Cheapest return flights from Houston to Sydney in September from $972

AirHint found the following cheapest return flights from Houston (HOU) to Sydney (SYD) in September 2025 (see full year).

Return flights

27 Sep - 01 Oct Spirit Airlines
24 Sep - 08 Oct Spirit Airlines
16 Sep - 07 Oct Fiji Airways
09 Sep - 23 Sep Spirit Airlines
08 Sep - 15 Sep Frontier Airlines
10 Sep - 28 Sep Spirit Airlines
06 Sep - 12 Oct Air Canada
09 Sep - 16 Sep Air Canada
13 Sep - 22 Sep Air Canada
11 Sep - 27 Sep Frontier Airlines

Also check the deals for one-way flights from Houston to Sydney in September.

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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