Being a frequent traveller, (and often travelling to new places, and places that are served by multiple airports) I was looking for a site that would help me figure out the closest airport to the city I was travelling to.  I found a really great site in

If you travel for business OR pleasure, this is a site that you should DEFINITELY add to your travel favorites both for long-term planning, and short term reference.

From their website description:

“This site provides an online travel calculator to help you find answers quickly.  If you’re planning a trip, you can measure things like travel distance and travel time. To keep your travel budget under control, use the travel cost tools.

You can also browse information on flights including the distance and flight time.  Or use the section on driving to compare the distance by car, or the length of your road trip.

Finally, use the map below or the links on the lower right to lookup an airport, hotel, city, state, country, or zip code. You can use the bookmark button at the top to save any page, or try searching for your exact destination.”