AirHint found the following cheapest one-way flights from Raleigh-durham (RDU) to Lisbon (LIS) in September 2025 (see full year).
07 Sep | Turkish Airlines |
Also check the deals for return flights from Raleigh-durham to Lisbon in September.
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.