Englishfor English speakers
through
Preposition
—
To go through is to go into one side of something and come out the other side.
The thief came in through the window.
She pushed the thread through the hole in the needle.
via
Preposition
—
You use via to mean the path that something takes when it goes somewhere (the places it goes through before it gets there).
We can send video, audio and data from any point in the UK, via satellite.
This became part of our route from Liverpool to Manchester via Runcorn.
John sent the message to Yoko via Hamid.