What happens if a fare goes down after somone buys a ticket? The time-space continuum will be breached with disastrous consequences for humanity.
Seriously, nothing about from your cursing yourself for booking when you did unless you booked a cancellable ticket, in which case you can cancel and buy anew.
Originally Posted by
djk7
Some airlines will actually give you a credit for the difference, some will but minus a change fee that pretty much negates the credit.
That is common among US airlines but pretty much unknown among European ones.