Cheapest return flights from San Francisco to Brussels in December from $843

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

Return flights

29 Dec - 11 Jan TAP
14 Dec - 24 Dec Aer Lingus
25 Dec - 28 Dec ITA Airways
15 Dec - 24 Dec Aer Lingus
16 Dec - 25 Dec Air Canada
14 Dec - 20 Dec Lufthansa
23 Dec - 07 Jan Frontier Airlines
18 Dec - 28 Dec Scandinavian Airlines
20 Dec - 13 Jan Frontier Airlines
19 Dec - 25 Dec ANA
25 Dec - 04 Jan Scandinavian Airlines
24 Dec - 31 Dec Lufthansa
19 Dec - 24 Dec KLM
17 Dec - 30 Dec Brussels Airlines
21 Dec - 05 Jan Alaska Airlines
26 Dec - 02 Jan Lufthansa
24 Dec - 04 Jan KLM

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

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