Well, Joe and Larry say:
"This bag meets all the new airline sizing requirements! "
So I will say yes, it will work.
FYI:
Domestic Airline/Flight Policies - Carry On Luggage
Airline
Allowance
Max wt per piece
Max size per piece
AirTran
1 plus 1 personal item
55"
Alaska and also Horizon
1 plus 1 personal item
10"H x 17"W x 24"L
Aloha 1 plus 1 personal item
(sometimes on interisland flights - none!)
20lbs 44" = 8" x 14" x 22"
9" x 15" x 25"
but on L1011 is only 9" x 13.5" x 19"
Continental
1 plus 1 personal item
40lbs 51"
Delta
1 plus 1 personal item
40lbs All items must each fit in a 'Size wise' template, approx 22" x 14" x 9"
Frontier
1 plus 1 personal item
35lbs 49"
Hawaiian
1 plus 1 personal item
25lbs 45" or 22" x 14" x 9"
Northwest
1 plus 1 personal item
40lbs
22" x 14" x 9"
Southwest
1 plus 1 personal item
24" x 16" x 10"
Spirit
1 piece, no personal items
40lbs 22" x 13" x 10"
United
1 plus 1 personal item
22" x 14" x 9"
US Airways
1 plus 1 personal item
40lbs combined weight for both
24" x 16" x 10" for overhead
21" x 16" x 8" for underseat