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

Return flights

27 May - 03 Jun	ANA
20 May - 28 May	Air China
08 May - 16 May	Air China
20 May - 27 May	ANA
18 May - 27 May	ANA
17 May - 27 May	ANA
19 May - 27 May	ANA
25 May - 27 May	ANA
06 May - 14 May	Air China
13 May - 21 May	Air China
27 May - 04 Jun	Air China
18 May - 24 May	Air China
30 May - 06 Jun	Air China
11 May - 08 Jun	ANA
29 May - 07 Jun	Air China
31 May - 06 Jun	ANA
30 May - 03 Jun	ANA
29 May - 03 Jun	ANA
29 May - 05 Jun	ANA

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

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 May from 541€

Return flights