Cheapest return flights from Houston to Sydney in December from $1346

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

Return flights

11 Dec - 18 Dec Spirit Airlines
28 Dec - 11 Jan Air New Zealand
12 Dec - 19 Dec Spirit Airlines
11 Dec - 18 Dec United direct
25 Dec - 09 Jan United direct
24 Dec - 04 Jan Spirit Airlines
17 Dec - 21 Dec Air Canada
17 Dec - 08 Jan Air Canada
24 Dec - 04 Jan United direct
19 Dec - 04 Jan Spirit Airlines
19 Dec - 03 Jan United
20 Dec - 08 Jan United

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

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