How to Fly Delta One Lie-Flat Seats on Domestic Routes in August 2025

Delta mostly uses its internationally-configured aircraft, well, on international flights. However, during August 2025, Delta has scheduled widebody aircraft with lay-flat business class seats on 1,719 domestic U.S. flights. That's an average of around 55 flights a day! In this article, we list out (and map) all 38 routes and the exact flights where you'll find these aircraft flying within the U.S. Plus, we'll show you the best ways to book these flights with points and miles.