| 2020 | 2021 | 2022/23 | 2025 | 2028 |
2020 - HAL to submit a final expansion proposal to the Planning Inspectorate.
2021 - Transport Secretary of State to make a decision on whether to grant a Development Consent Order after inspectors have made a recommendation.
2021 - Main construction expected to begin according to the Airports Commission.
2021 - Stage three consultation on airspace change proposals expected to take place.
2022 and 2023- Final proposals on airspace change likely to be submitted.
2025- Expected completion of the new runway including a new tunnel for the M25 motorway that will pass underneath.
2028 -Airport's overall expansion expected to be fully operational.
**The indicative period for the construction phase which includes the enabling works for site preparation is 2011- 2024 and the airfield expansion including the runway and taxiways works is 2024 - 2026
**The operational phase includes operational commencement of the third runway from 2026 onwards and delivery of the campus development including construction of the new terminals and satellite buildings is from 2023 to 2035.
