CABINWARDAmerican Airlines · Airbus A321

Airbus A321

2 configurations on record at American Airlines. The same aircraft name can fly in more than one layout, so the config code is the truth: check the code on your booking rather than the aircraft name.

A321K — 20C 170MDomestic First 20 + Main Cabin 170A321T — 10F 20J 72MFlagship First Suites 10 + Flagship Business 20 + Main Cabin 72

Which one am I on?

Your booking will not name the configuration. Open the seat map in your confirmation and read the highest row number on it.

Pick a number and the configuration resolves.
A321K
20 Domestic First · 170 Main Cabin
Last row on the map
36
Economy starts at row
8
A321T
10 Flagship First Suites · 20 Flagship Business · 72 Main Cabin
Last row on the map
22
Economy starts at row
11

What differs

A321K20C 170MA321T10F 20J 72M
Domestic First20rows 1-5
Main Cabin170rows 8-3672rows 11-22
Flagship First Suites10rows 1-5
Flagship Business20rows 6-10
Extra legroomnot statednot stated
Total190102

Only the rows that differ are marked. A figure the source never stated reads as not stated, never as zero.

Every figure on the linked pages was read at a named source with the read date shown.