Great sale fare$400one-way
Typical low fare$550–$750one-way
Which airlines fly it cheapest
Jetstar (seasonal nonstop), Fiji Airways via Nadi, Qantas/Delta/United sale fares.
The local trick
💡 Jetstar flash sales dip to ~$349 one-way. Fiji Airways via Nadi is reliably the cheapest full-service option and the stopover in Fiji is free.
Corridor intel — California ↔ Australia
Cheapest months: April–May and August–September (Australian shoulder seasons). Track Jetstar's transpacific sales and Qantas' 2–3 annual sales; Fiji Airways via Nadi is consistently the budget pick. Book 2–5 months out. If Southeast Asia is on your route anyway, price California → Bangkok/Kuala Lumpur too — flying the Pacific into Asia first is often $100–200 cheaper, and the Australia hop from Bali is tiny.