[3][4][5] The "Official Aviation Guide of the Airways" was first published in February 1929 in the United States, listing 35 airlines offering a total of 300 flights.

In 1958, advances in computer technology enabled flight schedules to be sorted and presented by city pair, instead of under separate sections for each airline timetable.

In 1962, OAG began providing data to the first computer reservation systems and produced its first customised timetable for airlines.

[10] The company produced the industry's first PC-based travel planning tool on CD-ROM in 1991, which was bundled with a plug-in CD drive, as those were rare at the time.

The Swedish CAA became its first internet timetable customer and the following year Cathay Pacific became the first airline to give its Frequent Flyer Club members online access to OAG Travel Information System through its website.

OAG made its flight information available on the Palm VII wireless organizer in 1999, followed a few months later by its first WAP mobile phone application.

[18] In 2013, OAG added to its analytical suite with the launch of Traffic Analyser, a product developed in partnership with Travelport; a leading distribution services and e-commerce provider for the global travel industry.

[25] In 2014, OAG began releasing its annual Punctuality League, which details the on-time performance of many of the world's largest airlines and airports.

[43] In January 2020, OAG released its first data and analysis about the impact of COVID-19 on China and Asia with information on flights from Wuhan.