Cheapest return flights from Houston to Sydney in December from $1120

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

Return flights

02 Dec - 20 Dec Air New Zealand
12 Dec - 22 Dec Air Canada
31 Dec - 11 Jan Turkish Airlines
31 Dec - 10 Jan Air New Zealand
24 Dec - 06 Jan Air New Zealand
24 Dec - 06 Jan United direct
31 Dec - 11 Jan United direct
02 Dec - 20 Dec United direct
31 Dec - 10 Jan United direct
17 Dec - 05 Jan Air New Zealand
16 Dec - 05 Jan Air New Zealand
18 Dec - 08 Jan American Airlines
15 Dec - 06 Jan Delta

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

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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