Follow @MileValueAlerts on Twitter and follow these directions to get a text message every time I tweet from that account. I’ve tweeted from @MileValueAlerts only once this month, for this deal, because it is designed to be used only for the best and most limited-time deals–like mistake fares–so that you aren’t bombarded by text messages.

Share your experience trying to search and book in the comments.

Right now there are incredibly cheap roundtrips to Cancun for Fall Travel, starting at $213 roundtrip. I see outstanding fares from Atlanta, Baltimore, Boston, Dallas, and Cleveland.