AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Lisbon (LIS) in December 2024 (see full year).
29 Dec - 10 Jan | American Airlines | ||
01 Dec - 08 Dec | Air Canada | ||
02 Dec - 08 Dec | United | ||
26 Dec - 03 Jan | British Airways |
Also check the deals for one-way flights from Raleigh-durham to Lisbon in December.
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.