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A deep dive into the Hammersmith to Heathrow journey, analyzing the A4 route, traffic impact during peak hours, and transport alternatives.
A direct Hammersmith to Heathrow transfer is a staple route for West London professionals. Covering approximately 13 miles, the journey takes 30-35 minutes off-peak, costing around £45. However, this route heavily depends on the A4 and M4, meaning travel times can fluctuate significantly based on time of day. This guide breaks down the exact route, traffic bottlenecks, and public transport comparisons.
The Route: A4 to M4
Departing from Hammersmith, the route typically joins the A4 Cromwell Road extension or the Great West Road immediately via the Hammersmith Flyover. Passing the Hogarth Roundabout in Chiswick, the vehicle merges onto the M4 at Junction 1. The M4 leads directly to the Heathrow spur road for Terminals 2 & 3, or continues slightly further for Terminals 4 and 5.
Peak vs Off-Peak Traffic
During the morning rush (07:00-09:00), eastbound traffic into London is heavier, but westbound traffic towards Heathrow on the A4 can still face delays around the Hogarth Roundabout and M4 Junction 2. Rush hour can add 15-20 minutes to the journey. For travelers considering the Piccadilly Line from Hammersmith station, the tube takes roughly 35-40 minutes. While immune to road traffic, a private Hammersmith airport transfer or Kensington to Heathrow booking provides dedicated luggage space and door-to-door comfort.
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