AirHint found the following cheapest return flights from Portland (PDX) to Lisbon (LIS) in March 2025 (see full year).
22 Mar - 31 Mar | Virgin Atlantic |
Also check the deals for one-way flights from Portland to Lisbon in March.
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.