Personal Item Size Limits — Every Airline
A personal item is always free. Here are the exact dimensions for the under-seat bag on every major airline.
| Airline | Max size (in) | Max size (cm) |
|---|---|---|
| Delta Air Lines | 17 × 13 × 8 in | 43 × 33 × 20 cm |
| United Airlines | 17 × 10 × 9 in | 43 × 25 × 23 cm |
| American Airlines | 18 × 14 × 8 in | 46 × 36 × 20 cm |
| Southwest Airlines | 18.5 × 13.5 × 8.5 in | 47 × 34 × 22 cm |
| Alaska Airlines | 17 × 13 × 8 in | 43 × 33 × 20 cm |
| JetBlue Airways | 17 × 13 × 8 in | 43 × 33 × 20 cm |
| Frontier Airlines | 18 × 14 × 8 in | 46 × 36 × 20 cm |
| Spirit Airlines | 18 × 14 × 8 in | 46 × 36 × 20 cm |
Key fact: United is the most restrictive at 10 in wide (vs 13–14 in for most others). Southwest is the most generous at 18.5 × 13.5 × 8.5 in. Personal items are always free — even on Basic Economy.
Related: Carry-On Checker · Checked Bag Fee Calculator · Carry-On vs Checked Bag