How are Delta Upgrades Determined?
Delta prioritizes upgrades based on aspects like Medallion status, fare type, and seat availability. Higher-level Medallion members generally have the best chances for complimentary upgrades, specifically when they use their SkyMiles for an upgrade request. For those traveling in the lower- class, upgrades can still be available but are more dependent on seat availability. If you want to improve your options, consider using your miles to bid for an upgrade. Once you're eligible, you can request a Delta Seat Upgrade through Delta’s official website or mobile app.
Read more: https://www.airlinesgrouptravel.com/blog/how-to-upgrade-on-delta