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

Return flights

18 Jan - 01 Feb	United
12 Jan - 25 Jan	Hawaiian Airlines
11 Jan - 18 Jan	Air Canada
23 Jan - 28 Jan	Turkish Airlines
01 Jan - 19 Jan	United
01 Jan - 15 Jan	United
09 Jan - 19 Jan	United
14 Jan - 22 Jan	Emirates

Also check the deals for one-way flights from Washington to Sydney 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 Sydney in January from 1040€

Return flights