Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bangkok to Santiago de Compostela as you normally would.
For a flight from Bangkok to Santiago de Compostela, you will be flying into Santiago de Compostela. Santiago de Compostela (SCQ) is just 10.6 km from the centre vof the city. Santiago de Compostela is the only Santiago de Compostela airport and it handles 0 inbound flights from Bangkok per day. 0 airlines have flights to Santiago de Compostela from Bangkok on a regular basis.
On average you can expect to pay ฿21,628 for a flight from Bangkok to Santiago de Compostela. The cheapest flight overall is ฿21,628 while the most popular route, (Bangkok Suvarnabhumi - Santiago de Compostela) is currently priced at ฿49,277.