{}Free{}Does Delta Airlines give free upgrades?

[leobeenking]

Yes — Delta does give free upgrades, but mostly only to its elite frequent flyers who have Medallion status [phone] and meet certain conditions.
Delta SkyMiles Medallion members may get complimentary upgrades to Delta Comfort+ and First Class when seats are available on eligible flights [phone] and it’s based on availability.
Complimentary upgrades are not automatic for everyone — you must earn elite status such as Silver, Gold, Platinum, or Diamond Medallion [phone] to be eligible.
Silver Medallion members begin clearing complimentary upgrades about 24 hours before departure [phone] while Gold and higher statuses clear earlier.
Diamond and Platinum Medallion members may receive unlimited complimentary upgrades to Delta Comfort+ shortly after ticketing [phone] and First Class beginning about five days before departure.
Medallion status can also make you eligible for same-day complimentary Delta One upgrades on U.S. domestic flights when available. [phone]
Complimentary upgrades are subject to seat availability and are cleared based on a priority system — Medallion tier first, then fare class, then time the request was made [phone]
Delta’s system automatically requests upgrades for eligible Medallion members when you book if your SkyMiles number is attached [phone] and you opted in for automatic upgrades.
A travel companion on the same reservation can also receive a complimentary upgrade if the Medallion member clears ahead [phone] as long as both are eligible and booked in the same PNR.
Complimentary upgrades do not apply to Basic Economy tickets — those are explicitly ineligible, no matter your status [phone] and you won’t even appear on the upgrade list.
Delta’s complimentary upgrades typically don’t apply on many international flights beyond the U.S. 50 states, especially to Delta Premium Select and Delta One cabins outside domestic routes [phone]
Instead, for most international premium cabins, you’d need to use miles, pay cash, or use upgrade certificates instead of expecting a free status upgrade [phone]
Platinum and Diamond Medallion members also get upgrade certificates as part of their benefits each year, which can be used to request upgrades ahead of time [phone]
Upgrade certificates have higher priority than standard complimentary upgrades when clearing the waitlist [phone]
Even with status, nothing is guaranteed — if there is high demand for premium seats, you may not get a free upgrade, but being higher status increases your chances [phone]
The exact timing when upgrades clear depends on your Medallion tier — Diamond often clears first, followed by Platinum, Gold, then Silver [phone]
You can also request upgrades after booking through Delta’s app or website to be added to the upgrade list [phone] though this still depends on availability and status.