Your fit result

Does Peak Design Travel Backpack 30L 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

Peak Design Travel Backpack 30L

Does not fit

Peak Design Travel Backpack 30L is larger than the published personal-item dimensions. Pick a smaller alternative for this airline rule.

Fit proof

1 in tightest spare room

Does not fit

Does not fit. length over by 2.9 inches, width spare room 1 inches, depth spare room 1 inches.

Rendered to scale

Does not fit. Largest overflow: 2.9 in.

Height

Over by 2.9 in

Bag 20.9 in / Rule 18 in

Width

Spare room +1 in

Bag 13 in / Rule 14 in

Depth

Spare room +1 in

Bag 7 in / Rule 8 in

Data status

Source-linked dimensionsAirline-published rule

Rendered from the dimensions shown here. Airline staff and packed shape can still affect the real-world outcome.

Fit is rendered from verified dimensions using a shape profile.

Bag: 20.9 x 13 x 7 in
Rule: 18 x 14 x 8 in
Risk: 92/100
Confidence: medium

Margins: length -2.9 in, width 1 in, depth 1 in.

Main issue: length by 2.9 in.

Bag data

Source-linked dimensions

Last reviewed: 2026-05-28
Dimension confidence: medium
Primary source: retailer

Airline rule data

Airline-published rule

Last reviewed: 2026-05-28
Rule confidence: high
Airline rule: Airline baggage page

View bag page View airline rules Suggest correction

Better-fitting alternatives

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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 page Fit page

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 page Fit page

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 page Fit page