T5B to T5B Connections, T5C to T5C Connections, and T5B/C to T2/3/4 Connections
Arrivals in to T5C and T5B will typically go to T5A to proceed through the flight connections centre (FCC) – and the FCC and T5A are what this guide is predominantly about. However, it is possible to go through flight connections at either T5B or T5C if your onward flight is already listed as departing from either of these two, and it is also possible to go from T5C and T5B to T2/3/4 directly from the satellite buildings without going all the way to T5A. Some excellent guides already exist (courtesy of
corporate-wage-slave) for these options, so rather than repeat the details on these options please see the below:
LHR Terminal 5B Flight Connections - a pictorial guide - including T5B bus service to T2-4
LHR Terminal 5C Flight Connections - a pictorial guide
T2/3/4 to T5 Connections
If you are arriving in to any of the other terminals at LHR and have an onward flight from T5 you have two options to transfer terminals. You can either:
1. Exit landside at the terminal you arrive at (subject to you having right of entry to the UK) and take one of the Heathrow Express (HEX), tube, or even a TfL bus to T5.
2. Remain airside and follow the signs for flight connections. You will then catch an airside bus to T5 and arrive at T5A at the point shown in
post #4 where you go up from the ground floor to arrivals/flight connections.
The airside option 2 is the easiest and quickest. However, this option only works if you don't have any checked bags, or have checked bags and they are through checked on to your T5 flight. If your bags are through checked there is no need for you to see them at LHR and you can simply use the airside bus. If your bags are not through checked you will have to follow option 1 as you will have to collect your bags at the terminal you arrive at, and take them across to T5 yourself before re-checking them.
The tube trains are every 8-12 minutes. If going from T2/3 to T5 take the tube for one stop to the T5 tube station. From T4 you will need to go one stop to the central tube station ‘Heathrow T123’, cross to the opposite platform, and catch a T5 bound tube. The tube requires a card to check in and out and this can be either an oyster card or contactless credit/debit card. Even though you check in and out for inter-terminal transfers you will not be charged as they are free.
The HEX trains are every 15 minutes and it is one stop to T2/3 to T5. To get from T4 to T5 you need to change at the T2/3 station where you wait for a separate train to T5. As of May 2018 the HEX requires either an oyster/contactless cards to use (like the tube it is is also free between terminals), or you can get one of the free transfer tickets. See
this post 360 for more details.
Once at T5 you can use the rest of the guide above and specifically
post #8 to see what your options are.