One way flights to Caribbean, Bermuda, or Mexico from $29 on JetBlue for travel between July 14 and October 6, 2009.

Sample fares:
Fort Lauderdale, FL (FLL) to Nassau, BS (NAS): $29
New York, NY (JFK) to Cancun, Mexico (CUN): $86
Between Boston, MA (BOS) to Bermuda (Hamilton): $99
Washington, DC/Dulles (IAD) to San Juan, PR (SJU): $99

Book by Friday, June 26, 2009. [via Kayak]