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

Return flights

04 Dec - 08 Dec	Scoot
10 Dec - 22 Dec	Scoot
09 Dec - 15 Dec	Scoot
08 Dec - 14 Dec	Scoot
09 Dec - 14 Dec	Scoot
28 Dec - 30 Dec	Scoot
31 Dec - 11 Jan	Scoot
21 Dec - 30 Dec	Scoot
21 Dec - 31 Dec	Scoot
19 Dec - 30 Dec	Scoot
19 Dec - 27 Dec	Scoot
14 Dec - 04 Jan	Scoot
30 Dec - 11 Jan	Scoot
25 Dec - 24 Jan	Scoot
27 Dec - 16 Jan	China Southern
27 Dec - 10 Jan	China Southern
23 Dec - 18 Jan	China Southern
18 Dec - 11 Jan	Scoot
19 Dec - 15 Jan	Scoot
20 Dec - 08 Jan	Scoot

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

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 Vientiane in December from 580€

Return flights