Cheapest return flights from Raleigh-durham to Lisbon in September from 826€
AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Lisbon (LIS) in September 2025 (see full year).
Return flights
| 18 Sep - 25 Sep | United | ||
| 08 Sep - 15 Sep | United | ||
| 28 Sep - 05 Oct | United |
Also check the deals for one-way 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.
