Cheapest one-way flights from Washington to Singapore in July from $743

Best time to book flights for Washington (DCA) to Singapore (SIN) flights at AirHint

AirHint found the following cheapest one-way flights from Washington (DCA) to Singapore (SIN) in July 2025 (see full year).

One-Way flights

25 Jul United

Also check the deals for return flights from Washington to Singapore in July.

Skyscanner

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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