| Atmos | Alaska Airlines, Hawaiian Airlines | March 31st 2021 | EmeraldAtmos Titanium, Atmos Platinum SapphireAtmos Gold RubyAtmos Silver | Alaska joined March 2021. Hawaiian joined Alaska Air Group via merger and is part of oneworld via Atmos as of April 2026. Atmos members have no oneworld lounge access on intra-North America itineraries (US/Canada/Mexico). |
| American AAdvantage | — | February 1st 1999 | EmeraldAAdvantage Executive Platinum, AAdvantage Platinum Pro SapphireAAdvantage Platinum RubyAAdvantage Gold | Founding member. AAdvantage members lack oneworld lounge access on most intra-North America flights (exceptions: JFK-LAX/SFO transcon). |
| British Airways | — | February 1st 1999 | EmeraldBritish Airways Club Gold SapphireBritish Airways Club Silver RubyBritish Airways Club Bronze | Founding member. Earns Avios — a shared currency across BA, Iberia, Aer Lingus, Vueling, Qatar, and Finnair. Concorde Lounges and the JFK Chelsea Lounge are excluded from alliance ruleset. |
| Cathay Pacific | — | February 1st 1999 | EmeraldCathay Diamond SapphireCathay Gold RubyCathay Silver | Founding member. Earns Asia Miles. Hong Kong hub. Celebrating 80 years of operations in 2026. |
| Fiji Airways Tabua Club | — | April 1st 2025 | EmeraldAAdvantage Executive Platinum, AAdvantage Platinum Pro SapphireAAdvantage Platinum RubyAAdvantage Gold | 15th full member. Announced June 3, 2024; effective full membership April 1, 2025. Uses AAdvantage as its frequent flyer programme (no separate Fiji loyalty currency). |
| Finnair Plus | — | September 1st 1999 | EmeraldFinnair Plus Platinum Lumo, Finnair Plus Platinum SapphireFinnair Plus Gold RubyFinnair Plus Silver | Helsinki hub is a Europe-Asia stopover power play. Earns Avios. |
| Iberia Plus | — | September 1st 1999 | EmeraldIberia Club Infinita Prime, Iberia Club Infinita, Iberia Singular, Iberia Club Platino SapphireIberia Club Oro RubyIberia Club Plata | Madrid hub. Spain to Latin America gateway. Earns Avios. Notable for low/no fuel surcharges on most awards (vs BA). |
| Japan Airlines | — | April 1st 2007 | EmeraldJAL Mileage Bank Diamond, JAL Global Club Premier SapphireJAL Mileage Bank Sapphire, JAL Global Club Crystal RubyJAL Mileage Bank Crystal | Tokyo Haneda + Narita hubs. JAL First Class is a perennial sweet spot redemption. |
| Malaysia Airlines Enrich | — | February 1st 2013 | EmeraldEnrich Platinum SapphireEnrich Gold RubyEnrich Silver | Kuala Lumpur hub. Business Suite (1-1-1 layout) on A350 is a sweet spot. |
| Oman Air Sindbad | — | June 30th 2025 | SapphireSindbad Gold RubySindbad Silver | Newest pre-2026 addition. Muscat hub. Sindbad has no Emerald-tier equivalent as of April 2026. |
| Qantas Frequent Flyer | — | February 1st 1999 | EmeraldQantas Frequent Flyer Platinum One, Qantas Frequent Flyer Platinum SapphireQantas Frequent Flyer Gold RubyQantas Frequent Flyer Silver | Founding member. Sydney + Melbourne hubs. Qantas Domestic Business Lounges excluded from alliance Sapphire access. |
| Qatar Airways | — | October 30th 2013 | EmeraldPrivilege Club Platinum SapphirePrivilege Club Gold RubyPrivilege Club Silver | Doha hub. Earns Avios since 2023 program revamp. Qsuite Business Class is widely considered the world's best business product. |
| Royal Air Maroc Safar Flyer | — | April 1st 2020 | EmeraldSafar Flyer Platinum SapphireSafar Flyer Ambassador, Safar Flyer Gold RubySafar Flyer Silver | First and only African full member. Casablanca hub. |
| Royal Jordanian Royal Plus | — | April 1st 2007 | EmeraldRoyal Club Platinum HAWK SapphireRoyal Club Gold SPARROW RubyRoyal Club Silver JAY | Amman hub. |
| SriLankan FlySmiLes | — | May 1st 2014 | EmeraldFlySmiLes Platinum SapphireFlySmiLes Gold RubyFlySmiLes Classic | Colombo hub. Some short-haul India-Maldives sectors excluded from Emerald/Sapphire lounge access in economy. |