Cheapest return flights from Raleigh-durham to Lisbon in May from $840
AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Lisbon (LIS) in May 2025 (see full year).
Return flights
| 12 May - 22 May | Frontier Airlines | ||
| 12 May - 21 May | Frontier Airlines | ||
| 14 May - 21 May | Frontier Airlines | ||
| 27 May - 02 Jun | Frontier Airlines | ||
| 30 May - 06 Jun | United | ||
| 23 May - 08 Jun | Air Canada |
Also check the deals for one-way flights from Raleigh-durham to Lisbon in May.
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.
