Peak Design Travel Backpack 30L × 
Frontier Airlines personal item
No.
Bag 20.9 x 13 x 7 in · Rule 18 x 14 x 8 in · medium confidence
Bag reviewed 2026-05-28 · Rule reviewed 2026-05-28
Fit proof
Height
Over 2.9 in
Width
+1 in
Depth
+1 in
Rendered to scale from the reviewed dimensions above. Packed shape and gate enforcement can still change the outcome.
Why this answer
Peak Design Travel Backpack 30L is larger than the published personal-item dimensions. Pick a smaller alternative for this airline rule.
The selected rule is 18 x 14 x 8 in and the bag record is 20.9 x 13 x 7 in.
Next step
Peak Design Travel Backpack 30L is not a strong match for Frontier Airlines's personal item rule. Use the alternatives below first, then review merchant 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