For the fastest route from London Kings Cross to Heathrow Airport, simply take the London Underground directly to London Paddington and catch the Heathrow Express non-stop to the airport.

Both the Hammersmith and City Line and the Circle Line provide direct services between Kings Cross and Paddington, while the Heathrow Express is the quickest way to get to Heathrow Airport non-stop.

London Paddington to London Heathrow

Heathrow Express connects London Paddington and Heathrow Central in just 15 minutes. With trains running from Paddington every quarter of an hour, it’s the quickest way to go to London Heathrow non-stop.

Once you arrive at London Paddington on the underground, simply follow the signs to the Heathrow Express. We usually depart from either platform six or platform seven, but make sure you check the board for the right platform.

Heathrow Express serves both train stations at Heathrow Airport. If you’re flying from either Terminal 2 or Terminal 3, board the Heathrow Express at Heathrow Central, while if your flight leaves from Terminal 5, continue on the train for another six minutes to complete your journey into Terminal 5 station. Those flying from Terminal 4 can jump on a quick shuttle bus from Heathrow Central.

With journey times of just 15 minutes on Heathrow Express, we provide the fastest route to the airport from London Paddington, compared to the London Underground, local taxis and TfL Rail Heathrow.

Heathrow Express Time Comparison

How long does it take to get from London Kings Cross to Heathrow?

Journey times between Kings Cross and London Heathrow will take between 45 minutes and one hour.

When choosing to take the Heathrow Express from London Paddington to Heathrow, your journey time will be 45 minutes. Heathrow Express trains take just 15 minutes to reach Heathrow Central and an additional six minutes into Heathrow Terminal 5 station.

How much does it cost to get from Kings Cross to Heathrow?

The cost of getting from Kings Cross to Heathrow, or Heathrow to Kings Cross, will depend on how far in advance you purchase your tickets for Heathrow Express.

By booking at least 90 days in advance you can enjoy savings of up to 75%, with an Advanced Purchase Single costing just £5.50. Heathrow Express tickets purchased closer to the time will cost £22 for an Off Peak Single and £25 for an Anytime Day Single. If you’re travelling to the airport as a family, there are cost savings to be made on two adult tickets with a Duo Saver, while kids aged 15 and under will travel for free

Express and Business First Class on Kings Cross – Heathrow Express Journey

Quick connections and a comfortable travel experience are central to the Heathrow Express experience. In addition to enjoying the fastest non-stop service between Paddington and London Heathrow, passengers on board Heathrow Express can also enjoy:

  • Plenty of luggage space
  • At-seat power
  • Free 4G Wi-Fi
  • Onboard TV service offering useful journey information and BBC World News
  • Level platform access to all our trains at all platforms

For those that opt for our Express Class service, they will also enjoy Premium Seating with plenty of legroom for a comfortable journey to the airport. Passengers opting for our Business First Class service can make the most of a larger seating area and a personal table to catch up on some work before their flight, or simply to relax with a complimentary newspaper or magazine.


*Journey times based on route between London Paddington and Heathrow Terminal 3. Data sources: Google Maps for journey time by Taxi, TfL Journey Planner for journey time by Tube Tfl Rail and Heathrow Express. For Tube and Tfl Rail, the journey time represents an average, based on estimated best journey times shown on TfL Journey Planner on the hour every hour from 5am to 10pm for each day of August 2019. For Taxi, the journey time represents an average, based on an estimated range of journey times shown on Google Maps on the hour every hour from 5am to 10pm for each day of August 2019.