Cheapest return flights from Washington to Sydney in June from $954

Best time to book flights for Washington (IAD) to Sydney (SYD) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to Sydney (SYD) in June 2025 (see full year).

Return flights

04 Jun - 11 Jun Delta
13 Jun - 29 Jun Alaska Airlines

Also check the deals for one-way flights from Washington to Sydney in June.

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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