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Cheapest one-way flights from Sydney (SYD) to San Jose (SJO), December

7 dates in December, from $ 1,154. Book in one tap, or check whether to buy now or wait.

One-way Return

Dates, airline, and price
Dates	Airline	Price
8 Dec	Alaska Airlines
23 Dec	United
21 Dec	United

22 Dec	United
17 Dec	United
20 Dec	United
19 Dec	United

Cheapest deals for the full year

Deals for return flights from Sydney to San Jose in December.

Book a cheap hotel in San Jose

Cheap car rent in Juan Santamaria Intl

Updated Oct 11, 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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Cheapest one-way flights from Sydney (SYD) to San Jose (SJO), December

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