I am flying from Seattle to Las Vegas on Alaska Airlines. I am definitely too large for a single economy seat. According to the charts, economy seats are 17" wide and first class are 21" wide. That extra 4" doesn't sound like much. I have the option of using 50,000 miles to get two economy seats or one first class seat, and I can't decide what to do. Someone told me that even though the seats in first class are only 4" wider, that there is also room BETWEEN the seats in first class, so any of my "overflow" might not impose on the person next to me.
Can anyone share some knowledge? Thank you!