This is an easy VFR flight from Key Largo to Key West, the southermost point of the continental United States.
You'll start in Key Largo and head southwest. The islands are all in a line, so you can just keep going along the line of islands until you run out of land! The airport will be at the end.
There's a larger airport you'll see when you're nearing the end of the flight, but your destination is actually the smaller airport behind it. Fly all the way to the Key West at the end!