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

Return flights

04 Dec - 11 Dec	Iberia
07 Dec - 14 Dec	Iberia
01 Dec - 08 Dec	Iberia
10 Dec - 17 Dec	Iberia
23 Dec - 16 Jan	Air France
23 Dec - 18 Jan	Air France
23 Dec - 17 Jan	Air France
16 Dec - 30 Dec	Lufthansa
24 Dec - 05 Jan	Lufthansa
19 Dec - 09 Jan	Hawaiian Airlines
21 Dec - 10 Jan	Lufthansa
19 Dec - 24 Dec	Hawaiian Airlines
18 Dec - 28 Dec	American Airlines
13 Dec - 20 Dec	Iberia
18 Dec - 29 Dec	Lufthansa
23 Dec - 30 Dec	Iberia
20 Dec - 10 Jan	jetBlue
23 Dec - 04 Jan	Alaska Airlines
28 Dec - 04 Jan	Iberia
21 Dec - 03 Jan	Lufthansa

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

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 Madrid

Cheap car rent in Madrid

Cheapest return flights from San Diego to Madrid in December from 440€

Return flights