If you find a cheap fare on any website then come back to the site soon after to find the fare has risen it is probably because a cookie has been put on your computer by the airline telling them that you have visited the site recently and you are fair game.
Try removing the airlines cookie from your computer and try again.
There is a good chance the original cheaper fare will be offered again.
It won't always work but it is worth a go to save a few bob.
