cheap flights Perth

AirAsia is currently selling Perth to Ho Chi Minh City flights from just AUD $425 — and if you know when to click, you can lock in one of the cheapest fares out of Western Australia right now. This guide breaks down today’s live deals, the best booking strategy for low-season travel, and exactly what your money buys you on the ground in Saigon. Updated 26 May 2026.