOF
1 stop10h 15m
Multiple Airlines
Deal found 5/29$784

Find flight deals from Bulgaria to Boston

Keep the following information in mind while searching for Bulgaria to Boston flight deals. Data was last updated June 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$695
(Trip.com)

One-way from

$401
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$744
Provider with most accurate pricing for Sofia-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-Boston Logan Intl flights.
Search Deals
From Bulgaria to Boston Logan Intl
Search Deals
One-way flight from Bulgaria to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bulgaria 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 June 1, 2026.
Use the filters below to find and compare flights from Bulgaria to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 6/27

1:55 pm-8:10 pm

1 stop13h 15m

Boston Logan Intl

Sat 8/8

8:05 pm-6:40 pm

1 stop15h 35m

$790

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 7/20

6:20 am-3:40 pm

1 stop16h 20m

Boston Logan Intl

Wed 8/12

8:05 pm-11:15 pm

1 stop20h 10m

$790

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 10/14

1:50 pm-8:10 pm

1 stop13h 20m

Boston Logan Intl

Fri 11/27

8:40 pm-10:45 pm

1 stop19h 05m

$791

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 10/13

2:10 pm-8:10 pm

1 stop13h 00m

Boston Logan Intl

Fri 11/27

8:40 pm-10:45 pm

1 stop19h 05m

$791

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 7/4

6:20 am-3:40 pm

1 stop16h 20m

Boston Logan Intl

Tue 9/8

8:05 pm-6:40 pm

1 stop15h 35m

$791

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 7/2

6:30 am-3:40 pm

1 stop16h 10m

Boston Logan Intl

Mon 9/7

5:45 am-12:10 pm

2 stops23h 25m

$793

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 7/2

6:30 am-2:41 pm

2 stops15h 11m

Boston Logan Intl

Sun 9/6

9:29 am-11:15 pm

2 stops30h 46m

$794

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 9/11

6:20 am-8:10 pm

1 stop20h 50m

Boston Logan Intl

Wed 9/23

6:50 pm-10:50 pm

2 stops21h 00m

$794

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 6/13

6:20 am-11:46 am

2 stops36h 26m

Boston Logan Intl

Mon 6/29

8:05 pm-11:15 pm

1 stop20h 10m

$799
Cheapest one-way

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 9/16

4:40 pm-7:41 pm

3 stops34h 01m

$401

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/1

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Bulgaria to Boston

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

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

Currently, January is the cheapest month in which you can book a flight from Bulgaria to Boston (average of $537). Flying from Bulgaria to Boston in February is currently the most expensive (average of $779). 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.

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

The best time to book flights from Bulgaria to Boston is 33 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 June 1, 2026.
Read through reviews of airlines operating flights from Bulgaria to Boston, such as KLM,Austrian Airlines, andTurkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,524 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,524 reviews
KLM
7.8
Good
1,524 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Austrian Airlines
7.6
Good
921 reviews
KLM
7.8
Good
1,524 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Turkish Airlines
7.4
Good
4,408 reviews
KLM
7.8
Good
1,524 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
United Airlines
7.4
Good
9,776 reviews
KLM
7.8
Good
1,524 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Lufthansa
6.8
Okay
8,034 reviews
KLM
7.8
Good
1,524 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

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

    For a flight from Bulgaria to Boston, you will be flying into Logan Intl. Boston Logan Intl (BOS) is just 2.6 mi from the center of the city.

  • How long is the flight from Bulgaria to Boston?

    United Airlines and Lufthansa can get you from Bulgaria to Boston in just under 13h 15m. Your travel time can differ by up to 05m. Bulgaria and Boston are separated by a distance of 4521 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $548 on SWISS. Other airlines that offer cheap prices include Lufthansa from $590 and Austrian Airlines from $651 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Bulgaria to Boston (average of $537). Flying from Bulgaria to Boston in February is currently the most expensive (average of $779). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Waltham
Cambridge
Concord
Hampton Beach
Brockton
Watertown
Seekonk
Cranston
Chelsea
Warwick
Peabody
York Beach
Londonderry
Swansea
Old Orchard Beach
Auburn
Lowell
Smithfield
Braintree
Sandwich

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Bulgaria to Boston

Discover the top 6 airlines that operate flights from Bulgaria 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 June 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest$590Average$733FlexibilityNo cancel feeOn-time78%
KLMCheapest$592Average$792FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$649Average$774FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$651Average$749FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$658Average$794FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$682Average$842FlexibilityNo cancel feeOn-time77%

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