Your fit result

Does Thule Aion Travel Backpack 28L fit Southern Airways Express?

This page compares the bag dimensions we have against one published airline rule, renders the fit to scale, and keeps the caveats visible.

Personal item

Thule Aion Travel Backpack 28L

Does not fit

Thule Aion Travel Backpack 28L is larger than the published personal-item dimensions. Pick a smaller alternative for this airline rule.

Visual sizer

Bag vs airline rule

Does not fit

Does not fit. Largest overage: 4 in.

Height

Over by 4 in

Bag 18.5 in / Rule 14.5 in

Width

Spare room +1 in

Bag 11 in / Rule 12 in

Depth

Spare room +0.9 in

Bag 9.1 in / Rule 10 in

info: Items above 14.5 in W x 12 in H x 10 in L or over 15 lb must be checked or gate-checked; carrier has sole discretion for cabin suitability.

Bag: 18.5 x 11 x 9.1 in
Rule: 14.5 x 12 x 10 in
Risk: 92/100
Confidence: high

Margins: length -4 in, width 1 in, depth 0.9 in.

Main issue: length by 4.0 in.

Bag data

Audited dimensions

Last reviewed: 2026-05-28
Dimension confidence: high
Primary source: manufacturer

Airline rule data

Airline-published rule

Last reviewed: 2026-06-15
Rule confidence: high
Airline rule: Airline baggage page

View bag details View airline rules Suggest correction

Better-fitting alternatives

Personal item

Rick Steves Civita Day Pack

Fits

Rick Steves Civita Day Pack fits the published personal-item dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag: 14 x 11 x 5.5 in
Rule: 14.5 x 12 x 10 in
Risk: 8/100
Confidence: high

Margins: length 0.5 in, width 1 in, depth 4.5 in.

Bag details

Personal item

Dagne Dover Landon Carryall Medium

Fits

Dagne Dover Landon Carryall Medium fits the published personal-item dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag: 14.5 x 7.5 x 9 in
Rule: 14.5 x 12 x 10 in
Risk: 8/100
Confidence: high

Margins: length 0 in, width 4.5 in, depth 1 in.

Bag details

Personal item

CabinZero Classic Cabin Backpack 28L

Risky

CabinZero Classic Cabin Backpack 28L is over the published personal-item dimensions, but the soft construction may make it a borderline option if lightly packed. Treat this as a fee-risk result.

Bag: 15.4 x 11.6 x 7.9 in
Rule: 14.5 x 12 x 10 in
Risk: 55/100
Confidence: high

Margins: length -0.9 in, width 0.4 in, depth 2.1 in.

Main issue: length by 0.9 in.

Bag details