Heathrow Airport

Heathrow airport has been designated by the Government as a Coordinated airport under the EU slot Regulation.

Airport Opening Hours
Heathrow airport is open 24 hours a day, 7 days a week, year round.

ACL provides services from 0900 to 1700 UK local time, on weekdays only (excluding public holidays) and the coordination team can be contacted as follows:

Coordinator Contact Details


ACL Out of Hours Coverage
Outside normal office hours (evenings, weekends, public holidays), service is provided by the airport operator.

Please note – the Out of Hours service will only deal with short term ad-hoc schedule changes and new requests.  All other changes must be submitted to ACL during normal office hours.

The contact numbers for Out of Hours assistance at Heathrow are shown below:


Cover Provided By Telephone No. Fax No. / E-mail
Stand Allocation Unit +44 (0)20 8745 6033 +44 (0)20 8745 7229


Planned Closures for Maintenance
We are currently unaware of any planned closures for maintenance at Heathrow airport.

Local Guidelines
Article 8(5) of the slot Regulation enables additional rules and guidelines for the coordination of airports to be established by the air transport industry or the Coordination Committee to deal with specific scheduling problems and issues, provided such rules

  • do not affect the independence of the Coordinator
  • comply with Community law
  • improve the efficient use of the airport.

At the airports served by ACL a number of Local Guidelines have been developed and agreed by the Coordination Committees to deal with specific scheduling issues.

Local Guideline 1
The Coordination Committee at Heathrow has agreed a local rule to deal with the allocation and distribution of Night Movements and Night Noise Quota to comply with limitations on night operations set by the UK Government.   To view full details, please click here.

Local Guideline 2
A local guideline governing Ad Hoc (short-term, non-seasonal) procedures at Heathrow has been agreed by the Ad Hoc Working Group.  To view full details, please click here.

Local Guideline 3
This guideline concerns the administration of the Heathrow Air Transport Movement Cap. in accordance with Article 6 of the Slot Regulation.  To view full details, please click here.

Local Guideline 4
Heathrow Procedures For Temporarily Reduced Capacity.  To view full details, please click here.

Airport Committees
A number of committees have been formed to deal with various scheduling and coordination Issues.

The Constitutions, Terms of Reference and, in some cases, Minutes of some of these committees are available in the ACL Reference Library.

At Heathrow the major committees are the Coordination Committee and the Scheduling Committee. 

Seasonal Reports
For each scheduling season ACL publishes a seasonal report containing details of the slots requested and allocated and the utilisation of airport capacity and infrastructure.

The Seasonal Report is normally published around the start of each season.

Copies of the seasonal reports for Heathrow can be downloaded from the Reports / Statistics section.

The reports are in either Adobe PDF or Microsoft Word format. If you do not have Adobe Acrobat installed, you can download it from Adobe´s web site www.adobe.com

Heathrow Airport: An introduction to Secondary Slot Trading (July 2015)


Capacity Declaration