CABINWARDUnited Airlines · Boeing 787-9

Boeing 787-9

2 configurations on record at United 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.

78L — 64J 35W 123MUnited Polaris 64 + Premium Plus 35 + Economy 12378P — 48J 21W 188MBusiness 48 + Premium Plus 21 + Economy 188

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.
78L
64 United Polaris · 35 Premium Plus · 123 Economy
Last row on the map
44
Economy starts at row
30
78P
48 Business · 21 Premium Plus · 188 Economy
Last row on the map
57
Economy starts at row
30

What differs

78L64J 35W 123M78P48J 21W 188M
United Polaris64rows 1-17
Premium Plus35rows 20-2421rows 20-22
Economy123rows 30-44188rows 30-57
Business48rows 1-12
Extra legroomnot statednot stated
Total222257

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.