$341+ Cheap flights from Boston (BOS) to Bulgaria
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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SOF
Nov 25 — Dec 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boston to Bulgaria 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 Bulgaria
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to BulgariaExplore 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 October 26, 2026.
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 October 26, 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 10/26. 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 WAYA deal was found by Cheapflights users on 10/24. 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.
Wed 11/258:00 pm -
1 stop22h 10m
Wed 12/910:10 am -
1 stop16h 50m
Deal found 10/24![Multiple Airlines logo]()
$656
This lastminute.com deal was found by Cheapflights users on 10/24. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:00 pm -
1 stop16h 55m
Wed 11/189:30 am -
1 stop15h 35m
Deal found 10/24![Turkish Airlines logo]()
$658
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 Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:00 pm -
1 stop28h 50m
Fri 11/69:40 am -
1 stop16h 25m
Deal found 10/25![Turkish Airlines logo]()
$686
This FlightHub deal was found by Cheapflights users on 10/22. 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.
Tue 11/178:00 pm -
1 stop12h 10m
Tue 12/19:45 pm -
1 stop27h 20m
Deal found 10/22![Turkish Airlines logo]()
$686
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:00 pm -
1 stop29h 50m
Tue 12/19:40 am -
1 stop15h 25m
Deal found 10/25![Turkish Airlines logo]()
$713
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 stop18h 00m
Wed 12/29:40 am -
1 stop15h 25m
Deal found 10/25![Turkish Airlines logo]()
$741
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 11/127:09 am -
2 stops18h 41m
Sun 11/229:40 am -
1 stop15h 25m
Deal found 10/25![Multiple Airlines logo]()
$745
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.
Fri 11/138:00 pm -
1 stop29h 50m
Fri 12/49:40 am -
1 stop15h 25m
Deal found 10/25![Turkish Airlines logo]()
$749
Best flights from Boston to BulgariaDiscover carefully curated flight deals from Boston to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Boston to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This Turkish Airlines deal was found by Cheapflights users on 10/23. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/138:00 pm -
1 stop18h 00m
Fri 1/299:40 am -
1 stop15h 25m
Deal found 10/23![Turkish Airlines logo]()
$699
This Turkish Airlines deal was found by Cheapflights users on 10/22. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/188:10 am -
2 stops17h 30m
Sun 1/319:30 am -
1 stop15h 35m
Deal found 10/22![Multiple Airlines logo]()
$744
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/612:26 pm -
3 stops27h 29m
Wed 2/107:55 am -
2 stops17h 25m
Deal found 10/25![United Airlines logo]()
$850
This Turkish Airlines deal was found by Cheapflights users on 10/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:00 pm -
1 stop16h 55m
Wed 11/189:30 am -
1 stop15h 35m
Deal found 10/21![Turkish Airlines logo]()
$703
This Turkish Airlines deal was found by Cheapflights users on 10/24. 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 1/268:10 am -
2 stops17h 30m
Tue 2/94:00 pm -
1 stop33h 05m
Deal found 10/24![Multiple Airlines logo]()
$744
This Turkish Airlines deal was found by Cheapflights users on 10/24. 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 11/179:42 am -
2 stops15h 58m
Tue 12/14:00 pm -
1 stop33h 05m
Deal found 10/24![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.
Fri 11/278:00 pm -
1 stop29h 50m
Sat 12/59:40 am -
1 stop15h 25m
Deal found 10/26![Turkish Airlines logo]()
$749
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/58:05 pm -
1 stop15h 40m
Sun 4/181:05 pm -
1 stop11h 35m
Deal found 10/26![United Airlines logo]()
$870
This Turkish Airlines deal was found by Cheapflights users on 10/23. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/138:30 pm -
2 stops17h 30m
Fri 1/299:40 am -
1 stop15h 25m
Deal found 10/23![Multiple Airlines logo]()
$745
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.
Sun 11/298:00 pm -
1 stop18h 00m
Sat 12/59:50 pm -
1 stop27h 15m
Deal found 10/26![Turkish Airlines logo]()
$749
This Turkish Airlines deal was found by Cheapflights users on 10/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:00 pm -
1 stop12h 10m
Thu 11/124:00 pm -
1 stop33h 05m
Deal found 10/21![Turkish Airlines logo]()
$749
This Turkish Airlines deal was found by Cheapflights users on 10/22. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:09 am -
2 stops18h 41m
Sat 11/219:50 pm -
1 stop27h 15m
Deal found 10/22![Multiple Airlines logo]()
$785
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.
Sun 12/68:00 pm -
1 stop29h 50m
Thu 12/109:50 pm -
1 stop27h 15m
Deal found 10/25![Turkish Airlines logo]()
$769
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.
Fri 11/138:10 pm -
2 stops17h 50m
Sun 11/229:40 am -
1 stop15h 25m
Deal found 10/26![Multiple Airlines logo]()
$785
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 1/78:10 am -
2 stops17h 30m
Wed 2/104:00 pm -
2 stops22h 26m
Deal found 10/25![Multiple Airlines logo]()
$796
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.
Thu 4/19:50 pm -
1 stop15h 30m
Wed 4/213:55 pm -
1 stop35h 00m
Deal found 10/26![Turkish Airlines logo]()
$811
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/289:30 pm -
2 stops16h 50m
Sun 12/610:00 pm -
2 stops27h 25m
Deal found 10/26![Multiple Airlines logo]()
$1,385
Last-minute flights from Boston to BulgariaDiscover last-minute flight deals from Boston to Bulgaria. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Bulgaria. Data last updated October 26, 2026 and is based on user searches.
