AirHint found the following cheapest one-way flights from Austin (AUS) to Lisbon (LIS) in April 2026 (see full year).
One-Way flights
| 18 Apr | Spirit Airlines | ||
| 07 Apr | Frontier Airlines | ||
| 13 Apr | Aer Lingus | ||
| 25 Apr | United | ||
| 20 Apr | Delta | ||
| 21 Apr | United | ||
| 22 Apr | United | ||
| 27 Apr | Delta | ||
| 29 Apr | United | ||
| 17 Apr | Air Canada |
Also check the deals for return flights from Austin to Lisbon in April.
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