A deposition is one of several devices used in the discovery phase of litigation. It consists of one or more attorneys questioning a witness, under oath, with a stenographer who records the testimony. A judge is not present.
As of publication United, Delta and American Airlines charge $125 for flights in the United States and most international flights in North America; Spirit Airlines charges $100 for domestic flights; Southwest requires payment of $75 for each in-cabin pet; and AirTran's pet fee is $69.
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.