AirHint found the following cheapest one-way flights from Dublin (DUB) to Lisbon (LIS) in September 2026 (see full year).
One-Way flights
| 21 Sep | Ryanair | direct | |
| 25 Sep | TAP | direct | |
| 23 Sep | Vueling Airlines | ||
| 23 Sep | Ryanair | direct |
Also check the deals for return flights from Dublin to Lisbon in September.
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