AirHint found the following cheapest return flights from San Francisco (SFO) to Bologna (BLQ) in December 2025 (see full year).

Return flights

09 Dec - 16 Dec	Lufthansa
10 Dec - 17 Dec	Lufthansa
08 Dec - 15 Dec	SWISS
30 Dec - 06 Jan	British Airways
31 Dec - 07 Jan	British Airways
11 Dec - 18 Dec	Lufthansa
07 Dec - 14 Dec	SWISS
15 Dec - 22 Dec	Lufthansa
25 Dec - 17 Jan	British Airways
29 Dec - 05 Jan	British Airways
12 Dec - 19 Dec	British Airways
06 Dec - 13 Dec	United
13 Dec - 20 Dec	British Airways
14 Dec - 21 Dec	Lufthansa
17 Dec - 15 Jan	SWISS
17 Dec - 16 Jan	SWISS
25 Dec - 01 Jan	British Airways
28 Dec - 04 Jan	SWISS
27 Dec - 03 Jan	TAP
26 Dec - 02 Jan	Lufthansa

Also check the deals for one-way flights from San Francisco to Bologna in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from San Francisco to Bologna in December from $529

Return flights