As many as 275 airlines, including the world’s 10 largest, will be joined by representatives from 610 airports and 90 tourism authorities around the world.
In total, 2,600 delegates from 130 countries are expected to attend the three-day event which will offer both meeting opportunities for delegates as well as aviation and tourism conferences.
The event is being hosted by the government of Catalonia and Barcelona city council, with both focusing on getting more long-haul routes for Barcelona El Prat Airport.
Sustainable tourism will also be a focus with The Travel Foundation attending as the event’s charity partner and taking place in sessions to help drive the benefits of responsible travel home.
Steven Small, brand director of Routes, said: "World Routes 2017 promises to be outstanding with record-breaking numbers of airlines and airports.
“I’m confident that our delegates will have an extremely productive event and take the opportunity to explore Catalonia’s charms."
Jaume Collboni, deputy mayor of enterprise, culture and innovation at Barcelona City Council, said: "In business events, Barcelona offers the best mix of competitive advantage for both companies and professionals.
“Therefore, the city will be a key factor for the success of this World Routes edition."