There are four kinds of airport.
#1 International. The largest, busiest airports, taking flights from around the world. Usually has a very long runway. Eg:Los Angeles International airport is the second largest airport in the world.
#2 Regional. An airport that takes flights from around country/continent. Eg:Nanaimo Regional isn't the busiest airport around, but it'll get you around the continent.
#3 Local. The second smallest airport, usually has average facilities, only takes local flights. Eg:Qualicum Beach Local will take you as far as Vancouver and up-island, but thats it.
#4 Airstrip. Smallest of all airports, usually doesn't have normal airport facilities and can take only small aicraft. Eg:Tofino Airstrip has no facilities, but planes do land there.
Urban Dictionary