Glasgow Airport to City Centre and Back, Winter of 2023, Scotland 

Driving from Glasgow City centre to Glasgow airport (GLA) dropoff/pickup and back to city centre.
This video is for the Winter of 2023.
Currently driving through the dropoff costs £4 (you can wait max 10 min), and the longer you stay waiting in the area the higher the charge, £15 for 30 min waiting in case of pickup.
The GLA (Glasgow Airport) is the Glasgow's international airport which has most international flights. There are buses that go between GLA and the city centre quite regularly.
There is also the PIK (Prestwick International Airport) which for some reason also widely referred to as Glasgow Prestwick Airport, which is not even in Glasgow, it's about 45-60 min from Glasgow city centre, and it's in Prestwick near Ayr. Usually for domestic and short-distance-international flights. I guess the best thing about PIK is that it has its own train station that connects it to Glasgow city centre.