--- title: "Airline upgrade certificates compared: SWU, GUC, RUC" description: "SWU, GUC, RUC and Alaska certificates side by side: how each is earned, what it upgrades, where it works, when it expires and whether you can share it." canonical: "https://2lnr.com/guides/upgrade-certificates-compared" url: "https://2lnr.com/guides/upgrade-certificates-compared.md" date_modified: "2026-10-07T00:00:00Z" --- # Airline upgrade certificates compared: SWUs, GUCs, RUCs and more An airline upgrade certificate is a one-cabin upgrade you earn or select, then apply to a flight. American calls it a systemwide upgrade (SWU), Delta issues Global and Regional Upgrade Certificates (GUCs and RUCs), and Alaska issues milestone certificates. All of them confirm only where the airline has opened upgrade space, except a Delta GUC into domestic First or Premium Select, which Delta clears from any unsold seat on request. Reviewed October 7, 2026. ## What each certificate is One sentence each. Every carrier page has the full rules. ### American SWU A systemwide upgrade is an American Airlines certificate for one cabin up, earned as a Loyalty Point Reward. [How SWUs are earned and used](https://2lnr.com/about/aa/systemwide-upgrades.md). ### Delta GUC A Global Upgrade Certificate is the Delta Diamond Medallion Choice Benefit that moves you up one cabin on Delta and select partner flights. [The full GUC guide](https://2lnr.com/about/dl/global-upgrade-certificates.md) is the place for expiry and clearing detail. ### Delta RUC A Regional Upgrade Certificate is the Platinum and Diamond Choice Benefit for one cabin up on Delta flights, on the routes where complimentary upgrades run. [The full RUC guide](https://2lnr.com/about/dl/regional-upgrade-certificates.md). ### Alaska milestone certificate An Alaska upgrade certificate is a code you choose as an Atmos Rewards milestone reward, good for one person on one one-way trip. [How to use an Alaska certificate](https://2lnr.com/about/as/upgrade-certificates.md). 2LNR does not track United PlusPoints, so they are not in this table; [how United PlusPoints work](https://2lnr.com/about/ua/pluspoints.md) sets them beside these certificates. For the other ways an upgrade clears, including complimentary status upgrades, see [how to get upgraded](https://2lnr.com/guides/how-to-get-upgraded.md). ## Upgrade certificates side by side Who earns each one, what it does, where it works and who can use it. Programs change often; the dates under Sources show when each row was read. American, Delta and Alaska upgrade certificates compared by who earns them, cabin jump, where valid, confirm or waitlist, expiry and sharing | | American SWU | Delta GUC | Delta RUC | Alaska certificate | | :--- | :--- | :--- | :--- | :--- | | Who earns it | Loyalty Point Rewards from 175,000 Loyalty Points (up to two there, up to four at 250,000), plus Million Miler levels | Diamond Medallion Choice Benefit: four GUCs, or two GUCs and four RUCs | Diamond (eight RUCs, or the mix above) and Platinum (four RUCs) Choice Benefit | Atmos Rewards milestone reward, offered from the 55,000 status point milestone | | Cabin jump | One cabin, one way, up to three segments | One cabin | One cabin | First Class on North American routes; long-haul needs one or more certificates by route | | Where it works | American flights, and British Airways transatlantic with at least one American-marketed flight | Delta-marketed flights and select partner flights | Delta flights | Alaska-marketed and ticketed flights in North America including Hawaii; Alaska and Hawaiian long-haul flights departing on or after April 22, 2026 | | Confirm or waitlist | Confirms where upgrade space is open, otherwise joins the waitlist (no waitlist on British Airways) | Domestic First and Premium Select: any unsold seat, on request. Delta One: open upgrade space, otherwise the waitlist. Partner flights: confirm more than 24 hours out, no waitlist | Confirms into open upgrade space, otherwise joins the waitlist | North America: confirms on the spot or not at all, no waitlist. Long-haul: a separate certificate waitlist | | Expiry | Runs to March 31 of the year after the status year it was earned | Book and fly it by the end of the Medallion Year you selected it for | Book and fly it by the end of the Medallion Year you selected it for | Check the code in your Atmos Rewards account | | Who can use it | Can be gifted; cannot be sold | Usable for you and for companions on the booking | Usable for you and for companions on the booking | One person per code; transferable, but cannot be bartered, bought or sold | The Delta Medallion Year for 2026 selections ends on January 31, 2027. Status earned during 2026 belongs to the 2027 Medallion Year, which ends January 31, 2028. American's systemwide upgrades and Delta's partner airlines come from each airline's own terms, so read the carrier page before you book around one. ## Which airline upgrade certificate is easiest to use? A Delta GUC on a domestic flight, since Delta says it clears into any unsold First or Premium Select seat on request. For the rest, pick a flight with open upgrade space, because ease comes down to what happens when the space is closed. ### Certificates that can wait on a list American and Delta certificates on their own flights, and Alaska long-haul requests, can wait on a list and clear later if space opens. Delta puts certificates ahead of complimentary upgrades, and orders waitlisted certificates by Medallion tier, then by request time. ### Certificates with no waitlist Alaska's rules let a certificate in North America confirm only when space is open, with no list to wait on. A British Airways transatlantic SWU can't be waitlisted, and neither can a Delta certificate on a partner-operated flight. Check space first on those, because a miss leaves nothing waiting for you. ### Partner flights have extra rules A Delta GUC reaches select partner flights, and an American SWU reaches British Airways across the Atlantic. Alaska certificates apply only to Alaska-marketed flights. On American-operated flights, Atmos elite members can get complimentary upgrades instead. ### Pick the flight first Pick the flight, not the certificate. Where 2LNR shows upgrade space open on your route and date, a certificate has something to confirm