OurAirports is getting better at filtering. While the maps still show everything, you can now filter most of the lists to show any of the following:
- active land airports,
- airports with scheduled airline service,
- seaplane bases, or
- everything, including heliports, closed airports, etc.
(I figured there’s no point showing only heliports, since helicopters can land at regular airports as well).
Here’s a list of airports in Western Australia with scheduled airline service, and here’s a list of the closest seaplane bases to Edmonton, Alberta.