Cheapest one-way flights from Houston to Sydney in December from $416

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

One-Way flights

10 Dec Qantas
01 Dec United direct
20 Dec Frontier Airlines
23 Dec United direct
10 Dec United direct
20 Dec United direct

Also check the deals for return flights from Houston to Sydney in December.

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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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