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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. There are probably other cities without outrageously good deals at the moment.

The two main places to search are ITA Matrix and Search both for your city. Search on ITA Matrix by calendar of lowest fares for acceptable trip lengths.

Baltimore to Cancun has $228 roundtrips.

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Boston to Cancun has $365 roundtrips.Screen Shot 2015-07-22 at 4.39.22 PM

Dallas to Cancun has $278 roundtrips.Screen Shot 2015-07-22 at 4.42.01 PM

Cleveland to Cancun has $280 roundtrips.

Screen Shot 2015-07-22 at 4.42.41 PM

The cheapest roundtrips I found were from Atlanta on direct flights. Southwest has $99 outbounds from September to December 2015.

Screen Shot 2015-07-22 at 4.35.27 PM Screen Shot 2015-07-22 at 4.35.51 PM

Returns in the same months start at $115.Screen Shot 2015-07-22 at 4.36.02 PM

The total is $213, and you get two free checked bags both directions.Screen Shot 2015-07-22 at 4.36.33 PMAfter searching on ITA Matrix and, book with the cheapest carrier. Keep in mind what baggage fees are, especially if you book with Frontier and Spirit, which charge for carry ons.

Best Way to Buy the Ticket

Buy with the Citi Prestige® Card. The first $250 in flights per calendar year are refunded to you as a statement credit. This includes fees like the checked bag fee, seat reservation, or meals that you purchase at the time of ticketing or later. After the statement credit, your roundtrip ticket from Atlanta or Baltimore would be free.

If you’ve already maxed out the statement credit, you will still earn 3x ThankYou Points on the award taxes. The Citi Prestige® Card also comes with a 40,000 ThankYou Point sign up bonus.

Hat Tip Airfare Watchdog