Delta First Class: What's the difference? Delta One and Delta First Class are the most premium cabin options on Delta flights. Although “first class” usually denotes the best an airline has to offer, that isn't so with Delta Air Lines, which dubbed its top-of-the-line fare class “Delta One.”
You'll have room to stretch out, an outlet to stay powered up and, of course, the signature service of a Delta flight attendant for the First Class cabin. Stretch out with up to 8 inches extra legroom compared to a Main Cabin seat, and up to a 5.4-inch recline.Also enjoy an 11-inch seatback screen on many routes.
Delta offers six tiers of onboard service: Basic Economy, Main Cabin, Delta Comfort +, First Class, Delta Premium Select and Delta One. Delta seat selection is available to all passengers, with the exception of those flying its cheapest airfare, Basic Economy.
Delta One is Delta's flat-bed premium product that is offered on long-haul international flights and some domestic transcontinental flights. First Class is Delta's premium product on domestic and short-haul international flights; seats are not flat-bed.
Technically, first class and Delta One are separate fare classes, but — confusingly — Delta One is technically a business class fare. Still, it offers what most people associate with a “first class” ticket, including lie-flat seats and premium food.
Fare class W is a revenue fare/booking class that is marketed as Delta Comfort+ on Delta Air Lines mainline and code share flights. A ticket booked in the W fare class will be supported by a main cabin fare basis code to provide upgrade rankings for the ticket.