With the airlines and airfares, there never seems to be any type of rhyme or reason as to their pricing. Sometimes, when you least expect it, they drop a couple hundred dollars from their usual fares. But oftentimes, the price only lasts for a few hours, or an afternoon. Then they're back to "normal" the next day.
IMHO, the best thing to do, is constantly monitor prices to/from the places that you travel. It helps if your travel dates are flexible, but if not, you've got to keep a watchful eye on the fares.
Buena Suerte,
MG
