AirHint found the following cheapest return flights from Xi'an (XIY) to Singapore (SIN) in December 2025 (see full year).
Return flights
| 17 Dec - 07 Jan | AirAsia X | ||
| 05 Dec - 10 Dec | Cathay Pacific | ||
| 03 Dec - 10 Dec | AirAsia X | ||
| 08 Dec - 19 Dec | China Southern | ||
| 08 Dec - 19 Dec | Scoot | direct |
Also check the deals for one-way flights from Xi'an to Singapore in December.
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