Delta Air Lines has quietly expanded Delta One service to one of its most important domestic routes: Los Angeles – Atlanta. I somehow missed this development when it was first reported months ago, then discovered it by accident when noticing my digital boarding pass was purple instead of red. Delta One Now Operates On Widebody Flights Between Los Angeles And Atlanta Delta Air Lines began marketing select widebody flights between Los Angeles (LAX) and Atlanta (ATL) as Delta One on March 29, 2026. This is not a new route and not a new aircraft deployment, but rather a rebranding and soft-product upgrade for the widebody flights Delta already operates between these two hubs. As One Mile at a Time noted last December, Delta had planned to shift the forward cabin on widebody LAX – ATL flights from domestic first class to Delta One as of March 29.…