The Heathrow Express is an ultra-fast airport train connecting airport terminals 2, 3 & 5 to London Paddington Station in just under 20 minutes as there are just 3 stations on the route. The train operates at a 15 minute frequency which is quite high for such a service.Â
The popularity for this is primarily for these 5 reasons:
Speed: The train does not have any in between stops which means it has a continuous speed making it faster.
Reliability: This train does not get delayed no matter the weather or how crowded it is, the train will run every 15 minutes.
Luggage friendly: With all travelers mainly being flight passengers, it is obvious that they would have luggage which is why the trains have a good space for keeping luggage.
Comfortable ride: The trains are very comfortable and feels no less than a business class trip. This is far better than the piccadilly line which would be very uncomfortable (especially with bags) being full of city commuters.
Accessibility: The train allows not just luggage but wheelchairs, they allow for cycles at non-peak hours making it very useful and better than a taxi.
The route of the train
There are always many ways to book a ticket but the most convenient way is to go to https://www.heathrowexpress.com and get a e-ticket.
With the e-ticket, it can be shown and just board the train & jet into the city in under 20 Minutes!
For this comparision, we will see the cost of journey from Trafalgar Square to Heathrow Terminal 5 from where a lot of North American & Asian flights leave from.
The heathrow express ranks as the most expensive way to travel to/from the airport. But this is primarily of the high speed & usage of the great western main line.
The choice ultimately is on the passenger on how should he/she go to/from the airport.