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

Return flights

17 Apr - 24 Apr	Frontier Airlines
01 Apr - 19 Apr	Frontier Airlines
12 Apr - 24 Apr	Spirit Airlines
03 Apr - 13 Apr	Frontier Airlines
27 Apr - 24 May	United
15 Apr - 17 May	United
12 Apr - 15 May	United

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

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 April from $928

Return flights