AirHint found the following cheapest one-way flights from Lisbon (LIS) to Oslo (OSL) in April 2026 (see full year).
One-Way flights
| 29 Apr | Norwegian | direct | |
| 21 Apr | Vueling Airlines | ||
| 17 Apr | Vueling Airlines | ||
| 21 Apr | TAP | direct | |
| 12 Apr | Norwegian Air Sweden AOC |
Also check the deals for return flights from Lisbon to Oslo in April.
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