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Does Mystery Ranch Catalyst 26 fit Allegiant Air?

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

Mystery Ranch Catalyst 26

Does not fit

Mystery Ranch Catalyst 26 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: 2.1 in.

Scaled fit visualizationDoes not fit. Largest overage: 2.1 in.Bag size20.1 x 11.4 x 9.8 inRule size18 x 14 x 8 inRule width 14 inRule length 18 inBag width 11.4 inBag length 20.1 inDepth: Bag 9.8 in / Rule 8 in

Does not fit. Largest overage: 2.1 in.

Height

Over by 2.1 in

Bag 20.1 in / Rule 18 in

Width

Spare room +2.6 in

Bag 11.4 in / Rule 14 in

Depth

Over by 1.8 in

Bag 9.8 in / Rule 8 in

  • warning: Bag dimensions are not directly manufacturer-published for this launch record.
  • info: Personal items not fitting under seat may be charged
Bag
20.1 x 11.4 x 9.8 in
Rule
18 x 14 x 8 in
Risk
92/100
Confidence
high

Margins: length -2.1 in, width 2.6 in, depth -1.8 in.

Main issue: length by 2.1 in, depth by 1.8 in.

Bag data

Source-linked dimensions
Last reviewed
2026-05-29
Dimension confidence
high
Primary source
retailer

Airline rule data

Airline-published rule
Last reviewed
2026-05-28
Rule confidence
high
View bag detailsView airline rulesSuggest correction

Better-fitting alternatives

Personal item

Osprey Daylite Expandable Travel Pack 26+6

Fits

Osprey Daylite Expandable Travel Pack 26+6 fits the published personal-item dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
17 x 13 x 6 in
Rule
18 x 14 x 8 in
Risk
8/100
Confidence
high

Margins: length 1 in, width 1 in, depth 2 in.

Bag details

Personal item

CabinZero Classic Cabin Backpack 28L

Fits

CabinZero Classic Cabin Backpack 28L fits the published personal-item dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
15.4 x 11.6 x 7.9 in
Rule
18 x 14 x 8 in
Risk
8/100
Confidence
high

Margins: length 2.6 in, width 2.4 in, depth 0.1 in.

Bag details

Personal item

CALPAK Luka 15 inch Laptop Backpack

Fits

CALPAK Luka 15 inch Laptop Backpack fits the published personal-item dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
16 x 12 x 7 in
Rule
18 x 14 x 8 in
Risk
8/100
Confidence
high

Margins: length 2 in, width 2 in, depth 1 in.

Bag details