Lowest age at which a child is allowed to fly without being UM:

No data: Air India; Air Sahara; JAL; Qatar; Singapore?; Silkair; Air Astana; Air Pacific; China Southern; Malaysia Airlines; Pakistan International; Royal Brunei; Sri Lankan; Air Plus Comet; First Choice; Lauda Air; African Safari; Air Seychelles; Air Zimbabwe; Ghana International; Israir; Kuwait Airways; Tunisair

12: Aer Lingus (Form of Indemnity required); Air Canada; Jet Airways?; Kingfisher; Paramount; Air New Zealand; AirTran; All Nippon Airways; Asiana (international); British Midlands; Open Skies; Cathay Pacific; El Al; Emirates; Finnair; Air France; Hawaiian (inside Hawaii); Lufthansa; Swiss; Austrian; LOT; Qantas; SAS; Air Baltic; Estonian Air; Southwest; Thai; THY?; United; Westjet; Virgin Blue; Air Asia; Air Austral; Aircalin; Air China; Air Tahiti Nui; China Airlines; Eva Air; Garuda; Hong Kong Airlines; Pacific Blue; Philippine Airlines; Polynesian Blue; Vietnam Airlines? Aegean Airlines? Air Berlin; Czech Airlines; Flybe; Iberia; Icelandair; Iceland Express; JAT Airways; Luxair; Malev; Meridiana; Monarch; Olympic; Sabena; Spanair; Tarom; TAP; Ukraine International? Air Arabia; Air Namibia; Ethiopian Airlines; Etihad; gulf Air; Iranair? Middle East Airlines?; Royal Air Maroc; Royal Jordanian not to USA and Canada; Saudi Airlines; South African Airways; Aerolineas Argentinas?; Air Caraibes?; Caribbean Airlines

13: Alaska Airlines; Asiana (domestic); British Airways; JetBlue; Korean (international); Adria? Croatia? China Eastern? Aeroflot? Air Malta? Cyprus Airways? Air Algerie? Air Mauritius? Egyptair? Mahan Air? Oman? Avianca?

14: Alitalia; Korean (domestic); Easyjet; Ryanair; Thomsonfly; Aeromexico

15: American; Continental; Delta; KLM; Hawaiian (outside Hawaii); Midwest; Northwest; Jetstar; Frontier; US Airways; Air Jamaica; Copa

16: Virgin; Britannia Airways; Thomas Cook

18: Royal Jordanian to USA and Canada