Connecting flights for UM-s:

No data - Air India; Air Sahara; JAL; Qatar; Silkair; Air Astana; Air Pacific; China Southern; Malaysia; Pakistan International; Royal Brunei; Sri Lankan; Air Plus Comet; First Choice; Lauda Air; Luxair; Olympic; Air Caraibes

No UM services - Aer Lingus; Jetstar; Air Asia; Britannia Airways; Easyjet; Monarch; Ryanair

No connections - Air Canada; Open Skies; Jetblue; Southwest; Virgin Blue; Westjet; Meridiana

No mention of restrictions: Kingfisher; Alitalia; ANA (connect for details); Asiana; Air France; KLM; Korean (explicitly no restrictions); Midwest; Lufthansa; Swiss; Austrian; LOT; Adria Airways; Croatia Airlines; Qantas; SAS; Air Baltic; Singapore; Thai; THY; Aircalin; Air China; Air Tahiti Nui; China Airlines; China Eastern; Hong Kong Airlines; Pacific Blue; Philippines Airline; Polynesian Blue; Aegean Air; Air Berlin; Air Malta; CSA; Iberia; Icelandair; Iceland Express; JAT

Allowed: Jet Airways (under 4 hour connections to Jet flights anywhere in the city and to any other airline in the same terminal); Paramount Airways (no overnight stays); Air New Zealand (under 2 hours domestic, same day international); British Midlands (ground transfers, overnight and over 4 hour connections forbidden, except connecting in US and Canada); Cathay Pacific (no connections over 5 hours or between airports); El Al (no transfer between airports, airport-specific restrictions); Emirates (no transfer between airports, connection time up to 8 hours in Dubai, 4 hours elsewhere); Finnair (no overnight stops); Estonian Air (parents must arrange for escorts if the itinerary includes overnight stop or transfer between two airports); Virgin (connection time up to 4 hours, no transfer between airports); Air Austral; Eva Air (connection time up to 4 hours); Garuda (no overnight stops); Vietnam Airlines (extra charge for stopovers over 6 h); Aeroflot (no transfers to other airlines); Cyprus Airways (interline connections allowed for "immediate continuous space", "stop overs" not allowed); Flybe (connection times between 1,5 and 2,5 hours); Malev

Allowed from age of 6: British Airways

Allowed from age of 8: AirTran (except last flight of day); Alaska Airlines (except connections over 2 hours); American Airlines (not to last flight of day, different terminal or airline); British Midlands (for connections in US and Canada); Continental (with restrictions); Delta (with restrictions); Hawaiian; Northwest