The first non-Star Alliance carrier has moved into its new home at the Queen's Terminal (T2).
Irish airline Aer Lingus transferred operations from Terminal 1 to the newly opened Terminal 2, last Wednesday (9).
Following Eva Air, Air Canada, All Nippon Airways, Air China, United and US Airways, into the new building will be Aegaen on July 23, followed by Virgin's Little Red on September 10.
Terminal 2 had a soft opening on June 4, 2014 and the building otherwise known as the Queen's Terminal was opened by Her Majesty Queen Elizabeth II in a royal opening on June 23.
Thai Airways' and Turkish Airlines' plans to move into Terminal 2 have been postponed until August 28, and in the meantime will continue to operate from Terminal 1.
No date has been set for new Star Alliance member Air India to move from T4.
Heathrow plans airlines moving from T1 to T2, T3, T4, and T3 to T2, and T4 to T3, will be complete by the start of the winter season on October 26.
As part of the airport operators £11bn investment to transform Heathrow so far has included the construction of T5, a new control tower, refurbishment of T3 and T4 and the recent construction of T2.
T1 will be next to close in 2016 and the building will be demolished to make way for the T2 expansion.
Among the other airline changes include Sri Lankan changes from T4 to T3 on July 16; while Delta continues to operate its Atlanta, Detroit and Minneapolis services from T4 with Boston, New York (JFK) and Seattle from T3.
Further information on flight and terminal changes visit www.heathrowairport.com/flight-information/airline-moves