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

Return flights

15 Nov - 18 Nov	Frontier Airlines
13 Nov - 20 Nov	Cathay Pacific
16 Nov - 22 Nov	Frontier Airlines
18 Nov - 23 Dec	Fiji Airways
30 Nov - 16 Dec	American Airlines
29 Nov - 16 Dec	American Airlines
28 Nov - 01 Dec	United
20 Nov - 30 Nov	Qantas

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

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 November from $1287

Return flights