ISTANBUL, June 6 (Reuters) - Global airlines called on Tuesday for broad co-operation to reach "very tough" emission targets and pledged to release interim climate targets next year as the industry aims for a goal of net-zero by 2050. Airlines are relying for 62% of their emissions reduction target on the fuel, which is currently between two to four times more expensive than kerosene. Walsh said airlines were not afraid to confront the fact that their share of total emissions will rise as other industries with fewer technological hurdles decarbonise. "Different parts of the world are moving at different paces and for us, representing global airlines, we've got to factor all of that into account." One thing airlines agreed on was frustration at aircraft delays, which have disrupted their schedules, with CEOs asking IATA to lobby planemakers.

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Persons: Willie Walsh, Walsh, Jo Dardenne, Tim Clark, Clark, we've, Joanna Plucinska, Tim Hepher, Andrew Heavens, Sriraj Kalluvila, Alexander Smith Organizations: Aviation, International Air Transport Association, Sustainable Aviation Fuel, SAF, Transport, Environment, Dubai's Emirates, Reuters, Thomson Locations: ISTANBUL, Istanbul, planemakers, United States, Dubai