AirHint found the following cheapest return flights from Dallas (DAL) to Singapore (SIN) in December 2025 (see full year).
Return flights
| 08 Dec - 15 Dec | Air France | ||
| 29 Dec - 20 Jan | Delta | ||
| 07 Dec - 10 Jan | Delta | ||
| 23 Dec - 31 Dec | KLM | ||
| 15 Dec - 30 Dec | Air France |
Also check the deals for one-way flights from Dallas to Singapore in December.
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