Looks like the dataset is limited to maybe some size threshold? There are a lot of regional airports missing. Cool interface! Would be cool (but maybe computationally prohibitive) to optionally use driving distance instead of as-the-crow-flies distance.
The criteria are interesting. When you’re hopping around New England it will show Bridgeport, CT and Taunton, MA which don’t have commercial service and they’re trying to shut down, while leaving off Martha’s Vineyard, MA and Worcester, MA which do have commercial service.
