Cheapest return flights from San Francisco to Sydney in April from $812

Best time to book flights for San Francisco (SFO) to Sydney (SYD) flights at AirHint

AirHint found the following cheapest return flights from San Francisco (SFO) to Sydney (SYD) in April 2025 (see full year).

Return flights

29 Apr - 13 May Frontier Airlines
29 Apr - 06 May Frontier Airlines
09 Apr - 24 Apr Hawaiian Airlines
02 Apr - 24 Apr Alaska Airlines
16 Apr - 28 Apr Hawaiian Airlines
01 Apr - 10 Apr Hawaiian Airlines
10 Apr - 19 Apr Hawaiian Airlines
03 Apr - 10 Apr Hawaiian Airlines
15 Apr - 29 Apr Hawaiian Airlines
01 Apr - 20 Apr Alaska Airlines
08 Apr - 28 Apr Delta
18 Apr - 25 Apr Delta
30 Apr - 14 May Cathay Pacific
11 Apr - 10 May Hawaiian Airlines
29 Apr - 13 May United direct
24 Apr - 05 May American Airlines
26 Apr - 03 May Qantas
25 Apr - 02 May Cathay Pacific

Also check the deals for one-way flights from San Francisco to Sydney in April.

Skyscanner

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney