Most major airlines have special deep discounts on airfare that a lot of people are not aware of for themselves. The really low fares are the stand by tickets. Some of the disadvantages are that you might get on the flight you hope to and it might be all booked so you don't. Another disadvantage is that you cannot pick your seat. One other disadvantage is that you might not get a meal, snack or other food offered to everyone else. The really great fares are for the people willing to withstand those bad points for the excellent price of their tickets. Ask before you book your next flight if you can use a stand by fare. I do this all the time and thought I would tell those who don't know about this.