The two primary sources of mission trips are either national missionary organizations or local churches.
A few people venture out on their own but that’s not recommended. Whichever way you choose, your first goal will be to go as a helper to serve others and the Lord. There are quite a few national organizations. You can do an internet search for short-term mission trips and you will find quite a few.
There is a great website with many resources. They have approximately 1700 trips listed with 113 organizations. The website is www.shorttermmissions.com. Most organizations in their trip fee include housing, food, and transportation to and from the airport. There will usually be an extra charge for health insurance while on the trip and your airfare. If you pay your fee and those additional expenses, everything else for the trip is covered.
When choosing an organization, remember that you’re not going on a vacation. We all have different roles to play on a short-term mission. They try to match your skills to their needs on their trips. Each organization will offer many trips to many countries. Most of the time you can find most of this information on their website. The website will tell you what kind of work they’ll be doing and you should be able to decide if you have those skills.
Another point to consider with an organization is their vision and belief system. I’m keeping this handbook non-denominational, but there are differences in our Christian doctrine. Read their statements of faith in order to see if you can work alongside them.