Originally Posted by
iztok
seatguru.com is your friend.
+1
The 321 has more seats with extra legroom in Y.
Originally Posted by
flight62
More seats, more exits, 1 more bathroom, and an added f/a. Galley's are the same. Newer 321's have no partition at 2L.
The 321 has four more F seats than the 320. If you're a US elite you'll have a greater chance at an upgrade.