AirHint found the following cheapest return flights from Denver (DEN) to Manila (MNL) in December 2025 (see full year).
Return flights
| 03 Dec - 15 Dec | ANA | ||
| 22 Dec - 26 Dec | Frontier Airlines | ||
| 06 Dec - 27 Dec | United | ||
| 06 Dec - 28 Dec | United | ||
| 18 Dec - 30 Dec | Alaska Airlines |
Also check the deals for one-way flights from Denver to Manila in December.
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