Earn point on your loyalty program!arrow arc left

Cheap flights from Seattle (BFI) 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 Seattle (BFI) to Sofia (SOF)

How to find the cheapest flight from Seattle (BFI) 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 Seattle (BFI) 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 Seattle (BFI) 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 Seattle to Sofia in June , July 2026

29 Jun - 28 Jul $ 2,007.00
BFI
Seattle
Air Excursions
3 STOPS
SOF
Sofia
SOF
Sofia
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Jun - 23 Jul $ 2,037.00
BFI
Seattle
Air Excursions
3 STOPS
SOF
Sofia
SOF
Sofia
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Jun - 16 Jul $ 2,040.00
BFI
Seattle
Air Excursions
3 STOPS
SOF
Sofia
SOF
Sofia
Air Excursions
3 STOPS
BFI
Seattle
Pick dates

One-way flights to Sofia from Seattle

8:20 AM - 7:35 AM
Norwegian Air Shuttle
3 Stops
41h 20m
BFI - SOF
$ 956
Kiwi
Pick dates
8:20 AM - 10:20 PM
Wizz Air
3 Stops
29h 10m
BFI - SOF
$ 991
Kiwi
Pick dates
8:20 AM - 7:30 PM
Lufthansa
2 Stops
28h 20m
BFI - SOF
$ 1,299
Kiwi
Pick dates

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