Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Galway to Bremen as you normally would.
Bremen (BRE) is the airport you will fly into if you book a flight from Galway to Bremen. You should not have trouble finding flights to Bremen from Galway; the airport handles an average of 0 inbound flights from Galway per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Bremen airport from Galway. It is only a 2.1 mi journey from Bremen (BRE) to Bremen’s city center.