Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Glasgow to Caracas as you normally would.
Caracas Simon Bolivar (CCS) is the airport you will fly into if you book a flight from Glasgow to Caracas. You should not have trouble finding flights to Simon Bolivar from Glasgow; the airport handles an average of 0 inbound flights from Glasgow per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Caracas airport from Glasgow. It is only a 10.3 mi journey from Simon Bolivar (CCS) to Caracas’s city centre.