Does the Briggs & Riley Slim Expandable Backpack fit Allegiant Air?
FitsBag
40.7 × 26.7 × 15.2 cm
Empty 1 kg
Bag pageAllegiant Air carry-on
55.9 × 40.6 × 25.4 cm
18 kg
Verified 2026-10-03
Airline pageFAQ
Does the Briggs & Riley Slim Expandable Backpack fit Allegiant Air?
Fits. Sides are sorted longest to shortest and compared with the airline limit the same way, so orientation does not matter.