AirHint found the following cheapest one-way flights from Lisbon (LIS) to London (STN) in September 2026 (see full year).
One-Way flights
| 25 Sep | Ryanair | direct | |
| 30 Sep | Ryanair | direct | |
| 08 Sep | TAP | ||
| 10 Sep | TAP | ||
| 09 Sep | TAP | ||
| 19 Sep | Ryanair | direct | |
| 09 Sep | Ryanair | direct | |
| 05 Sep | Transavia France | ||
| 28 Sep | Air Europa | ||
| 03 Sep | TAP |
Also check the deals for return flights from Lisbon to London in September.
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