Porter Airlines is considering the expansion of its New Brunswick service next year, but it hasn't decided whether new flights would land in Saint John, Fredericton or Moncton.

Toronto-based Porter Airlines may also expand into three Ontario cities. (CBC)

Porter, which is known for low fares, free snacks and flights to downtown Toronto, started service to Moncton in the summer and company officials say it's been successful.

However, expansion isn't guaranteed.

The airline could beef up its Moncton service without moving into the other two cities, and company spokesman Brad Cicero said three Ontario cities — Windsor, Sault Ste. Marie and Timmins — are also being considered.

Bernie LeBlanc, president and CEO of the Saint John Airport, believes Port City is a strong contender for the Toronto-based airline.

"We have very heavy corporate traffic to centres like Toronto, Montreal, Ottawa as well as the U.S., so I think that's a real benefit we have to offer," he said.

Porter began flying from Greater Moncton International Airport in late June. Two daily roundtrips to Toronto with a stop in Ottawa were available until Sept. 7.

The current off-season schedule includes four weekly flights.

It's unclear when Porter will make its expansion decision, but airport officials in Saint John say they're hoping to hear by February.