Fares are available only on www.southwest.com and can be purchased today through March 14, 2013, at 11:59 p.m. for the respective time zone of the originating city. Travel must take place between March 19, 2013, and Oct. 30, 2013. Fares require a 10-day advance purchase and are available for travel on Tuesday and Wednesday. Travel not available to/from Boston, Providence, and Manchester on April 16, 2013. Service to Branson, MO, begins March 9, 2013. Service to Flint, MI; Portland, ME; Rochester, NY; Charlotte, NC; and San Juan, Puerto Rico, begins April 14, 2013. Service to Wichita, KS begins June 2, 2013. Service to Grand Rapids, MI begins August 11, 2013. Lowest advertised fare not available to/from Dayton, OH; Washington Reagan National; Newark, NJ; Philadelphia, PA; Washington-Dulles; New York LaGuardia; West Palm Beach, FL; San Juan, Puerto Rico; Ft. Myers, FL; and Seattle, WA. Seats are limited. Fares may vary by destinations, flight, and day of week and won't be available on some flights that operate during very busy travel times and holiday periods. Connecting itinerates might be slightly higher due to government imposed taxes and fees. Fares are available for one-way travel. Fares may be combined with other Southwest combinable fares, except Senior Fares. When combining fares, the most restrictive fare rules apply. Fares are nonrefundable but may be applied, if unused, toward the purchase of future travel on Southwest Airlines. Fares are not available through the Group Desk. Any change in the itinerary may result in an increase in fare. Standby travel requires an upgrade to the Anytime fare. Fares are subject to change until ticketed. Fares are valid on published, scheduled service only. Government-imposed taxes and fees are now included in the advertised fare. To comply with new government regulations, all airlines must include government-imposed taxes and fees in advertised air fares.