I have heard that porter may mark up prices before their 50% off sale, but that being said it is still the cheapest deal around by far. I live in Chicago now, and I always fly with porter when going back to Montreal, or when visiting my brother. I'm sure they do it for a reason, but it is annoying that you have to fly always via Toronto to get to any destination. The thing is though, if I had to layover somewhere, porters lounge is amazing, with free snacks, coffee, and wifi. It really is an amazing airline, I just wish they had more direct flights!