Cheapest return flights from Raleigh-durham to Lisbon in September from 792€
AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Lisbon (LIS) in September 2025 (see full year).
Return flights
| 30 Sep - 07 Oct | United | ||
| 20 Sep - 27 Sep | United | ||
| 10 Sep - 17 Sep | United | ||
| 10 Sep - 20 Sep | 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.
