(Reuters) - Boeing's West Coast factory workers walked off the job early on Friday after they unanimously rejected a contract, halting production of the company's best-selling 737 MAX jet.

The planemaker has more than 4,700 of the jets on order, with Southwest Airlines, United Airlines, and Lion Air the top three customers awaiting deliveries, according to aviation data provider Cirium.

Below is a rundown of some of the biggest known customers waiting for their MAX jets, as per Cirium data.

Airline Number of 737 MAX jets on order (all

variants included)

Southwest Airlines 472

United Airlines 327

Lion Air 229

Akasa Air 203

Ryanair 190

Air India & Air India 156

Express

American Airlines 152

SpiceJet 144

FlyDubai 127

Avolon 107

(Compiled by Shivansh Tiwary in Bengaluru; Editing by Sriraj Kalluvila)