Southwest Airlines Co. announced today that they ordered 208 new Boeing 737 aircraft with a value of nearly $19 billion. The airline, which operates an all-Boeing fleet, placed a firm order for 150 of the 737 Max, and 58 of the next-generation 737s.

Last month, Boeing said Indonesia’s Lion Air committed, but hasn’t finalized, a deal to buy 230 Boeing 737s. Lion Air also has options for 150 more planes, bringing the deal’s total potential value to $35 billion. Emirates Airlines also ordered $18 billion worth of 777s in November.

Both deals came shortly after Boeing finally began delivering its two newest planes, the next-generation 787 and the latest version of the iconic 747. Boeing produces about one 737 every day from its plant in Renton, Wash. It is raising that amount to 42 per month by 2014.

Boeing says Southwest is the first customer to finalize an order for the 737 Max. Including the order talked about above. Boeing now has orders or commitments from 13 customers for more than 900 of the new model.

Boeing shares rose 66 cents to $71.56 in premarket trading on the news of the new orders.