AirHint found the following cheapest return flights from Sacramento (SMF) to London (LHR) in January 2026 (see full year).

Return flights

12 Jan - 22 Jan	Scandinavian Airlines
09 Jan - 12 Jan	United
30 Jan - 15 Feb	Air Canada

Also check the deals for one-way flights from Sacramento to London in January.

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 Sacramento to London in January from $601

Return flights