Earn point on your loyalty program!arrow arc left

Cheap flights from Belfast (BFS) to San Francisco (SFO)

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 Belfast (BFS) to San Francisco (SFO)

How to find the cheapest flight from Belfast (BFS) to San Francisco (SFO)
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 Belfast (BFS) to San Francisco (SFO)
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 Belfast (BFS) to San Francisco (SFO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Belfast to San Francisco in September , October 2026

30 Sep - 07 Oct $ 1,291.00
BFS
Belfast
easyJet
2 STOPS
SFO
San Francisco
SFO
San Francisco
easyJet
2 STOPS
BFS
Belfast
Pick dates
30 Sep - 07 Oct $ 1,348.00
BFS
Belfast
easyJet
2 STOPS
SFO
San Francisco
SFO
San Francisco
easyJet
2 STOPS
BFS
Belfast
Pick dates
29 Sep - 07 Oct $ 1,367.00
BFS
Belfast
easyJet
2 STOPS
SFO
San Francisco
SFO
San Francisco
easyJet
2 STOPS
BFS
Belfast
Pick dates

Last minute flights from Belfast to San Francisco

28 Sep - 01 Oct $ 1,452.00
BFS
Belfast
easyJet
3 STOPS
SFO
San Francisco
SFO
San Francisco
easyJet
2 STOPS
BFS
Belfast
Pick dates
29 Sep - 02 Oct $ 2,488.00
BFS
Belfast
Virgin Atlantic Airways
2 STOPS
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic Airways
1 STOPS
BFS
Belfast
Pick dates
29 Sep - 01 Oct $ 2,726.00
BFS
Belfast
Virgin Atlantic Airways
2 STOPS
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic Airways
1 STOPS
BFS
Belfast
Pick dates

One-way flights to San Francisco from Belfast

9:05 PM - 6:20 PM
JetBlue Airways
3 Stops
32h 46m
BFS - SFO
$ 853
Kiwi
Pick dates
5:55 PM - 1:00 PM
Aer Lingus
2 Stops
30h
BFS - SFO
$ 1,736
Kiwi
Pick dates
7:00 AM - 1:00 PM
Aer Lingus
2 Stops
16h 55m
BFS - SFO
$ 1,749
Kiwi
Pick dates

How to find the cheapest flight from Belfast (BFS) to San Francisco (SFO)

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 Belfast (BFS) to San Francisco (SFO)
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 Belfast (BFS) to San Francisco (SFO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.