September 11th 2001: which of the four planes was hijacked first?

American Airlines - Boeing 767

Explanation:

On September 11, 2001, at 8:45 a.m. an American Airlines Boeing 767 loaded with 20,000 gallons of jet fuel crashed into the north tower of the World Trade Center in New York City.

The first two planes were flown into the towers of the World Trade Center in New York City

Explanation:Two of the planes were flown into the twin towers of the World Trade Center in New York City, a third plane hit the Pentagon just outside Washington, D.C., and the fourth plane crashed in a field in Pennsylvania.

I hope that this answer will help your question.

cornfield (filler filler filler filler ignore this filler filler)