Depending On The Ticket Class And Seat Availability, Delta Air Lines Offers A Variety Of Alternatives For Seat Upgrades. Additional Legroom, A Designated Overhead Bin, And Priority Boarding Are All Features Of The Delta Comfort Upgrade. Delta Seat Upgrade  Depending On Availability, Delta Medallion Members Can Receive Free Promotions To Delta Comfort Seats; For Everyone Else, Upgrades Must Be Purchased At The Time Of Booking Or At The Airport.

On Some Domestic And International Flights, Seats Are Available With The Delta One Upgrade, Which Comes With Lie-Flat Beds, Fine Dining, And Other Perks. Subject To Space, Delta Medallion Members Are Eligible For Complimentary Upgrades To Delta One. At The Same Time, Everyone Else Must Purchase An Upgrade Either At The Time Of Booking Or At The Airport.

Paid Upgrade: Travellers May Upgrade To A Better Tier Of Service By Paying A Fee When Making A Reservation Or At The Airport, Consider Options Like Delta Comfort Or Delta One. Same-Day Upgrade: Subject To Availability And A Surcharge, Passengers With Qualifying Fares May Request A Same-Day Upgrade To A Better Class Of Service On The Day Of Departure. It's Vital To Be Aware That Depending On The Flight Route, Ticket Class, And Status In The Delta Skymiles Program, Delta's Seat Upgrade Policies And Availability May Change.