AirHint found the following cheapest one-way flights from Helsinki (HEL) to Lisbon (LIS) in May 2026 (see full year).
One-Way flights
| 12 May | Ryanair | ||
| 08 May | airBaltic | ||
| 12 May | Finnair | direct | |
| 08 May | Finnair | direct | |
| 15 May | Finnair | direct |
Also check the deals for return flights from Helsinki to Lisbon in May.
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