When flying from Thailand to Funchal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Funchal Madeira (FNC), located 14.4 km from the city centre, is the airport you fly into when you book flights from Thailand to Funchal.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Bangkok Suvarnabhumi Airport to Funchal Madeira Airport flight would often be abbreviated as a BKK to FNC flight. Phuket City Airport (HKT), Chiang Mai Airport (CNX), Bangkok Don Mueang Intl Airport (DMK), Ko Samui Airport (USM), Krabi Airport (KBV) are other airports near this flight route and their unique identifiers/IATA codes.