Does the ibiyaya JetPaw Expandable Backpack fit American Airlines?

No — the ibiyaya JetPaw Expandable Backpack (18 × 12 × 12 in) does not fit American Airlines's 18 × 11 × 11 in under-seat limit.

18 × 12 × 12 in external

Too big against American Airlines's 18 × 11 × 11 in limit

See on Amazon →

Affiliate link — we may earn a small commission at no extra cost to you. It never changes our specs or which carriers we list.

18 × 12 × 12 in is over the 18 × 11 × 11 in limit.

Last verified 2026-07-23 · matched to the published American Airlines limit. Every fit is against the published maximum; real under-seat space varies by aircraft (why).

Full American Airlines shortlist: all carriers that fit American Airlines → · this carrier on other airlines: ibiyaya JetPaw Expandable Backpack specs → · American Airlines rules & fees: American Airlines pet policy →