Flying out of Billy Bishop is extremely handy as a downtown-er!
Once for work I was put on a flight to Ottawa 1.5 hours before it took off, and I got there on time, AND I didn't feel at all rushed. This sounds ridiculous, but anyone else who has flown off the island knows what I'm talking about.
The Porter lounge is great with the free espresso, water, juice and snacks. I always stock up on their cute little water bottles and take advantage of their free wifi while I wait for my flight. The wifi helps the wait time go by even quicker than it already is -- that's right, folks, you only have to be here for a domestic flight 30 minutes. WORD!
TRAVEL TIPS: The ferry to the airport is FREE and runs every 15 minutes. Remember to factor this in to your very short airport stay.