Text Preview. A Fish with Whiskers. Many different kinds of catfish are found all over the world. They have adapted to the regions in which they live. Three catfish that have some similarities but definite differences are the electric catfish, the burrowing catfish and the walking catfish. These three catfish have many similarities.
Not all passengers, fares or flights are subject to the fee, but many economy travellers flying in North America who want to choose their seat in advance probably have to pay. It can also cost a lot: $10 to $47.20 for a return trip on WestJet; $20 to $80 for a return trip on Air Canada.
She and airline analysts say this is what's happening-- depending on the popularity of the flight, the seat map may not let you pick a coach seat at the time of purchase. But it will let you upgrade to a preferred seat or an economy plus seat with extra room. That can cost anywhere from $30-60.