In 1990, when I was tasked by United Airlines to help build a product to allow consumers to book their travel online, no one in the airline's management believed that paper tickets could disappear.

Image: Travel agencies are setting air ticket sales records. (Photo Credit: REDPIXEL / Adobe Stock) by Mia Taylor Last updated: 4:45 PM ET, Mon March 25, 2024. February air ticket sales totaled a ...