Cheapest return flights from Austin to Lisbon in September from $828
AirHint found the following cheapest return flights from Austin (AUS) to Lisbon (LIS) in September 2025 (see full year).
Return flights
| 16 Sep - 23 Sep | United | ||
| 17 Sep - 27 Sep | Air Canada | ||
| 01 Sep - 08 Sep | United | ||
| 11 Sep - 18 Sep | United | ||
| 21 Sep - 27 Sep | Spirit Airlines | ||
| 06 Sep - 13 Sep | United | ||
| 21 Sep - 28 Sep | United |
Also check the deals for one-way flights from Austin to Lisbon 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.
