Earn point on your loyalty program!arrow arc left

Cheap flights from Boston (BOS) to Sofia (SOF)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Boston (BOS) to Sofia (SOF)

How to find the cheapest flight from Boston (BOS) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Boston to Sofia in July , August 2026

28 Jul - 26 Aug $ 914.00
BOS
Boston
United Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
1 STOPS
BOS
Boston
Pick dates
26 Jul - 13 Aug $ 1,036.00
BOS
Boston
Swiss International Air Lines
1 STOPS
SOF
Sofia
SOF
Sofia
Swiss International Air Lines
2 STOPS
BOS
Boston
Pick dates
26 Jul - 12 Aug $ 1,146.00
BOS
Boston
United Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
1 STOPS
BOS
Boston
Pick dates

Last minute flights from Boston to Sofia

28 Jul - 31 Jul $ 1,300.00
BOS
Boston
Lufthansa
2 STOPS
SOF
Sofia
SOF
Sofia
Lufthansa
1 STOPS
BOS
Boston
Pick dates
27 Jul - 31 Jul $ 1,464.00
BOS
Boston
Austrian Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
Austrian Airlines
1 STOPS
BOS
Boston
Pick dates
27 Jul - 31 Jul $ 1,478.00
BOS
Boston
Austrian Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
Austrian Airlines
1 STOPS
BOS
Boston
Pick dates

One-way flights to Sofia from Boston

5:10 PM - 12:45 PM
Wizz Air
2 Stops
15h 35m
BOS - SOF
$ 406
Kiwi
Pick dates
5:10 PM - 9:10 AM
Austrian Airlines
1 Stops
11h 30m
BOS - SOF
$ 468
Kiwi
Pick dates
5:10 PM - 7:05 AM
Swiss International Air Lines
1 Stops
10h 10m
BOS - SOF
$ 588
Kiwi
Pick dates

How to find the cheapest flight from Boston (BOS) to Sofia (SOF)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.