Cheapest return flights from Portland to Lisbon in May from $980
AirHint found the following cheapest return flights from Portland (PDX) to Lisbon (LIS) in May 2025 (see full year).
Return flights
| 05 May - 29 May | Spirit Airlines | ||
| 05 May - 30 May | Finnair | ||
| 10 May - 16 May | Air France | ||
| 22 May - 07 Jun | Scandinavian Airlines |
Also check the deals for one-way flights from Portland to Lisbon in May.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
