$277+ Cheap flights from Boston (BOS) to Sofia (SOF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Oct 25 — Nov 11
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Sofia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Sofia
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to SofiaExplore the most affordable flight options available from Boston to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.
Explore the most affordable flight options available from Boston to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.
This Mytrip deal was found by Cheapflights users on 9/21. 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 11/1810:25 am -
2 stops30h 10m
Thu 11/266:05 am -
2 stops19h 30m
Deal found 9/21![Multiple Airlines logo]()
$610
This WAYA deal was found by Cheapflights users on 9/24. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:15 pm -
1 stop14h 45m
Mon 11/910:40 am -
1 stop14h 00m
Deal found 9/24![Multiple Airlines logo]()
$624
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 10/189:40 pm -
1 stop10h 15m
Mon 11/26:45 pm -
1 stop25h 45m
Deal found 9/23![Multiple Airlines logo]()
$649
This Mytrip deal was found by Cheapflights users on 9/23. 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.
Mon 11/1610:25 am -
2 stops23h 35m
Mon 11/3010:40 am -
2 stops34h 05m
Deal found 9/23![Multiple Airlines logo]()
$654
This British Airways deal was found by Cheapflights users on 9/21. 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.
Sun 11/156:45 pm -
1 stop14h 35m
Wed 11/259:05 pm -
1 stop24h 15m
Deal found 9/21![British Airways logo]()
$659
This Gotogate deal was found by Cheapflights users on 9/21. 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.
Wed 11/119:50 pm -
1 stop10h 35m
Wed 11/252:00 pm -
1 stop11h 35m
Deal found 9/21![Multiple Airlines logo]()
$660
This Mytrip deal was found by Cheapflights users on 9/21. 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.
Sun 10/2510:50 pm -
2 stops20h 20m
Mon 11/94:55 pm -
3 stops33h 07m
Deal found 9/21![Multiple Airlines logo]()
$662
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Wed 11/189:50 pm -
1 stop10h 35m
Thu 11/264:15 pm -
1 stop35h 05m
Deal found 9/21![SWISS logo]()
$665
Best flights from Boston to SofiaDiscover carefully curated flight deals from Boston to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.
Discover carefully curated flight deals from Boston to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.
This Lufthansa deal was found by Cheapflights users on 9/21. 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.
Wed 11/189:50 pm -
1 stop10h 35m
Fri 11/277:55 am -
1 stop12h 35m
Deal found 9/21![Multiple Airlines logo]()
$680
This British Airways deal was found by Cheapflights users on 9/22. 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.
Sun 10/2510:30 pm -
1 stop11h 50m
Mon 11/95:15 pm -
1 stop28h 05m
Deal found 9/22![British Airways logo]()
$727
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Sun 10/2510:30 am -
2 stops20h 45m
Mon 11/92:00 pm -
1 stop11h 35m
Deal found 9/22![United Airlines logo]()
$744
This oojo deal was found by Cheapflights users on 9/25. 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 11/178:00 pm -
1 stop12h 10m
Tue 12/19:40 pm -
1 stop27h 25m
Deal found 9/25![Turkish Airlines logo]()
$779
This United Airlines deal was found by Cheapflights users on 9/23. 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 2/277:35 pm -
2 stops34h 40m
Sun 3/77:55 am -
1 stop12h 35m
Deal found 9/23![United Airlines logo]()
$757
This British Airways deal was found by Cheapflights users on 9/22. 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.
Sat 2/279:30 pm -
1 stop14h 05m
Sun 3/77:45 pm -
1 stop25h 35m
Deal found 9/22![British Airways logo]()
$768
This Turkish Airlines deal was found by Cheapflights users on 9/24. 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.
Tue 11/39:42 am -
2 stops15h 58m
Tue 11/179:30 am -
1 stop15h 35m
Deal found 9/24![Multiple Airlines logo]()
$786
This Turkish Airlines deal was found by Cheapflights users on 9/25. 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.
Tue 11/179:42 am -
2 stops15h 58m
Tue 12/14:00 pm -
2 stops22h 39m
Deal found 9/25![Multiple Airlines logo]()
$796
This British Airways deal was found by Cheapflights users on 9/25. 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.
Sun 12/136:45 pm -
1 stop14h 35m
Mon 1/185:15 pm -
1 stop33h 25m
Deal found 9/25![British Airways logo]()
$796
Last-minute flights from Boston to SofiaDiscover last-minute flight deals from Boston to Sofia. Data last updated September 25, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Sofia. Data last updated September 25, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 9/22. 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.
Sun 10/115:28 pm -
2 stops18h 52m
Wed 11/49:05 pm -
2 stops26h 35m
Deal found 9/22![British Airways logo]()
$667
This FlightHub deal was found by Cheapflights users on 9/22. 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.
Sun 10/119:40 pm -
1 stop31h 35m
Wed 11/42:00 pm -
1 stop11h 35m
Deal found 9/22![Multiple Airlines logo]()
$681
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 10/189:40 pm -
1 stop10h 15m
Mon 11/26:45 pm -
1 stop25h 45m
Deal found 9/23![Multiple Airlines logo]()
$649
This Mytrip deal was found by Cheapflights users on 9/21. 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.
Sun 10/2510:50 pm -
2 stops20h 20m
Mon 11/94:55 pm -
3 stops33h 07m
Deal found 9/21![Multiple Airlines logo]()
$662
This Gotogate deal was found by Cheapflights users on 9/21. 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.
