Porter Airlines wants to expand service to cities like Vancouver, Los Angeles and Miami with new Bombardier CSeries 100 jets, but whether the plan can actually get off the ground will require significant political support.

That’s because the existing agreement that governs the Toronto island airport, where Porter’s operations are centred, would need to be amended to permit jets to land there. As well, the runway would need to be extended by 168 metres on either side into the lake, lengthening the runway to more than 5,000 feet.