AirHint found the following cheapest one-way flights from Washington (IAD) to Singapore (SIN) in December 2024 (see full year).
10 Dec | Qatar Airways | ||
15 Dec | Icelandair | ||
12 Dec | Alaska Airlines | ||
17 Dec | Delta | ||
13 Dec | Emirates | ||
20 Dec | Frontier Airlines |
Also check the deals for return flights from Washington to Singapore in December.
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.