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:00 pm -
1 stop28h 50m
Fri 11/69:40 am -
1 stop16h 25m
Deal found 10/25![Turkish Airlines logo]()
$686
This lastminute.com deal was found by Cheapflights users on 10/24. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/59:00 pm -
1 stop16h 55m
Wed 11/189:30 am -
1 stop15h 35m
Deal found 10/24![Turkish Airlines logo]()
$658
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 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 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 11/127:09 am -
2 stops18h 41m
Sun 11/229:40 am -
1 stop15h 25m
Deal found 10/25![Multiple Airlines logo]()
$745
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.
Fri 11/138:00 pm -
1 stop29h 50m
Fri 12/49:40 am -
1 stop15h 25m
Deal found 10/25![Turkish Airlines logo]()
$749
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 stop18h 00m
Wed 12/29:40 am -
1 stop15h 25m
Deal found 10/25![Turkish Airlines logo]()
$741
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:00 pm -
1 stop29h 50m
Tue 12/19:40 am -
1 stop15h 25m
Deal found 10/25![Turkish Airlines logo]()
$713
This FlightHub deal was found by Cheapflights users on 10/22. 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.
Tue 11/178:00 pm -
1 stop12h 10m
Tue 12/19:45 pm -
1 stop27h 20m
Deal found 10/22![Turkish Airlines logo]()
$686
This WAYA deal was found by Cheapflights users on 10/24. 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.
Wed 11/258:00 pm -
1 stop22h 10m
Wed 12/910:10 am -
1 stop16h 50m
Deal found 10/24![Multiple Airlines logo]()
$656
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
One-way flights from Boston to BulgariaSearch for one-way flight options from Boston to Bulgaria. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
Search for one-way flight options from Boston to Bulgaria. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/95:15 pm -
1 stop22h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:10 pm -
2 stops31h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$354
This deal was found by Cheapflights users on 10/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/39:30 pm -
1 stop11h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![British Airways logo]()
$581
This deal was found by Cheapflights users on 10/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/29:30 pm -
1 stop14h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![British Airways logo]()
$720
This business-class.com deal was found by Cheapflights users on 10/22. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:40 pm -
1 stop19h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Lufthansa logo]()
$3,581
Find flight deals from Boston to Bulgaria
Keep the following information in mind while searching for Boston to Bulgaria flight deals. Data was last updated October 26, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $578 (WAYA) |
One-way from | $300 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $770 |
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 7,457,451 searches. Data last updated October 26, 2026.
Use the filters below to find and compare flights from Boston to Bulgaria 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
Wed 12/9
6:00 pm-9:05 pm
3 stops20h 05m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$359
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Mon 11/2
9:20 pm-1:55 pm
1 stop33h 35m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$439
BostonVarna
BOS Boston Logan Intl - VAR Varna
BOSVAR
Boston Logan Intl
Wed 1/13
8:00 pm-9:00 pm
1 stop18h 00m
Varna
Fri 1/29
9:40 am-6:05 pm
1 stop15h 25m
$699
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Thu 11/5
9:00 pm-8:55 pm
1 stop16h 55m
Sofia
Wed 11/18
9:30 am-6:05 pm
1 stop15h 35m
$703
Quickest round-trip
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Sat 1/2
9:30 pm-6:35 pm
1 stop14h 05m
Sofia
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$720
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Mon 1/18
8:10 am-8:40 am
2 stops17h 30m
Sofia
Sun 1/31
9:30 am-6:05 pm
1 stop15h 35m
$744
BostonSofia
BOS Boston Logan Intl - SOF Sofia
BOSSOF
Boston Logan Intl
Tue 1/26
8:10 am-8:40 am
2 stops17h 30m
Sofia
Tue 2/9
4:00 pm-6:05 pm
1 stop33h 05m
$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
BostonVarna
BOS Boston Logan Intl - VAR Varna
BOSVAR
Boston Logan Intl
Wed 1/13
8:30 pm-9:00 pm
2 stops17h 30m
Varna
Fri 1/29
9:40 am-6:05 pm
1 stop15h 25m
$745
BostonVarna
BOS Boston Logan Intl - VAR Varna
BOSVAR
Boston Logan Intl
Fri 11/27
8:00 pm-8:50 am
1 stop29h 50m
Varna
Sat 12/5
9:40 am-6:05 pm
1 stop15h 25m
$749
Showing 1-10 of 20 resultsSorted by cheapest first
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.
BOS-SOF
BOS-VAR
BOS-BOJ
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
BOS-BG0
BOS-SOF
BOS-VAR
BOS-BOJ
What is the cheapest month to book a flight from Boston to Bulgaria?
Currently, February is the cheapest month in which you can book a flight from Boston to Bulgaria (average of $461). Flying from Boston to Bulgaria 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 far ahead should I book a flight from Boston to Bulgaria?
Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Bulgaria. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 October 26, 2026.
See what other customers who have flown with KLM,Austrian Airlines, andTurkish Airlines from Boston to Bulgaria have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Crew
8.4
Comfort
7.7
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Crew
8.4
Comfort
7.7
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Crew
8.4
Comfort
7.7
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Crew
8.4
Comfort
7.7
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Crew
8.4
Comfort
7.7
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Crew
8.4
Comfort
7.7
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
Alternative routes for Boston to Bulgaria
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Bulgaria by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Bulgaria by cabin class
Find flights from Boston to Bulgaria, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Bulgaria flights
Browse other Boston and Bulgaria flight options. Last updated on October 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Boston to Bulgaria flights
Consider these flights traveling from Boston to Bulgaria.
Fly to Bulgaria regions
Consider these flights traveling to Bulgaria regions.
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 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$357 | Average$719 | 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$787 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$410 | Average$762 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$416 | Average$909 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$421 | Average$688 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$514 | Average$770 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$694 | Average$1,034 | FlexibilityNo cancel fee | On-time81% |