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

Return flights

23 Apr - 30 Apr	Scoot
28 Apr - 21 May	Scoot
27 Apr - 18 May	Scoot
25 Apr - 03 May	Scoot
19 Apr - 06 May	Scoot
18 Apr - 10 May	Scoot
18 Apr - 16 May	Scoot
19 Apr - 07 May	Scoot
23 Apr - 11 May	Scoot
15 Apr - 06 May	Scoot
21 Apr - 23 May	Scoot
04 Apr - 22 Apr	Hainan Airlines
15 Apr - 22 Apr	Scoot
20 Apr - 27 Apr	Scoot
22 Apr - 27 Apr	Scoot
22 Apr - 23 Apr	Scoot
18 Apr - 26 Apr	Scoot
19 Apr - 26 Apr	Scoot
14 Apr - 22 Apr	Scoot
14 Apr - 23 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 $335

Return flights