The organisation believes EU member states have the "power to influence and drive forward" the coordinated recovery effort needed to "preserve" the sector.
According to research by the WTTC, up to 900,000 travel jobs will also be at risk across the EU if restrictions are reimposed this winter.
The WTTC, along with the European Travel Commission (ETC), has stressed that measures aiming at restricting border crossing would "not have any health benefits", but could result in a "huge" economic impact to the region.
