There's over 182 domestic routes flown in the UK (Heathrow - Edinburgh is the most popular one): https://commonslibrary.parliament.uk/domestic-flights-in-the-uk

There's over 182 domestic routes flown in the UK (Heathrow - Edinburgh is the most popular one): https://commonslibrary.parliament.uk/domestic-flights-in-the-uk-where-do-we-fly/ https://commonslibrary.parliament.uk/domestic-flights-in-the...