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:


Norwegian Air

Foto: sourceBoeing

Air China

Foto: sourceBoeing

SpiceJet

Foto: sourceBoeing

Southwest Airlines

Foto: sourceSouthwest Airlines

Icelandair

Foto: sourceBoeing

FlyDubai

Foto: sourceBoeing

Air Italy

Foto: sourceAir Italy

TUI

Foto: sourceBoeing

LOT Polish Airlines

Foto: sourceBoeing

AeroMexico

Foto: sourceBoeing

Oman Air

Foto: sourceBoeing

SmartWings

Foto: sourceBoeing

Aerolineas Argentinas

Foto: sourceAerolineas Argentinas

Lion Air

Foto: sourceAP

Corendon Airlines

Foto: sourceFlickr/Anna Zvereva

China Southern (An older Boeing 737-800 is pictured).

Foto: sourceBoeing

Ethiopian Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceBoeing

Air Canada

Foto: sourceAir Canada

Garuda Indonesia

Foto: sourceFlickr/Bathara Sakti

United Airlines

Foto: sourceUnited Airlines

American Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceAmerican Airlines

Xiamen Airlines

Foto: sourceBoeing

WestJet

Foto: sourceWestJet

Turkish Airlines

Foto: sourceBoeing

SCAT Airlines

Foto: sourceBoeing

China Eastern (An older Boeing 737-800 is pictured.)

Foto: sourceBoeing

Shanghai Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/byeangel

Shenzhen Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/Byeangel

Jet Airways

Foto: sourceBoeing

Okay Airways

Foto: sourceBoeing

GOL

Foto: sourceBoeing

SilkAir

Foto: sourceSilk Air

S7 Siberia Airlines

Foto: sourceBoeing

Copa Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/Tomas Del Coro

Lucky Air (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/Ya, saya inBaliTimur

Sunwing Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/Tomas Del Coro

Hainan Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/byeangel

Mauritania Airlines International (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/Eric Salard

Shandong Airlines (An older Boeing 737-800 is pictured.)

Foto: sourceFlickr/byeangel

9 Air (No photo available)

Foto: sourceBoeing

Fiji Air

Foto: sourceBoeing

Enter Air (An older Boeing 737-800 is pictured.)

Foto: sourceWikimedia Commons/Creative Commons

Cayman Airways (No photo available)

Foto: sourceBoeing

Comair

Foto: Comair's first Boeing 737 MAX in British Airways livery.sourceComair