Delta SkyMiles gives members the ability to earn both Global Upgrade Certificates (GUCs) and Regional Upgrade Certificates (RUCs), which are the confirmed upgrade instruments that SkyMiles Diamond and Platinum Medallion members can select. In theory, being able to confirm an upgrade at the time of booking sounds exciting, though the reality is that there are a lot of restrictions when it comes to redeeming these.
In this post, I want to take a closer look at how they work — how do you earn Delta’s confirmed upgrade instruments, and how can they be redeemed?
How to earn Delta upgrade certificates
Delta SkyMiles offers the Choice Benefits program, whereby higher tier elite members can customize their rewards and select the elite perks that matter most to them, when passing certain Medallion Qualifying Dollar (MQD) thresholds (it’s fine if these are earned through credit card spending).
When earning SkyMiles Platinum Medallion status (which requires earning 15,000 MQDs in a calendar year), members can select the following as their Choice Benefits perk, among other things:
- Four Regional Upgrade Certificates
Then when earning SkyMiles Diamond Medallion status (which requires earning 28,000 MQDs in a calendar year), members can select any of the following three combinations as their Choice Benefits perk, among other things:
- Four Global Upgrade Certificates
- Eight Regional Upgrade Certificates
- Two Global Upgrade Certificates and four Regional Upgrade Certificates
In all cases, these upgrade benefits are valid through when your earned status expires. In other words, if you were to earn status in 2025, they’d be valid through January 31, 2027. That’s both the deadline by which you have to select them, and also the deadline by which you have to actually use them.
How Delta upgrade certificates can be redeemed
Delta really doesn’t make it very easy to understand how upgrade certificates can be redeemed, especially compared to American’s systemwide upgrades, for example. As a matter of fact, it’s kind of amazing that the average consumer is expected to understand this, because it’s quite nuanced.
So I’ll cover the details below, though to briefly summarize the distinction:
- Global Upgrade Certificates are available exclusively for SkyMiles Diamond Medallion members, and offer upgrades on both international and domestic flights with Delta, and select flights with Aeromexico, Air France, KLM, Korean Air, and Virgin Atlantic
- Regional Upgrade Certificates are available for SkyMiles Diamond and Platinum Medallion Members, and offer upgrades on the same routes as Medallion complimentary upgrades, including all flights with first class, domestic Delta Premium Select flights, and domestic Delta One flights
Let me also cover a couple more restrictions:
- These upgrades can be redeemed on both revenue and award tickets, with the exception of basic economy tickets
- These upgrades can only be redeemed for the SkyMiles member who earned them, plus any travelers on the same flight (so they can’t be gifted to those traveling on different flights)
With that in mind, let’s cover various aspects of redeeming these upgrade certificates.
Regions where Delta upgrade certificates are valid
Delta Global Upgrade Certificates and Regional Upgrade Certificates can be used to upgrade one-way travel, and it’s fine if that covers multiple segments.
As you’d expect, Delta Global Upgrade Certificates can be used for flights globally, including long haul flights across the Atlantic and the Pacific.
Meanwhile Delta Regional Upgrade Certificates can be used for flights within the United States, and to and from Canada, Mexico, the Caribbean, Bermuda, Central America, and Northern South America. The only quirk to be aware of is that they can’t be used for flights to Northern South America if the forward cabin is marketed as Delta One (which is how Delta markets its premium business class).
Cabins where Delta upgrade certificates are valid
Okay, so this is where it gets complicated. The ways in which you can upgrade vary greatly depending on the classes of service on a particular plane, plus the type of upgrade you’re trying to apply. I’ll provide a breakdown of that below, though let me first define a few terms (when booking a flight, you should always see it marketed in one of these ways):
- Delta One is how Delta markets its premium business class, available on long haul international flights, select medium haul international flights, and select premium domestic flights (like between New York and Los Angeles)
- Delta Premium Select is Delta’s premium economy product, available on most long haul international flights, select medium haul international flights, and select premium domestic flights (like between New York and Los Angeles)
- Domestic first class is simply your run-of-the-mill forward cabin on domestic flights (on short haul international flights it’s sometimes marketed as business class)
The ability to apply Global Upgrade Certificates and Regional Upgrade Certificates differs depending on the most premium cabin of service offered on a flight. As we go through each of the below scenarios, note the distinction between upgrades being granted “upon request” (which simply means it clears as long as there’s a seat in the cabin for sale) vs. being granted “pending upgrade availability” (which is based on a subset of inventory being available, and airlines aren’t very generous about making these seats available in advance).
