Curious which airlines you can contract for what aircraft stand?
This is a small list for airlines include in the game (so no modded airlines):
Small:
CLM
Forrest Air
Goose Wings
Maple
Stripe Air
SkyFly
Sky Link
Medium:
Air Strada
Allure
Atom Air
CLM
Crown
Fly Penguin
Forrest Air
Goose Wings
Havana
Maple
Nordic
OK Air
Olympus
Trinity Aviation
Tulip Airlines
Swiftly
Wildcat Air
Zoom
Both:
CLM
Forrest Air
Goose Wings