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.
For domestic flights, the average difference between buying a ticket on the best possible day to buy and the worst was $312! The smooth graph that you see above which is based on averages for all markets, would have a lot more spikes and valleys if it were drawn for just one trip, like we did here.