Also
American Airlines Partners With BLADE and The Private Suite for an Ultra-Lux Experience by JT Genter on The Points Guy blog.
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This is available for departure or arrival at LAX and JFK and can be packaged with Five Star Service and Flagship First Check-in.
SFO Helicopter Airways offered San Francisco Bay Area flights to those those connecting to or from SFO or OAK from several Bay Area locations. I used them a couple of times to connect quickly between SFO and OAK. Nothing really innovative for AA or JFK, but certainly another service AA can offer its highest flyers.