Cheapest return flights from London to San Francisco in December from $1086

AirHint found the following cheapest return flights from London (LCY) to San Francisco (SFO) in December 2026 (see full year).

Return flights

23 Dec - 05 Jan SWISS
23 Dec - 03 Jan ITA Airways
21 Dec - 29 Dec ITA Airways
23 Dec - 29 Dec ITA Airways
26 Dec - 31 Dec SWISS
18 Dec - 27 Dec Aer Lingus
24 Dec - 30 Dec KLM
21 Dec - 27 Dec KLM
23 Dec - 31 Dec SWISS
27 Dec - 02 Jan KLM
25 Dec - 02 Jan KLM
22 Dec - 31 Dec Iberia
22 Dec - 30 Dec Aer Lingus
18 Dec - 31 Dec Aer Lingus

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

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