Cheapest return flights from Madrid to San Francisco in September from $485

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 September 2025 (see full year).

Return flights

30 Sep - 22 Oct Scandinavian Airlines
25 Sep - 28 Sep Scandinavian Airlines
28 Sep - 15 Oct Scandinavian Airlines
30 Sep - 05 Oct Scandinavian Airlines
02 Sep - 09 Sep Scandinavian Airlines
20 Sep - 23 Sep TAP
08 Sep - 14 Sep Scandinavian Airlines
18 Sep - 25 Sep Finnair direct
09 Sep - 16 Sep Finnair direct
03 Sep - 21 Sep SWISS
29 Sep - 06 Oct Condor
04 Sep - 11 Sep Iberia
01 Sep - 30 Sep Iberia
04 Sep - 18 Sep Iberia
29 Sep - 12 Oct Iberia
09 Sep - 15 Oct Delta
27 Sep - 12 Oct Delta
27 Sep - 18 Oct Delta

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

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.

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