If you are having a destination wedding, there are two things to consider. One, will you hire a local photographer in your area to travel to your wedding, or two, will you hire a photographer at your wedding destination.
In addition to the normal rate, some photographers charge a travel fee to compensate for time away from the studio and/or family, and the travel fee can vary. Because a destination wedding is not a one day affair, there are other cost to consider. For instance, roundtrip airfare, car rental (including gas and taxes), hotel accommodations (preferably where the bride will get ready), and meals.
After thinking about the fees you may acquire to hire your local photographer, you may consider hiring a photographer at the wedding destination instead. However, there are some risk to follow with that, so make sure that you do your research on your photographer and that he/she is a reputable photographer.