02-16-2010
05:57 AM
The average airplane seats measure 17.2 to 18 inches across (43.68 to 45.72 cm). This means anyone with more than a 36 inch (91.44 cm) hip measurement is likely to feel a little squeezed upon sitting down. There are some exceptions. Midwest Express, for instance has a 21-inch (53.34 cm) seat width. First class and sometimes business or executive class flights may offer wider seats.
"Southwest's seats measure 17 1/4 inches across." http://www.usatoday.com/travel/news/2002/2002-06-20-southwest-money-cover.htm
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