How big is a Boeing 747 compared to a 737?

On the left, we have the Boeing 737, represented by one lovely Labrador Retriever… . . . …on the right, we have one Boeing 747 engine, represented by an adorable Akita. Well, I might have exaggerated a little… but you get the point: The Boeing 737 is larger than a Boeing 747's engine. read more

Although the 737 has grown over the years, the 737 and 757 remain in different size classes. Both models can be ETOPS certified, although the 757 is more often used in long flights. At the time the 757 was introduced (in the 80's), the 737 classic series was current. read more