Cheapest one-way flights from Raleigh-durham to Lisbon in December from $345

AirHint found the following cheapest one-way flights from Raleigh-durham (RDU) to Lisbon (LIS) in December 2025 (see full year).

One-Way flights

11 Dec Frontier Airlines
15 Dec Frontier Airlines

Also check the deals for return flights from Raleigh-durham to Lisbon in December.

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