Comment by vojnovski

Opentraveldata (https://github.com/opentraveldata/opentraveldata) is generally a great source for travel related data, based mostly on Geobases and Wikipedia. Its OAG extract is a bit old, but all airport data (and more) can be found in https://github.com/opentraveldata/opentraveldata/blob/master..., which is refreshed on an almost daily basis. There are other data sources in the same folder.

Also, https://github.com/opentraveldata/geobases is a fun way to play around with Geonames/Optd data.