Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philippines to Gambia as you normally would.
Great question - MNL to BJL just means Manila Ninoy Aquino Intl Airport to Banjul Yundum Intl Airport. Now you’ll know what these unique codes when you look for flights! Cebu City Mactan Intl Airport (CEB), Angeles City Clark Intl Airport (CRK), Davao City Francisco Bangoy Airport (DVO), Kalibo Airport (KLO), Panglao Bohol–Panglao Intl Airport (TAG) are some additional IATA codes for airports related to your trip.