Amazingly cheap flights across the USA from only $14 roundtrip!! For example, fly from Atlanta to Tampa for only $14 one-way.
Non-stop flights from San Diego to El Paso, Texas for only $106 roundtrip with Alaska Airlines. Also works in reverse.
Non-stop summer flights from Chicago to El Paso, Texas for only $116 roundtrip with American Airlines. Also works in reverse.
Summer flights from US cities to Merida, Mexico for only $234 roundtrip with United Airlines.