I’ve been involved with a group in Kenya for several years through my church and the team I went with was through my school and church teaming up. My dad had gone 2 times prior to my going, so I already had had connections for a while.
I definitely think its something to pray about. God will provide you with opportunities if you’re called to go. There’s many different organizations you can look into just by googling it. Personally, I don’t think I’ll ever go on another short term overseas trip again. The next trip I participate in will be over a period of a few months in which I will work myself to the bone in every opportunity and situation given. I also suggest you go on multiple outreach trips right in your own town, there’s a lot you can do even right here at home. Whatever you do, seek God about it all first and He will show you where He has called you :) God bless!