Two Boeing 737 MAX airliners have crashed since October — here are the airlines that fly the plane (BA, AAL, UAL, LUV)

• The Boeing 737 MAX is the fastest-selling plane in company history.
• Boeing has 4,699 737 MAX orders on the books with more than 200 delivered to customers.
• The plane's major customers include Southwest, American, United, Ryanair, Norwegian, and China Southern. 
• The 737 MAX currently operates with more than 42 airlines around the world.

The Boeing 737 MAX entered service in 2017 to great fanfare. The jet is the latest in Boeing's long line of hot-selling 737 family of narrow-body airliners. The 737 MAX has earned praise for its advanced aerodynamics and fuel-efficient engines.

In fact, the 737 remains the best-selling airliner of all time, while the new MAX variant quickly became quickest selling plane in Boeing history. Incredibly, Boeing has sold roughly 15,000 737s since the 1960s, nearly a third of which is the MAX variant. In total, more than 200 737 MAX aircraft have been delivered to airlines and leasing companies around the world. 

Boeing has 4,699 outstanding orders for the 737 MAX which represents 80% of the company's entire order backlog. 

On Sunday, Ethiopian Airlines Flight ET302 crash shortly after taking off from Addis Ababa Bole International Airport. The crashed killed all 157 passengers and crew on board the four-month-old plane.

It's the second nearly brand new Boeing 737 MAX airliner in recently be involved in a fatal crash. In October, Lion Air Flight JT610 crashed in the Java Sea shortly after taking off from Jakarta, Indonesia, killing all 189 people on board.

Both crashes are currently under investigation.

Read More: The Boeing 737 Max plane, which has been involved in 2 deadly crashes in 5 months, is used by American Airlines, Southwest, and United. Here's how to find out if you're flying on one.

The 737 MAX's major US customers include Southwest, American, and United. The plane is also in operation around the world from Air Italy to China Southern.

According to data from Airfleets.net, the 737MAX is currently in operation with more than 40 airlines around the world. 

Here's a closer look at the more than airlines that fly the Boeing 737 MAX:

SEE ALSO: The 20 biggest airlines in the world, ranked

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Norwegian Air

Air China

SpiceJet