Frontline Airlines is an American flight carrier headquartered in Colorado. For your next flight with Frontier Airlines, use the following Seating Chart to make the best out of your flight. As shown in the Seating Chart below, the configuration on this aircraft is almost identical to the A319 in the Frontier fleet but has several other capacities. This aircraft features Frontier's Stretch seating which is the first four rows of the cabin. These rows provide an extra 5 inches of legroom and may be selected at the time of purchase or check-in. As the Frontier Airlines Seating Chart elaborates, stretch seating has increased legroom but remains an Economy class product.