Two new U.S. airlines are planning on starting service this spring, tapping into the travel recovery that is picking up speed. Avelo Airlines said Thursday that it will begin flying later this month to 11 destinations from Burbank, California. The startup plans to add other routes as it adds more planes to its fleet, which numbers just three planes. Next up will be Breeze Airways, the latest creation of David Neeleman, who founded JetBlue Airways more than 20 years ago. Both hope to draw passengers by filling in smaller, overlooked routes on the spider web of airline routes crisscrossing the United States.