Frontier Airlines Classic Plus STRETCH seat

Frontier Airlines offers a choice of three different fare levels: Classic Plus, Classic or Economy, with varying levels of niceties.
The Classic Plus ticket is fully refundable, changeable, and provides the customer the ability to confirm a seat on a different flight the same day of travel for no charge. In addition, Classic Plus customers get priority boarding, two checked bags, free DIRECTV®, an in-flight snack and a premium beverage. Classic Plus customers also receive a 150% mileage credit in EarlyReturns®, the company's customer loyalty program.
Classic Plus passengers are eligible for a STRETCH seat at the time of purchase if available. Classic and Economy passengers may purchase a STRETCH seat at the time of check-in if available. To take advantage of the Classic fare pricing, you must purchase the STRETCH upgrade prior to boarding. If purchased onboard the aircraft, Classic passengers must pay the applicable Economy upgrade fee.

Classic offers the important comforts for the best overall value. For as little as $20 more than an Economy fare the Classic customer gets advanced seat assignments, two complimentary checked bags and DIRECTV®, and 125% EarlyReturns® mileage credit. In addition, they will be charged only a $50 fee for itinerary changes and $75 for same day confirmed changes.

Economy is the basic ticket to ride. The Economy ticket is for the customer who is traveling light and doesn't foresee any schedule changes. The Economy ticket is our guaranteed lowest fare.

Frontier's EarlyReturns® Ascent and Summit members will receive some added benefits with AirFairs as well.
No matter what fare-type an Ascent or Summit member purchases, the benefits tied to their membership level will always override the attributes of the fare.
Members who purchase a Classic Plus or Classic fare have the ability to accumulate up to 200 percent EarlyReturns miles.
Anyone redeeming an EarlyReturns award ticket, on or after December 18, 2008, will automatically receive an upgraded Classic fare, which will include two checked bags and complimentary DIRECTV®.
Beginning January 1, 2009, Summit companions traveling on the same itinerary will also receive two complimentary checked bags and the same waived fee benefits as the Summit member.