The airline announced Gander and Houston, Texas as new destinations, as it rolled out its 2015 summer schedule in a Monday news release.
"Gander is a small but mighty town, now the third WestJet destination in the province, set to benefit from the growth of Newfoundland's offshore oil boom and the established business-traveller market between Alberta and 'The Rock,'" the release said.
The airline will operate two once-a-day flights through Gander: one from Toronto from May 3 to Oct. 24, and one from Halifax from July 15 to Oct. 24.
WestJet started flying to Gander in 2003 but later cut its service there in 2005, citing "market conditions," CBC News reported at the time.
If anything, the newly-revived service could breathe new life into a spectacular airport facility whose departures lounge looks like it's straight out of the 1960s.
The airport authority is, however, undergoing consultations about building a new terminal building.
Check out photos of Gander's retro airport right here: