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

Return flights

05 Nov - 11 Nov	Delta
02 Nov - 11 Nov	Delta
02 Nov - 16 Nov	Delta
02 Nov - 05 Nov	Delta
05 Nov - 16 Nov	Delta
24 Nov - 03 Dec	Delta
15 Nov - 18 Nov	Delta
13 Nov - 18 Nov	Delta
01 Nov - 07 Nov	Delta
06 Nov - 13 Nov	Delta
24 Nov - 02 Dec	Delta
20 Nov - 02 Dec	Frontier Airlines
08 Nov - 15 Nov	Etihad Airways
20 Nov - 01 Dec	Frontier Airlines
30 Nov - 16 Dec	Turkish Airlines
19 Nov - 02 Dec	Turkish Airlines
29 Nov - 16 Dec	IndiGo
28 Nov - 01 Dec	Sun Country Airlines
25 Nov - 02 Dec	Emirates
05 Nov - 18 Dec	United

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 734€

Return flights