three hoursWhen to arrive. We recommend getting to the airport three hours before your flight if you're travelling internationally, or two hours if you're travelling domestically or to Europe.
How much faster is Heathrow Express?
Heathrow Express trains from Heathrow to London, have a total journey time of 15 minutes non-stop into London Paddington, when travelling from Heathrow Central station. Trains leaving Terminal 5 station will take six minutes to travel to Heathrow Central before running directly into London Paddington.