Cheapest return flights from Salt Lake City to Sydney in December from $1633

AirHint found the following cheapest return flights from Salt Lake City (SLC) to Sydney (SYD) in December 2025 (see full year).

Return flights

22 Dec - 29 Dec Frontier Airlines
12 Dec - 06 Jan Alaska Airlines
25 Dec - 01 Jan Frontier Airlines
27 Dec - 04 Jan Frontier Airlines
06 Dec - 20 Dec United
13 Dec - 06 Jan Frontier Airlines
13 Dec - 02 Jan Frontier Airlines
31 Dec - 01 Jan Alaska Airlines

Also check the deals for one-way flights from Salt Lake City to Sydney in December.

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