Use code: SUMMERSEAT
This code will take 50% off all reserved flights in the app.
Burbank-Concord (August)
Burbank-Oakland (August)
Burbank-Las Vegas (August, September)
Orange County-Las Vegas (August, September)
I flew JSX about 2 years ago and had a great flight with them. Only 30 seats in the plane, leaves from private terminals, no need to come early etc.
BlackBird also has a referral program to refer a member and get $300 credit when the referred member takes their first flight, and gives the member $100 of their first flight. Not sure if both promos combine or if it works on flights that are operated by JSX.