| AirlineId | AirlineAllianceId | MembershipType | JoinDate | QuitDate | SponsoredBy |
|---|---|---|---|---|---|
| British Airways | Oneworld | Member | 02/01/1999 | Founder | |
| BA CityFlyer | Oneworld | Member | 02/01/1999 | British Airways | |
| Comair | Oneworld | Member | 02/01/1999 | British Airways | |
| OpenSkies | Oneworld | Member | 02/01/1999 | British Airways | |
| Sun-Air | Oneworld | Member | 02/01/1999 | British Airways | |
| Cathay Pacific | Oneworld | Member | 02/01/1999 | Founder | |
| Cathay Dragon | Oneworld | Member | 02/01/1999 | Cathay Pacific | |
| Finnair | Oneworld | Member | 09/01/1999 | ||
| Nordic Regional Airlines | Oneworld | Member | 09/01/1999 | ||
| Iberia | Oneworld | Member | 09/01/1999 |