For the cheapest flights to Lisboa Portela book 2 days before departure.
The most popular airlines on the route Oslo Gardermoen - Lisboa Portela: Brussels Airlines (SN), TAP Air Portugal (TP), British Airways (BA).
Direct flights last about 4h 5min.
Direct flights available 4 days a week - Monday, Tuesday, Thursday, Saturday.
Direct flights: TAP Air Portugal (TP), Norwegian Air Shuttle (DY).