| Alaska Airlines | 100.00 USD | Unaccompanied minor service fee (ages 5–11) | All fares | U.S. Mainland | per direction | Source (www.alaskaair.com) | Last verified: 2025-12-19 |
| Alaska Airlines | 35.00 USD | Unaccompanied minor service fee (ages 5–11) | All fares | Between Hawaiian Islands | per direction | Source (www.alaskaair.com) | Last verified: 2025-12-19 |
| American Airlines | 150.00 USD | Unaccompanied minor service fee (per direction); additional fare requirements apply | All fares | Varies | per direction | Source (www.aa.com) | Last verified: 2025-12-19 |
| Delta Air Lines | 150.00 USD | Unaccompanied minor service fee; additional fare requirements apply | All fares | Varies | per direction | Source (www.delta.com) | Last verified: 2025-12-19 |
| Frontier Airlines | Not permitted USD | Unaccompanied minor service not offered (children under 15 must be in the same reservation as an accompanying adult); at booking; Not published | All fares | All routes | — | Source (www.flyfrontier.com) | Last verified: 2025-12-19 |
| JetBlue | 150.00 USD | Unaccompanied minor service fee (ages 5–13) | All fares | Nonstop flights only | per direction | Source (www.jetblue.com) | Last verified: 2025-12-19 |
| Southwest Airlines | 100.00 USD | Unaccompanied minor (UM) fee (ages 5–11) | All fares | U.S. Mainland | per direction | Source (www.southwest.com) | Last verified: 2025-12-19 |
| Southwest Airlines | 35.00 USD | Unaccompanied minor (UM) fee (ages 5–11) | All fares | Between Hawaiian Islands | per direction | Source (www.southwest.com) | Last verified: 2025-12-19 |
| Spirit Airlines | 150.00 USD | Unaccompanied minor service fee (ages 5–14); nonstop flights only | All fares | Domestic only | per direction | Source (customersupport.spirit.com) | Last verified: 2025-12-19 |
| United Airlines | 150.00 USD | Unaccompanied minor service fee; full adult fare also required | All fares | Varies | per direction | Source (www.united.com) | Last verified: 2025-12-19 |