For international flights with Delta One and Premium Select (this includes a vast majority of long haul, international flights, plus some premium domestic flights):
- If you purchase an economy ticket and apply your Global Upgrade Certificate, you will be upgraded to Delta Premium Select upon request, and then will be added to the waitlist for Delta One, and eligible to clear starting 24 hours prior to departure
- If you purchase Delta Premium Select and then apply your Global Upgrade Certificate, you will be upgraded to Delta One, pending upgrade availability
For domestic flights with Delta One and Premium Select (which includes premium transcon flights):
- If you purchase an economy ticket and apply your Global Upgrade Certificate, you will be upgraded to Delta Premium Select upon request, and then will be added to the waitlist for Delta One, and eligible to clear starting 24 hours prior to departure
- If you purchase an economy ticket and apply your Regional Upgrade Certificate, you will be upgraded to Delta Premium Select, pending upgrade availability
- If you purchase Delta Premium Select and then apply your Global Upgrade Certificate or Regional Upgrade Certificate, you will be upgraded to Delta One, pending upgrade availability
For flights with Delta One and without Premium Select (this includes a subset of 767-300s):
- If you purchase an economy ticket and apply your Global Upgrade Certificate or Regional Upgrade Certificate, you will be upgraded to Delta One, pending upgrade availability
For flights with domestic first class (a vast majority of flights within the United States):
- If you purchase an economy ticket, and then apply your Global Upgrade Certificate, you will be upgraded to domestic first class upon request
- If you purchase an economy ticket, and then apply a Regional Upgrade Certificate, you will be upgraded to domestic first class, pending upgrade availability
For flights with Delta Premium Select as the most premium cabin (this includes some leisure oriented international flights operated by 757s, like to Iceland):
- If you purchase an economy ticket, and then apply your Global Upgrade Certificate, you will be upgraded to Delta Premium Select upon request
- If you purchase an economy ticket, and then apply your Regional Upgrade Certificate, you will be upgraded to Delta Premium Select, pending upgrade availability
How to redeem Delta upgrade certificates
How do you actually go about redeeming Delta Global Upgrade Certificates and Delta Regional Upgrade Certificates? If you’re an eligible elite member and have the upgrade instruments in your account, then simply log into your SkyMiles account and do a flight search.
Once you find your desired flight, you’ll see any upgrade availability that there may be, and an upgrade can be requested on the spot. Let me emphasize that you should definitely manage your expectations when it comes to these upgrades actually clearing, given the extent to which Delta limits upgrade availability. Even if you’re booking a Premium Select ticket, don’t assume that there will be Delta One upgrade availability. More often than not, it won’t be immediately confirmable.
Redeeming Delta upgrade certificates on partners
In theory, Delta Global Upgrade Certificates can also be used on partner airlines, including Aeromexico, Air France, KLM, Korean Air, and Virgin Atlantic. It’s incredible how the rules for redeeming these upgrade certificates on each partner airline differ, as it all depends on which airline is marketing the flight, and also which cabin you’re upgrading to.
