AirHint found the following cheapest one-way flights from Washington (DCA) to Singapore (SIN) in December 2025 (see full year).
One-Way flights
| 11 Dec | Hawaiian Airlines | ||
| 05 Dec | Frontier Airlines | ||
| 10 Dec | Japan Airlines | ||
| 12 Dec | Alaska Airlines | ||
| 26 Dec | Delta | ||
| 22 Dec | China Airlines | ||
| 17 Dec | Delta | ||
| 27 Dec | EVA Air | ||
| 19 Dec | jetBlue |
Also check the deals for return flights from Washington to Singapore in December.
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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.
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