AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Sydney (SYD) in September 2025 (see full year).

Return flights

17 Sep - 23 Sep	Frontier Airlines
18 Sep - 25 Sep	Frontier Airlines
17 Sep - 23 Sep	Qantas	direct
18 Sep - 25 Sep	Qantas	direct

Also check the deals for one-way flights from Dallas-Fort Worth to Sydney in September.

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 Dallas-Fort Worth to Sydney in September from $1236

Return flights