Heathrow Terminal 4 is an airport terminal at Heathrow Airport, the main airport serving London, England, situated to the south of the southern runway, next to the cargo terminal. It is connected to Heathrow Terminals 2 and 3 by the vehicular Heathrow Cargo Tunnel, and by rail with the Heathrow Terminal 4 tube and Heathrow Terminal 4 railway stations. The terminal was temporarily closed in 2020. Built at a cost of £200 million, Terminal 4 was opened by the Prince and Princess of Wales on 1 April 1986. British Airways was the main airline operating from the terminal from 1986 until its move to Terminal 5 on 29 October 2009, eventually making Terminal 4 the Heathrow base for airlines of the SkyTeam airline alliance.
Overview
Terminal design
The terminal was initially designed as a facility for short-haul 'point-to-point' traffic, to compensate for its relatively long distance from the airport's central terminal area (CTA). The layout of the terminal, with passenger boarding gates very close to the check-in and security halls, was designed to facilitate rapid movement of passengers through the building (a requirement for short-haul, business-focused flights). Upon opening, it boasted other innovations including the complete segregation of arriving and departing passengers and a departure concourse over long.
Lord King, then Chairman of British Airways, demanded that Terminal 4 be solely for the use of British Airways to fulfill the airline's ambition of hosting all its flights in one terminal (an ambition that still has not been achieved even with the opening of Terminal 5 in 2008). A similar demand was made on the North Terminal at Gatwick.
Terminal 4's distance from the CTA and design were ill-suited for British Airways' long-haul operations and could be seen as a contributor to the airline's dire operational performance, particularly in the years up to Terminal 5's opening in 2008. For example, passengers had to transfer between Terminal 4 and the CTA by bus rather than by a short moving walkway (as between Terminals 1 and 3 for example) and once inside Terminal 4, the gate areas are not large enough for the 400+ passengers waiting to board the waiting Boeing 747s. Passengers' baggage also had to make the trip by van, sometimes resulting in the luggage being mislaid, although this problem was somewhat alleviated in the late 1990s by the construction of an automated transfer tunnel between the CTA and Terminal 4.
Improvements and renovations
Following the transfer of most of British Airways' flights to Terminal 5 during 2008, Terminal 4 underwent a £200m upgrade to enable it to accommodate 45 airlines and serve as the base for the SkyTeam airline alliance. The departures forecourt has been upgraded to reduce traffic congestion and improve security and an extended check-in area opened in late 2009. Most internal areas of the terminal were renovated between 2009 and 2014, whilst a new SkyTeam Alliance passenger lounge for premium passengers opened in 2009, more recently followed by the Etihad Airways Lounge. A Malaysia Airlines Golden Lounge, Gulf Air Golden Falcon Lounge, Qatar Airways Premium Lounge and Plaza Premium Lounge have all opened since 2010. Two new stands to accommodate the Airbus A380 were constructed in 2009, and a further two opened in 2015. A new baggage system has also been installed. Refurbishment of the arrivals areas is ongoing as of early 2016.
Closure during the COVID-19 pandemic
In 2020, all flights from Terminal 4 were suspended as a result of the COVID-19 pandemic. Consequently, rail and tube services to Terminal 4 station were withdrawn; TfL Rail services were diverted to T5. Heathrow also closed one of its runways in response to the drop in flights. In June 2021, Terminal 4 reopened as a terminal for passengers arriving from red list countries only. The rail and underground station remained closed back then.
On 23 February 2022, Heathrow CEO John Holland Kaye announced that Heathrow Terminal 4 was to reopen in time for the summer travel peak in July. It was later announced that the Terminal will reopen on June 14.
Usage
SkyTeam
Terminal 4 is the base for SkyTeam members except Aeroméxico, Delta Air Lines, Middle East Airlines, Virgin Atlantic (all Terminal 3 only) and China Airlines (Terminal 2 only). Delta Air Lines vacated to Terminal 3 on 14 September 2016 to ease connections with partner Virgin Atlantic.