AirHint found the following cheapest return flights from San Diego (SAN) to Singapore (SIN) in December 2025 (see full year).
Return flights
| 26 Dec - 10 Jan | Singapore Airlines | ||
| 27 Dec - 10 Jan | Singapore Airlines | ||
| 25 Dec - 02 Jan | Air Canada | ||
| 26 Dec - 02 Jan | Singapore Airlines | ||
| 22 Dec - 02 Jan | Alaska Airlines | ||
| 20 Dec - 02 Jan | Air Canada |
Also check the deals for one-way flights from San Diego to Singapore 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.
Find us on social media