Jeremy Flint has a good tip:
If you are traveling somewhere, and need directions from an airport to a hotel, house, or anywhere, don’t worry if you don’t have the exact address of the airport.
Just take a look at your ticket, get the 3-letter call sign for the airport, then head to Google Maps. Enter the call sign into the search field, and it will center the map on the airport for you.
Here is his example.