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

Return flights

25 Jan - 06 Feb	Spirit Airlines
26 Jan - 06 Feb	Spirit Airlines
24 Jan - 07 Feb	Frontier Airlines
19 Jan - 16 Feb	Turkish Airlines
25 Jan - 17 Feb	United
26 Jan - 06 Feb	United	direct
25 Jan - 06 Feb	United	direct
24 Jan - 07 Feb	United	direct
22 Jan - 28 Jan	United	direct
02 Jan - 07 Jan	Air New Zealand

Also check the deals for one-way flights from Houston 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 Houston to Sydney in January from $807

Return flights