Cheapest one-way flights from San Francisco (SFO) to Sydney (SYD), December

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
10 Dec Alaska Airlines
22 Dec Frontier Airlines
23 Dec Frontier Airlines
01 Dec United
Direct Flight
21 Dec Frontier Airlines
10 Dec United
Direct Flight
16 Dec FrenchBee
11 Dec United
Direct Flight
23 Dec United
Direct Flight
18 Dec Frontier Airlines
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deals for return flights from San Francisco to Sydney in December.

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Updated Jul 18, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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