"The 737 MAX 10 will provide even more flexibility to United's route schedule and will bring to their operation the best economics of any airplane in the single-aisle segment".
During the past several weeks, Blue Air has already taken delivery of three of the six Boeing 737-800s from ALC and has placed them into their flight operations for their 2017 summer schedule.
SpiceJet on Monday signed an MoU with Boeing for 40 B737 MAX aircraft.
It would seat between 220 and 270 passengers for flights of up to 5,200 nautical miles, or just over 10 hours.
Norwegian added an order for two 737 MAX 8s, worth $225 million, to its existing order for the MAX.
Changes to the cabin will allow airlines to add another 80 seats to the planes which carry around 500 passengers on average without reducing comfort.
Aviation Capital Group, a leasing company, ordered 10 737 Max 10s for $2.49 billion.
These include 20 new orders for the 737 Max 10 and conversion of 20 of the low-priced carrier's 737 Max 8 aeroplanes of its current order to 737 Max 10s.
Prior to the lease, Blue Air operated a fleet of 25 Boeing 737 aircraft.
SpiceJet is scheduled to take the delivery of its first 737 MAX in 2018.
The plane will be entirely made of carbon fiber composite material, like the 787 Dreamliner, said Mike Delaney, Boeing's vice president of airplane development at a presentation in Paris. The Oslo-headquartered carrier also operates a combined fleet of more than a dozen 787-8 and 787-9 Dreamliners and has a further 19 unfilled orders for 787-9s.
"As a lessor, we are committed to provide our global customer base with technologically-advanced aircraft", said Ahmad Alzabin, chief executive officer and vice-chairman, ALAFCO. Ryanair also has 100 options on what Boeing's announcement called the "higher capacity 737 MAX 8", which presumably is what the company once dubbed the 737-200, a modified MAX 8 that Boeing specifically designed for Ryanair.