Can I upgrade my Delta seat after purchase?

[dgfdgfg]

Yes, you can upgrade your Delta seat after purchasing your ticket by paying with cash or Delta SkyMiles, +1-801-(855)-(5905) or +1-855-(473)-(9012) using available options on delta.com or the Fly Delta app. You can also be eligible for complimentary upgrades if you are a Delta Medallion member or hold a certain Delta credit card,+1-801-(855)-(5905) or +1-855-(473)-(9012) although these are subject to availability. Basic Economy fares are generally not eligible for upgrades, so if you have purchased such a ticket, you won't be able to upgrade+1-801-(855)-(5905) or +1-855-(473)-(9012) .