Loganair has its base at Glasgow Airport, and is the largest regional airline in the UK when it comes to number of passengers and fleet size. Besides Glasgow, Loganair also has operating bases in cities like Aberdeen, Edinburgh and Derry. If you travel with Loganair you will mostly find domestic flights. The airline codeshares with operators like KLM and British Airways.
An airline hub is an airport where the airline has a heavy presence and normally some kind of headquarters. On the other hand, a focus city is a destination where the airline operates limited point-to-point routes. In these cities, the airline doesn’t necessarily need to have an office (even though this sometimes is the case). Many low-cost airlines don't use the definition 'hub' but instead define their main airports of operations as an operating base.
IATA Code: LM
ICAO Code: LOG