Hello .
Gambia has this effect on people that once visited you cant stay away. Since my first visit many years ago i cant keep away nd i have yearly extended visit .
Flights are very expensive when compared with other destinations but i would like to suggest that you google Skyscanner, lastminute.com, and tripadvisor. The Gambia Experience fly all year but expensive. Thomas has good deals but will not be operating till November.
Good luck in all that you are planning.