You decide to fly United Airlines and splurge a few of your 400,000 precious miles to upgrade to a business class seat. After ...
The 737-900ER’s deployment will be similar ... Both versions have 20 seats in first class, 29 Delta Comfort+ seats, and 150 main cabin seats.
The 737-900ER is not part of the newer Max fleet but has the same optional door plug design that allows for the addition of an extra emergency exit door when carriers opt to install more seats.