AirHint found the following cheapest one-way flights from Lisbon (LIS) to Riga (RIX) in September 2026 (see full year).
One-Way flights
| 07 Sep | Ryanair | ||
| 12 Sep | Scandinavian Airlines | ||
| 08 Sep | TAP | ||
| 05 Sep | Ryanair | ||
| 14 Sep | TAP | ||
| 13 Sep | easyJet | ||
| 05 Sep | airBaltic | direct | |
| 07 Sep | airBaltic | direct | |
| 12 Sep | airBaltic | direct | |
| 14 Sep | airBaltic | direct |
Also check the deals for return flights from Lisbon to Riga in September.
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