Cheapest return flights from Lisbon to Sydney in September from $1226
AirHint found the following cheapest return flights from Lisbon (LIS) to Sydney (SYD) in September 2025 (see full year).
Return flights
| 15 Sep - 26 Sep | Ryanair | ||
| 30 Sep - 15 Oct | Qatar Airways | ||
| 05 Sep - 14 Sep | Qatar Airways | ||
| 23 Sep - 04 Oct | British Airways | ||
| 06 Sep - 20 Sep | British Airways |
Also check the deals for one-way flights from Lisbon to Sydney in September.
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.
