At least 90 airlines will expect to be using the New Distribution Capability standard by 2020, IATA claims.
The full results of a consultation with carriers around the world will be released at the industry body's annual general meeting in Dublin, Ireland, next week.
Speaking at the Travelport Live event in Macau this week, IATA regional vice president for Asia-Pacific, Conrad Clifford, says 180 airline members were asked in February this year if they would be implementing the standard as part of their distribution strategy.
Half responded that had plans to do so within four years.
Clifford did not disclose the identities of the carriers.
The remaining 50% of airlines taking part in the consultation did not rule out adopting the standard but instead said for the time being they are still establishing how they will integrate it into their existing interfaces.
Clifford says there was "strong take-up" from low-cost carriers, many of which already support the XML technology that NDC can use to connect into a carrier's platform.
The goal of the NDC standard is to allow airlines to build a platform where airfares and availability are combined with personalization tools, which in turn can also create offers and ancillary services that are personalized, all of which can then be piped down to intermediaries.
The NDC project has been dogged by controversy since its outset, with agency groups and the Global Distribution Systems initially sceptical over IATA's intentions to alter the distribution ecosystem in favour of airlines.
Some regional organisations, such as the American Society of Travel Agents, which said it could still not give its full support in late-2015 due to a number of issues, remain concerned.
But there is now a definite shift in the rhetoric from being openly hostile in 2013 when the project was first unveiled to now accepting that NDC is a concept that could prove beneficial to both airlines and intermediaries.
Jayson Westbury, chairman of the World Travel Agents Association Alliance (WTAAA), says it has "taken us a long time to get to this point" but intermediaries are ready to "embrace the standard".
"We need to get the party started," he adds.
Westbury concedes the "conversation was wrong" in the early days of the NDC project, yet the passage of time and a noticeably better process around dialogue and understanding has seen all the parties "put our swords down".
NB: Disclosure - the author's attendance at the event was supported by Travelport.