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

Return flights

10 Dec - 17 Dec	Frontier Airlines
09 Dec - 22 Jan	Qantas
02 Dec - 09 Dec	Qantas
02 Dec - 18 Dec	Qantas
28 Dec - 21 Jan	Frontier Airlines
28 Dec - 27 Jan	Frontier Airlines
28 Dec - 11 Jan	Frontier Airlines
25 Dec - 21 Jan	Spirit Airlines
27 Dec - 11 Jan	Delta
12 Dec - 06 Jan	Qantas
25 Dec - 08 Jan	Qantas
28 Dec - 21 Jan	Qantas	direct
23 Dec - 30 Dec	Spirit Airlines
12 Dec - 06 Jan	Qantas	direct
28 Dec - 31 Dec	Air New Zealand

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

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 December from $1024

Return flights