Sun 10/257:55 pm -
1 stop16h 05m
Mon 11/912:35 pm -
1 stop31h 55m
Deal found 9/21![Austrian Airlines logo]()
$671
This WAYA deal was found by Cheapflights users on 9/24. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:15 pm -
1 stop14h 45m
Mon 11/910:40 am -
1 stop14h 00m
Deal found 9/24![Multiple Airlines logo]()
$624
One-way flights from Boston to SofiaSearch for one-way flight options from Boston to Sofia. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
Search for one-way flight options from Boston to Sofia. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 11/87:50 pm -
3 stops32h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 11/107:50 pm -
3 stops32h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 1/177:50 pm -
3 stops41h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$322
This Expedia deal was found by Cheapflights users on 9/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/176:45 pm -
1 stop14h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![British Airways logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 9/24. 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.
Fri 3/57:50 pm -
2 stops20h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/229:40 pm -
3 stops30h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$382
Find flight deals from Boston to Sofia
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 25, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $610 (Mytrip) |
One-way from | $271 (Kiwi.com) |
Popular in | May |
Cheapest in | February |
Average price | $873 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Sofia 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 7,457,451 searches. Data last updated September 25, 2026.
Use the filters below to find and compare flights from Boston to Sofia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Sun 11/8
7:50 pm-11:20 am
3 stops32h 30m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$277
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Tue 11/10
5:15 pm-12:35 pm
2 stops36h 20m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$343
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Fri 3/5
7:50 pm-11:10 pm
2 stops20h 20m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$367
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Thu 10/22
9:40 pm-11:10 am
3 stops30h 30m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$382
Quickest round-trip
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Fri 3/5
6:55 pm-11:50 am
1 stop9h 55m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$416
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Wed 11/18
9:50 pm-3:25 pm
1 stop10h 35m
Sofia
Fri 11/27
7:55 am-1:30 pm
1 stop12h 35m
$680
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Sun 10/25
10:30 pm-4:20 pm
1 stop11h 50m
Sofia
Mon 11/9
5:15 pm-2:20 pm
1 stop28h 05m
$727
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Sun 10/25
10:30 am-1:15 pm
2 stops20h 45m
Sofia
Mon 11/9
2:00 pm-6:35 pm
1 stop11h 35m
$744
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Sat 2/27
7:35 pm-1:15 pm
2 stops34h 40m
Sofia
Sun 3/7
7:55 am-1:30 pm
1 stop12h 35m
$757
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Sat 2/27
9:30 pm-6:35 pm
1 stop14h 05m
Sofia
Sun 3/7
7:45 pm-2:20 pm
1 stop25h 35m
$768
Showing 1-10 of 14 resultsSorted by cheapest first
Compare providers for flights from Boston to Sofia
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Sofia in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Boston-Sofia flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boston-Sofia flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Boston-Sofia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Sofia flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Sofia
Have a flexible travel schedule? Discover the best time to fly to Sofia from Boston with our price prediction graph.
BOS-SOF
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 Sofia
Prices
More
How far ahead should I book a flight from Boston to Sofia?
The best time to book flights from Boston to Sofia is 59 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.
What is the cheapest month to book a flight from Boston to Sofia?
Currently, February is the cheapest month in which you can book a flight from Boston to Sofia (average of $460). Flying from Boston to Sofia in May is currently the most expensive (average of $1,006). 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 much does it cost to fly round-trip from Boston to Sofia?
Airfare is typical for this route at the moment.
Boston to Sofia flights typically cost between $564 and $920 in November.The cheapest round-trip price found within the last 5 days was $610 on Multiple Airlines (Nov 18-Nov 26).
What’s the top layover airport for flights from Boston to Sofia?
Share of 1-stop round-trip flights from Boston to Sofia chosen by Cheapflights users in the past 12 months, using the same layover each way.
Munich (MUC) – chosen by Cheapflights users on 89% of 1-stop itineraries from Boston to Sofia on Cheapflights.
What’s the cheapest layover airport for flights from Boston to Sofia?
Average round-trip fare for 1-stop flights from Boston to Sofia, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Zurich (ZRH) is the most affordable 1-stop option, with an average round-trip price of $878.
What’s the fastest layover option from Boston to Sofia?
Shortest average travel time for 1-stop one-way flights from Boston to Sofia, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Zurich (ZRH) have the shortest average one-way travel time for 1-stop routes: 12h 05m.
Which airport typically offers the quickest layover for flights from Boston to Sofia?
Average layover duration for 1-stop one-way flights from Boston to Sofia, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Zurich (ZRH) offer the fastest connection on this route, with an average layover time of 2h 35m.
Reviews of airlines servicing Sofia
Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated September 25, 2026.
Peruse reviews from past customers who have flown with KLM,Austrian Airlines, andTurkish Airlines from Boston to Sofia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Crew
8.4
Boarding
7.8
Entertainment
7.2
Food
7.3
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Related info for your journey
Find useful and relevant information for your journey from Boston to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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Search flights from Boston to Sofia by cabin class
Find flights from Boston to Sofia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Sofia flights
Browse other Boston and Sofia flight options. Last updated on September 25, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Sofia
Explore flights to Sofia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.
Top 9 airlines flying from Boston to Sofia
Discover the top 9 airlines that operate flights from Boston to Sofia. 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 7,457,451 searches. Data last updated September 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$394 | Average$705 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$394 | Average$787 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$394 | Average$495 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$403 | Average$576 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$410 | Average$762 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$415 | Average$740 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$688 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$524 | Average$781 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$694 | Average$1,034 | FlexibilityNo cancel fee | On-time81% |