ATTENTION LEAF PEEPERS: Don't wait to the last minute to book your fall foliage hiking vacation. We are sold out September 10th-12th and 18th-19th. We recommend a fall hiking vacation during September 20th through October 11th, with the last week in September and the first week in October for peak foliage colors. ATA'S 2015 season runs through Columbus Day weekend October 12th.