About 70 miles
Yes, the postal code TW6 3FB corresponds to Heathrow Terminal 4. This terminal serves both domestic and international flights and is part of the Heathrow Airport complex in London. The postal code helps identify the specific area within the airport for mailing and navigation purposes.
Heathrow Airport is so big that it has many post codes. The post code for most of Terminal 4 is TW6 3XZ
TW6 1JS is the postcode for the station for terminals 1, 2 and 3.
You will have to specify exactly who you are trying to contact when you write to the airport.
What is the postal address of Heathrow airport terminal 5
The postcode for Terminal 5 at Heathrow Airport is TW6 2GA. This terminal serves both domestic and international flights and is one of the main terminals at the airport.
Terminal 4 has more than one post code but the terminal office post code is TW6 3XZ. If you are writing to another organisation within the terminal, so long as you put their correct name on the letter and the above post code, it should arrive safely.
The postal address for Heathrow Airport is: Heathrow Airport, 234 Bath Road, Hayes, Middlesex, UB3 5AP, United Kingdom
Heathrow, London, UK
The airport code for Yakima Air Terminal is YKM.
The UK doesn't use ZIP codes, it uses post codes which are much more detailed, so each of the five terminals at Heathrow will have its own post code.
The airport code for Cavern City Air Terminal is CNM.