AirHint found the following cheapest return flights from Washington (IAD) to Singapore (SIN) in January 2026 (see full year).

Return flights

31 Jan - 11 Feb	Etihad Airways
18 Jan - 22 Jan	Turkish Airlines
18 Jan - 25 Jan	Turkish Airlines
26 Jan - 31 Jan	Turkish Airlines
26 Jan - 30 Jan	Turkish Airlines
05 Jan - 20 Jan	United
19 Jan - 26 Jan	Delta
03 Jan - 09 Jan	British Airways

Also check the deals for one-way flights from Washington to Singapore in January.

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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Cheapest return flights from Washington to Singapore in January from 777€

Return flights