Timbuk2 Authority Laptop Backpack Deluxe Medium × 
Frontier Airlines personal item
Yes.
Bag 17.9 x 12.8 x 7.3 in · Rule 18 x 14 x 8 in · high confidence
Bag reviewed 2026-05-28 · Rule reviewed 2026-05-28
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Fit proof
Height
+0.1 in
Width
+1.2 in
Depth
+0.7 in
Rendered to scale from the reviewed dimensions above. Packed shape and gate enforcement can still change the outcome.
Why this answer
Timbuk2 Authority Laptop Backpack Deluxe Medium fits the published personal-item dimensions for this rule. Still measure the packed bag, including handles and wheels.
The selected rule is 18 x 14 x 8 in and the bag record is 17.9 x 12.8 x 7.3 in.
Next step
Timbuk2 Authority Laptop Backpack Deluxe Medium fits the reviewed Frontier Airlines personal item rule on the available dimensions. Confirm color, stock, and retailer dimensions before buying.
Frontier AirlinesFits this rule with 1 inches of tightest margin.
1 in spare on height, the tightest side
17 x 13 x 6 in
Fits this rule with 0.1 inches of tightest margin.
0.1 in spare on depth, the tightest side
15.4 x 11.6 x 7.9 in
Fits this rule with 1 inches of tightest margin.
1 in spare on depth, the tightest side
16 x 12 x 7 in