AirHint found the following cheapest return flights from Sydney (SYD) to Tongatapu (TBU) in October 2025 (see full year).
Return flights
| 21 Oct - 28 Oct | Qantas | direct | |
| 21 Oct - 25 Nov | Qantas | direct | |
| 31 Oct - 04 Nov | Fiji Airways | ||
| 28 Oct - 01 Nov | Qantas | direct | |
| 28 Oct - 04 Nov | Qantas | direct | |
| 22 Oct - 29 Oct | Fiji Airways |
Also check the deals for one-way flights from Sydney to Tongatapu in October.
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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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