AirHint found the following cheapest return flights from Sydney (SYD) to Vientiane (VTE) in August 2025 (see full year).

Return flights

16 Aug - 23 Aug	Scoot Tigerair
15 Aug - 05 Sep	Scoot Tigerair
07 Aug - 11 Aug	Jetstar
15 Aug - 28 Aug	AirAsia X
22 Aug - 28 Aug	AirAsia X
08 Aug - 08 Sep	China Southern
10 Aug - 28 Aug	China Southern
18 Aug - 01 Sep	China Southern
08 Aug - 28 Aug	AirAsia X
08 Aug - 16 Aug	AirAsia X
20 Aug - 28 Aug	AirAsia X
15 Aug - 23 Aug	AirAsia X
08 Aug - 12 Aug	AirAsia X

Also check the deals for one-way flights from Sydney to Vientiane in August.

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.

Book a cheap hotel in Vientiane

Cheap car rent in Vientiane

Cheapest return flights from Sydney to Vientiane in August from 357€

Return flights