$596+ 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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Nov 29 — Dec 61
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
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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
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 October 30, 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 October 30, 2026.
This WAYA deal was found by Cheapflights users on 10/25. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:00 pm -
1 stop18h 20m
Thu 12/1010:55 am -
1 stop14h 30m
Deal found 10/25![Multiple Airlines logo]()
$596
This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:10 pm -
3 stops32h 40m
Mon 12/1410:40 am -
2 stops35h 05m
Deal found 10/29![Multiple Airlines logo]()
$628
This Mytrip deal was found by Cheapflights users on 10/26. 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 11/2710:10 pm -
2 stops20h 00m
Fri 12/119:45 pm -
2 stops29h 10m
Deal found 10/26![Multiple Airlines logo]()
$633
This lastminute.com deal was found by Cheapflights users on 10/26. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:00 pm -
1 stop12h 10m
Wed 11/259:30 am -
1 stop15h 35m
Deal found 10/26![Turkish Airlines logo]()
$676
This lastminute.com deal was found by Cheapflights users on 10/25. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:00 pm -
1 stop12h 10m
Wed 11/189:45 pm -
1 stop27h 20m
Deal found 10/25![Turkish Airlines logo]()
$678
This FlightHub deal was found by Cheapflights users on 10/26. 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.
Wed 11/118:00 pm -
1 stop17h 55m
Sun 11/159:45 pm -
1 stop27h 20m
Deal found 10/26![Turkish Airlines logo]()
$686
This FlightHub deal was found by Cheapflights users on 10/26. 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.
Fri 11/278:00 pm -
1 stop17h 55m
Fri 12/119:45 pm -
1 stop27h 20m
Deal found 10/26![Turkish Airlines logo]()
$699
This FlightHub deal was found by Cheapflights users on 10/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:00 pm -
1 stop17h 55m
Mon 11/304:00 pm -
1 stop33h 05m
Deal found 10/25![Turkish Airlines logo]()
$706
This Turkish Airlines deal was found by Cheapflights users on 10/26. 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 11/178:00 pm -
1 stop17h 55m
Tue 12/14:00 pm -
1 stop33h 05m
Deal found 10/26![Turkish Airlines logo]()
$719
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 October 30, 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 October 30, 2026.
This Turkish Airlines deal was found by Cheapflights users on 10/25. 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.
Thu 1/78:30 pm -
2 stops17h 25m
Wed 2/109:30 am -
1 stop15h 35m
Deal found 10/25![Multiple Airlines logo]()
$744
This British Airways deal was found by Cheapflights users on 10/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/147:45 pm -
1 stop14h 35m
Mon 3/225:15 pm -
1 stop33h 25m
Deal found 10/30![British Airways logo]()
$803
This Turkish Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 1/68:30 pm -
2 stops17h 25m
Wed 2/109:30 am -
1 stop15h 35m
Deal found 10/25![Multiple Airlines logo]()
$744
This Turkish Airlines deal was found by Cheapflights users on 10/26. 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 -
1 stop33h 05m
Deal found 10/26![Multiple Airlines logo]()
$744
This Turkish Airlines deal was found by Cheapflights users on 10/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/129:45 am -
2 stops15h 55m
Wed 11/259:30 am -
1 stop15h 35m
Deal found 10/29![Multiple Airlines logo]()
$784
This Turkish Airlines deal was found by Cheapflights users on 10/28. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:14 am -
2 stops18h 26m
Wed 4/149:10 pm -
1 stop29h 45m
Deal found 10/28![Multiple Airlines logo]()
$785
Last-minute flights from Boston to SofiaDiscover last-minute flight deals from Boston to Sofia. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Sofia. Data last updated October 30, 2026 and is based on user searches.
This lastminute.com deal was found by Cheapflights users on 10/25. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:00 pm -
1 stop12h 10m
Wed 11/189:45 pm -
1 stop27h 20m
Deal found 10/25![Turkish Airlines logo]()
$678
This FlightHub deal was found by Cheapflights users on 10/26. 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.
