AirHint found the following cheapest return flights from Adelaide (ADL) to Madrid (MAD) in December 2025 (see full year).
Return flights
| 15 Dec - 22 Jan | China Southern | ||
| 18 Dec - 19 Jan | Virgin Australia | ||
| 02 Dec - 27 Jan | Qantas | ||
| 31 Dec - 09 Jan | Qantas | ||
| 20 Dec - 27 Dec | Qatar Airways | ||
| 15 Dec - 07 Jan | Emirates |
Also check the deals for one-way flights from Adelaide to Madrid in December.
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