This question already has an answer here:
I wanted to book a direct flight from Heathrow to JFK with BA. Over night they put the price up by over £500. Now I can see the exact same flight but you have to go indirect via Newcastle to Heathrow to JFK, it works out way cheaper this way.
Is there anyway I can skip the Newcastle flight if I contact BA before and go direct to Heathrow or if I miss the Newcastle flight will the whole flight be cancelled?