[w33ble]

Monetizing something isn't the only reason to do it. And you're right too; just because you started something doesn't mean you have to finish it either.

That said, I don't know if any of the travel sites or airlines offer any affiliate programs, but that could be an easy way to monetize your site. Show users the best airport options on your end with pricing from your affiliate sites and bounce them to the airline/travel site with your affiliate code in tow if they click on the flight.

As for the idea, I've personally wasted some time scouring for airports on Google maps and then looking up the rates on various travel sites. Sounds like your site could have saved me some time for sure.