AirHint found the following cheapest return flights from Washington (IAD) to Kuala Lumpur (KUL) in December 2025 (see full year).
Return flights
| 01 Dec - 16 Dec | Turkish Airlines | ||
| 31 Dec - 19 Jan | Qatar Airways | ||
| 30 Dec - 06 Jan | Saudia | ||
| 16 Dec - 31 Dec | Hawaiian Airlines | ||
| 25 Dec - 04 Jan | Frontier Airlines |
Also check the deals for one-way flights from Washington to Kuala Lumpur in December.
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