On Aeromexico, upgrades are possible from economy to business class, but only when the ticket is marketed by Delta:
- For travel on Aeromexico operated, Delta marketed flights, Global Upgrade Certificates may be used on Delta’s published fares booked in W, Y, B, M, H, Q, K, L, U, T, X, or V class, and all fare classes upgrade into Aeromexico’s O class for business
On Air France, upgrades are possible from economy to premium economy, or from premium economy to business class, and the flight can be marketed by Air France or Delta:
- For travel on Air France operated flights marketed by Air France, Global Upgrade Certificates may be used on Air France’s published fares booked in Y, B, M, K, H, L, Q, T, N, R, or V class, and all fare classes upgrade into A class for premium economy
- For travel on Air France operated flights marketed by Air France, Global Upgrade Certificates may be used on Air France’s published fares booked in W, S, or A class, and all fare classes upgrade into Z class for business
- For Air France operated flights marketed by Delta, Global Upgrade Certificates may be used on Delta’s Y, B, M, H, Q, K, L, U, T, X or V class, and all fare classes upgrade into A class for premium economy
- For Air France operated flights marketed by Delta, Global Upgrade Certificates may be used on Delta’s P, A, or G class, and all fare classes upgrade into Z class for business
On KLM, upgrades are possible from economy to business class, and the flight can be marketed by KLM or Delta:
- For travel on KLM operated, Delta marketed flights, Global Upgrade Certificates may be used on Delta’s published fares booked in Y, B, M, H, Q, K, L, U, T, X, or V class, and all fare classes upgrade into KLM’s Z class for business
- For travel on KLM operated flights marketed by KLM, Global Upgrade Certificates may be used on KLM’s published fares booked in Y, B, M, K, H, L, Q, T, N, R, or V class, and all fare classes upgrade into KLM’s Z class for business
On Korean Air, upgrades are possible from economy to business class or from business class to first class, but only when the ticket is marked by Delta:
- For travel on Korean Air operated, Delta marketed flights, Global Upgrade Certificates may be used on Delta’s published Y or B class, and all fare classes upgrade into Korean Air’s Z class for business
- For travel on Korean Air operated, Delta marketed flights, Global Upgrade Certificates may be used on Delta’s published J class, and all fare classes upgrade into Korean Air’s A class for first
On Virgin Atlantic, upgrades are possible from economy to premium economy or from premium economy to business class, but only when the ticket is marketed by Delta:
- For travel on Virgin Atlantic operated, Delta marketed flights, Global Upgrade Certificates may be used on Delta’s published W, S, Y, B, M, H, Q, K, L, U, T, X or V class, and all fare classes upgrade into Virgin Atlantic’s O class for premium economy
- For travel on Virgin Atlantic operated, Delta marketed flights, Global Upgrade Certificates may be used on Delta’s published P, A, or G class, and all fare classes upgrade into Virgin Atlantic’s G class for business
My take on the value of Delta’s upgrade certificates
Everyone is going to have a different strategy with their Delta Global Upgrade Certificates and Regional Upgrade Certificates, given all the limitations with redeeming them. These aren’t like American systemwide upgrades, where you can book a $500 economy ticket to Europe, and then upgrade it to business class at the time of booking.
With that in mind, a few thoughts:
- For long haul flights, the major challenge with Global Upgrade Certificates is that you need to purchase a Premium Select ticket in most markets in order to be able to upgrade to business class in advance, and that can be costly; otherwise your upgrade can clear no more than 24 hours in advance, and many people don’t want to chance an upgrade in that way
- Among the partner airlines on which you can redeem Global Upgrade Certificates, KLM is probably most tempting, since you can upgrade straight from economy to business class, even on a ticket booked directly with KLM, and the amount of upgrade inventory is actually pretty decent
- I know many people just end up using their Global Upgrade Certificates to secure upgrades to domestic first class, since you at least get last seat availability at the time of booking; there’s something to be said for using them that way, for the flights that matter most to you
- In many ways, the primary benefit of Regional Upgrade Certificates is getting higher on the upgrade waitlist on domestic flights, since there’s often not confirmable upgrade space, but at least you’re ahead of those waitlisted for complimentary upgrades
Bottom line
Delta offers Diamond and Platinum Medallion members the opportunity to earn Global Upgrade Certificates and Regional Upgrade Certificates. The catch is that there are quite a few rules when it comes to redeeming these, and on many long haul flights, you’d have to book premium economy in order to lock in a business class upgrade more than 24 hours in advance.
These upgrade instruments are probably still the best Choice Benefits you can select, though I’d recommend managing your expectations when it comes to actually redeeming them. At a minimum, the Global Upgrade Certificates can be used for last seat availability for domestic first class, which is worth something.
To Delta loyalists, what has your experience been with Global Upgrade Certificates and Regional Upgrade Certificates?
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