AirHint found the following cheapest one-way flights from Washington (DCA) to Singapore (SIN) in November 2025 (see full year).
One-Way flights
| 12 Nov | Alaska Airlines | ||
| 13 Nov | jetBlue | ||
| 20 Nov | Japan Airlines | ||
| 21 Nov | Delta |
Also check the deals for return flights from Washington to Singapore in November.
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