Cheapest return flights from Madrid to San Francisco in December from $573

Best time to book flights for Madrid (MAD) to San Francisco (SFO) flights at AirHint

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

Return flights

06 Dec - 14 Dec SWISS
04 Dec - 11 Dec Lufthansa
01 Dec - 14 Dec United
04 Dec - 07 Dec KLM
26 Dec - 07 Jan KLM
26 Dec - 08 Jan KLM
26 Dec - 04 Jan Delta
25 Dec - 08 Jan Delta
25 Dec - 07 Jan Delta
25 Dec - 06 Jan Delta
22 Dec - 04 Jan SWISS
20 Dec - 03 Jan SWISS

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

Skyscanner

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.

Book a cheap hotel in San Francisco

Cheap car rent in San Francisco