into; where it shows none, there's nothing to confirm into yet. ## How to check space for each one 2LNR checks upgrade space on American, Delta and Alaska and shows it by route and date, so you can look before you apply anything. - **American SWU:** [how to check SWU availability](https://2lnr.com/guides/swu-search.md), then [how the waitlist works](https://2lnr.com/guides/upgrade-waitlist.md) if it is closed. - **Delta GUC and RUC:** [Delta upgrades and clearing order](https://2lnr.com/about/dl/upgrades.md). - **Alaska certificate:** [Alaska upgrade strategy](https://2lnr.com/guides/alaska-upgrades.md) and [using a certificate](https://2lnr.com/about/as/upgrade-certificates.md). - **All three:** look on the [upgrade availability dashboard](https://2lnr.com/lp/upgrade-dashboard.md), or read how [the search tools compare](https://2lnr.com/guides/best-upgrade-search-tools.md). - **Who clears first once space opens:** [upgrade priority on American, Delta and Alaska](https://2lnr.com/guides/upgrade-priority.md). ## Frequently asked questions **What is the difference between an SWU and a GUC?** An SWU is American Airlines' certificate and a GUC is Delta's. Both move you up one cabin, and an SWU confirms only where American has opened upgrade space, while a Delta GUC clears into any unsold domestic First or Premium Select seat on request and needs open space only for Delta One and partner cabins. They differ in who earns them (Loyalty Point Rewards at American, a Diamond Medallion Choice Benefit at Delta), in where they are valid, and in when they expire: an SWU runs to March 31 of the year after the status year it was earned, a GUC to the end of the Medallion Year it was selected for. **How does a Delta RUC compare with a GUC or an SWU?** A Delta Regional Upgrade Certificate moves you up one cabin on Delta flights on the routes where complimentary upgrades run, and Platinum and Diamond members can choose it. A Global Upgrade Certificate, for Diamond members only, also reaches long-haul Delta One and select partner flights. An American SWU works on American flights and on British Airways across the Atlantic. All three need open upgrade space for most cabins. **Are airline upgrade certificates transferable?** Mostly yes, with limits. American's systemwide upgrades can be gifted but not sold. Alaska certificates are transferable, with one person and one one-way trip per code, and cannot be bartered, bought or sold. Delta certificates can be used for you and for companions on the booking. Read each airline's terms before you hand one over. **Which airline upgrade certificate is easiest to use?** On a flight with no open upgrade space, none of them is easy; on a flight with some, all of them are. The difference is the waitlist. American and Delta certificates can wait on their own flights and may clear later. An Alaska certificate in North America, or a Delta certificate on a partner flight, can't wait. Check space first and the certificate type matters much less. **Do certificates outrank complimentary status upgrades?** On Delta, yes: certificates have higher priority than complimentary Medallion upgrades. At American, a request backed by a systemwide upgrade clears ahead of a complimentary one at the same status. The full order is in the upgrade priority guide. ## Sources - [Delta: Medallion Choice Benefits](https://www.delta.com/us/en/skymiles/medallion-program/choice-benefits) Source for who can choose certificates and how many (Diamond: four Global, eight Regional, or two Global and four Regional; Platinum: four Regional), the end-of-Medallion-Year expiry, companion use, and partner flights for Global certificates. (accessed October 7, 2026) - [Delta: Medallion upgrades](https://www.delta.com/us/en/skymiles/medallion-program/medallion-upgrades) Delta's rules for certificates: they rank above complimentary upgrades and clear off the waitlist by Medallion tier, then request time. A GUC takes any unsold domestic First or Premium Select seat on request. On partner flights a certificate has to confirm more than 24 hours out, and there's no waitlist. (accessed October 7, 2026) - [Alaska Airlines: complimentary upgrades](https://www.alaskaair.com/atmosrewards/content/benefits/complimentary-upgrades/alaska-hawaiian) Source for certificates as milestone rewards from the 55,000 milestone, one-way use for one person, transferable but not for sale, no waitlist in North America, the long-haul certificate waitlist for departures from April 22, 2026, and no use on award tickets. The page states no expiry date. (accessed October 7, 2026) - [American Airlines: upgrades for status members](https://www.aa.com/web/i18n/aadvantage-program/answers-support/upgrades-for-status-members.html) American's own page, read directly for the Million Miler upgrades, one-way use on up to three flights, the rule that a British Airways trip needs an American-marketed flight, the March 31 expiry, the waitlist, and transfer without sale. The British Airways waitlist limit rests on the independent source below. (accessed October 7, 2026) - [One Mile at a Time: American systemwide upgrades guide](https://onemileatatime.com/guides/american-airlines-systemwide-upgrades/) Independent source for SWU earning (up to two at 175,000 Loyalty Points, up to four at 250,000, four per Million Miler level), the March 31 expiry rule, gifting, three segments per one-way trip, and the British Airways limits. (accessed October 6, 2026) American Airlines, AAdvantage, Delta, SkyMiles, Medallion, Alaska Airlines and Atmos Rewards are trademarks of their owners; 2LNR is not affiliated with or endorsed by any airline. Program details are as of October 2026 and may change; see the sources above. Related guides: [How to get upgraded](https://2lnr.com/guides/how-to-get-upgraded.md) | [Upgrade priority compared](https://2lnr.com/guides/upgrade-priority.md) | [Delta GUCs](https://2lnr.com/about/dl/global-upgrade-certificates.md) | [American SWUs](https://2lnr.com/about/aa/systemwide-upgrades.md) | [Search tools compared](https://2lnr.com/guides/best-upgrade-search-tools.md) ## See where upgrade space is open Check the flights your certificate can confirm on before you apply it. Free for the next 14 days; Pro opens all 331. [Open the upgrade dashboard](https://2lnr.com/lp/upgrade-dashboard.md)