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

Return flights

25 Apr - 25 May	Scoot
27 Apr - 23 May	Scoot
20 Apr - 06 May	Scoot
26 Apr - 30 Apr	Scoot
20 Apr - 27 Apr	Scoot
23 Apr - 27 Apr	Scoot
23 Apr - 20 May	Scoot
29 Apr - 14 May	AirAsia X
27 Apr - 01 May	Scoot
18 Apr - 30 Apr	AirAsia X
21 Apr - 30 Apr	AirAsia X
21 Apr - 28 Apr	AirAsia X
19 Apr - 29 Apr	AirAsia X
29 Apr - 06 May	AirAsia X
21 Apr - 05 May	AirAsia X
16 Apr - 16 May	Scoot
25 Apr - 03 May	Scoot
17 Apr - 29 Apr	Scoot
17 Apr - 26 Apr	Scoot
18 Apr - 29 Apr	Scoot

Also check the deals for one-way flights from Sydney to Bangkok 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 Sydney to Bangkok in April from 273€

Return flights