AirHint found the following cheapest return flights from Seoul (GMP) to Sydney (SYD) in April 2026 (see full year).

Return flights

01 Apr - 29 Apr	ANA
01 Apr - 15 Apr	Jeju Air
01 Apr - 30 Apr	ANA
20 Apr - 23 Apr	Air China
04 Apr - 05 Apr	Air China
04 Apr - 11 Apr	Air China
03 Apr - 11 Apr	Air China
03 Apr - 12 Apr	Air China
15 Apr - 18 Apr	Air China
18 Apr - 25 Apr	Air China
24 Apr - 05 May	Air China
27 Apr - 05 May	Air China
27 Apr - 21 May	Air China
29 Apr - 07 May	EVA Air
29 Apr - 05 May	Air China
29 Apr - 09 May	Air China
24 Apr - 03 May	Air China
27 Apr - 03 May	Air China
29 Apr - 10 May	Air China
29 Apr - 03 May	Air China

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

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 Seoul to Sydney in April from 537€

Return flights