Wed 11/118:00 pm -
1 stop17h 55m
Sun 11/159:45 pm -
1 stop27h 20m
Deal found 10/26![Turkish Airlines logo]()
$686
This lastminute.com deal was found by Cheapflights users on 10/26. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:00 pm -
1 stop12h 10m
Wed 11/259:30 am -
1 stop15h 35m
Deal found 10/26![Turkish Airlines logo]()
$676
This FlightHub deal was found by Cheapflights users on 10/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:00 pm -
1 stop17h 55m
Mon 11/304:00 pm -
1 stop33h 05m
Deal found 10/25![Turkish Airlines logo]()
$706
This Turkish Airlines deal was found by Cheapflights users on 10/26. 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 11/178:00 pm -
1 stop17h 55m
Tue 12/14:00 pm -
1 stop33h 05m
Deal found 10/26![Turkish Airlines logo]()
$719
This WAYA deal was found by Cheapflights users on 10/25. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:00 pm -
1 stop18h 20m
Thu 12/1010:55 am -
1 stop14h 30m
Deal found 10/25![Multiple Airlines logo]()
$596
This Mytrip deal was found by Cheapflights users on 10/26. 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 11/2710:10 pm -
2 stops20h 00m
Fri 12/119:45 pm -
2 stops29h 10m
Deal found 10/26![Multiple Airlines logo]()
$633
This FlightHub deal was found by Cheapflights users on 10/26. 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.
Fri 11/278:00 pm -
1 stop17h 55m
Fri 12/119:45 pm -
1 stop27h 20m
Deal found 10/26![Turkish Airlines logo]()
$699
This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:10 pm -
3 stops32h 40m
Mon 12/1410:40 am -
2 stops35h 05m
Deal found 10/29![Multiple Airlines logo]()
$628
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 October 30, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $584 (WAYA) |
Popular in | June |
Cheapest in | February |
Average price | $770 |
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 October 30, 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
Thu 1/7
8:30 pm-8:55 pm
2 stops17h 25m
Sofia
Wed 2/10
9:30 am-6:05 pm
1 stop15h 35m
$744
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Wed 1/6
8:30 pm-8:55 pm
2 stops17h 25m
Sofia
Wed 2/10
9:30 am-6:05 pm
1 stop15h 35m
$744
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Tue 11/17
9:42 am-8:40 am
2 stops15h 58m
Sofia
Tue 12/1
4:00 pm-6:05 pm
1 stop33h 05m
$744
Quickest round-trip
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Thu 11/12
9:45 am-8:40 am
2 stops15h 55m
Sofia
Wed 11/25
9:30 am-6:05 pm
1 stop15h 35m
$784
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Tue 12/8
7:14 am-8:40 am
2 stops18h 26m
Sofia
Wed 4/14
9:10 pm-7:55 pm
1 stop29h 45m
$785
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Sun 3/14
7:45 pm-4:20 pm
1 stop14h 35m
Sofia
Mon 3/22
5:15 pm-8:40 pm
1 stop33h 25m
$803
Sorted 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | 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 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 |
- 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 $461). Flying from Boston to Sofia in June is currently the most expensive (average of $1,034). 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 $438 and $781 in February.The cheapest round-trip price found within the last 5 days was $584 on Multiple Airlines (Feb 24-Mar 10).
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 October 30, 2026.
Peruse reviews from past customers who have flown with KLM,Turkish Airlines, andUnited 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.
Boarding
7.8
Comfort
7.7
Food
7.4
Overall
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Boarding
7.8
Comfort
7.7
Food
7.4
Overall
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Boarding
7.8
Comfort
7.7
Food
7.4
Overall
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Boarding
7.8
Comfort
7.7
Food
7.4
Overall
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Boarding
7.8
Comfort
7.7
Food
7.4
Overall
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Boarding
7.8
Comfort
7.7
Food
7.4
Overall
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - 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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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 October 30, 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 October 30, 2026.
Popular flight searches
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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 October 30, 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 October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$394 | Average$863 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$396 | Average$495 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$403 | Average$612 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$405 | Average$813 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$410 | Average$762 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$418 | Average$808 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$688 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$527 | Average$787 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$694 | Average$1,034 | FlexibilityNo cancel fee | On-time81% |