Heathrow Express to Terminal 3?

Assuming that it is a landside transfer get the Heathrow Exp from T5 to Heathrow Central. It is free. Get on the back on the train then the nearest exit wil take you closest to T3. I think the Heathrow Exp is every 15 minutes but they go to T4 as well on a seperate Branch so I am not sure if they are every 15 minutes from T5, if you see what I mean.

According to this they are 4 an hour from T5 to Heahrow Central.

Doesn't paste very well

From

Then minutes past the hour

Until

Monday to Saturday Departures
Every 15 mins from 5:12 - 23:48
Journey time: 21 minutes

05:07 05:27 05:42

57 - 12 - 27 - 42

23:53*

Sunday Departures
From 5:03 - 08:48
Average journey time: 21 minutes

05:03 05:18 05:48

03 - 18 - 33 - 48

08:48

Sunday Departures
From 09:00 - 21:27
Average journey time: 21 minutes

09:00 09:13

12 - 27 - 42 - 57

21:27

Sunday Departures
From 21:48 - 23:48
Average journey time: 21 minutes

21:48

03 - 18 - 33 - 48

23:48

Hi,

See this link. http://goo.gl/S3R7aJ

Are you trying to get fron central London to terminal 3? The Heathrow Express also stops at Terminals 1 and 3 before going on to the terminus at Terminal 5.

sorry, I was unclear in my original post. I'm trying to get from Paddington to terminal 3, and t appeared that the Heathrow Express stopped at T5, so I was trying to figure out a simple way to get from that stop at T5 to check in for my flight, which will depart from T3..
does the Heathrow Express also stop at T3?

T1 and T3 are Heathrow Central.

Have you considered the cheaper alternative Heathrow Connect of the even cheaper Piccadilly Line?

Info at https://www.heathrowexpress.com/timetable-schedule/london-heathrow

If you’re going to Terminal 1 or Terminal 3, board any train and get off at Heathrow Central. Journey time is 15 minutes.
For Terminal 5, get on the London-Heathrow train at Paddington and stay on board at Heathrow Central – all trains continue to Terminal 5, arriving six minutes later.
For Terminal 4, change at Heathrow Central and catch the free transfer service. These connecting trains depart every 15 minutes and travel time is four minutes.

Now, finally, I understand! I'd thought that the Heathrow Express went only to T5, and I'd then have to transfer to a bus or underground connection to reach T3.
Many thanks for the replies!