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

Return flights

01 Apr - 09 Apr	Air China
15 Apr - 18 Apr	Air China
24 Apr - 26 Apr	Air China
01 Apr - 21 Apr	Air China
08 Apr - 20 Apr	Asiana Airlines
01 Apr - 30 Apr	ANA
08 Apr - 23 Apr	Air China
29 Apr - 05 May	Air China
08 Apr - 17 Apr	Asiana Airlines
21 Apr - 24 Apr	Asiana Airlines
03 Apr - 12 Apr	Air China
24 Apr - 05 May	Air China
29 Apr - 07 May	Air China
30 Apr - 13 May	Asiana Airlines
27 Apr - 06 May	Asiana Airlines
30 Apr - 10 May	Asiana Airlines
30 Apr - 07 May	Asiana Airlines
24 Apr - 03 May	Air China
24 Apr - 09 May	Asiana Airlines
30 Apr - 12 May	ANA

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 568€

Return flights