The space between the seats in rows 7 to 8 of the Prestige (C) section is 132 cm (52 inches), and the seat width is 53 cm (21 inches). In the Economy Class (Y) section, rows 28 to 50, the space between the seats is 79 cm to 81 cm (31 inches to 32 inches), and the seat width is 45 cm (17.8 inches).

Seat dimensions on the Boeing 737 MAX 8 vary by airline, but they generally follow a standard narrow-body profile. In Economy Class, the average seat width is between 16.6 and 17.8 inches, with a seat "pitch" (the distance between rows) typically ranging from 30 to 32 inches. For instance, American Airlines and WestJet often configure their Economy seats with a 30-inch pitch. Premium Economy or "Extra Comfort" sections usually offer a wider pitch of 33 to 36 inches. In Domestic First Class, seats are significantly larger, with a width of approximately 21 inches and a pitch of 37 to 38 inches. While the 737 MAX features the "Boeing Sky Interior" which makes the cabin feel more spacious, the actual seat dimensions remain competitive with, and often slightly tighter than, the rival Airbus A320neo family.