The free under-seat personal-item allowance for every airline we have verified against its own baggage page — including the ones that publish no number at all.
| Airline | Region | Free personal item |
|---|---|---|
| American Airlines | US | 18 × 14 × 8 in |
| Delta Air Lines | US | No size published |
| United Airlines | US | 17 × 10 × 9 in |
| Alaska Airlines | US | No size published |
| JetBlue | US | 17 × 13 × 8 in |
| Southwest Airlines | US | No size published |
| Frontier Airlines | US | 18 × 14 × 8 in |
| Allegiant Air | US | 18 × 14 × 8 in |
| Air Canada | Canada | 17 × 13 × 6 in |
| WestJet | Canada | 16 × 13 × 6 in |
| British Airways | Europe | 15.7 × 11.8 × 5.9 in |
| Ryanair | Europe | 15.7 × 11.8 × 7.9 in |
| easyJet | Europe | 17.7 × 14.2 × 7.9 in |
| Lufthansa | Europe | 15.7 × 11.8 × 5.9 in |
| Air France | Europe | 16 × 12 × 6 in |
| KLM | Europe | 15.7 × 11.8 × 5.9 in |
| Emirates | Middle East | No size published |
| Turkish Airlines | Europe | 15.7 × 11.8 × 5.9 in |
| Qantas | Oceania | No size published |
| Singapore Airlines | Asia | 15.7 × 11.8 × 3.9 in |
| Aer Lingus | Europe | 15.5 × 11.5 × 8 in |
| Virgin Atlantic | Europe | No size published |
| ANA (All Nippon Airways) | Asia | 15.7 × 11.8 × 7.9 in |