It also forecast the global sector could contribute $8.6 trillion to the global GDP this year, 6.4% behind pre-pandemic levels.
Meanwhile, the council claimed the industry could see a net gain in jobs of 1.7% compared to pre-pandemic levels, resulting in some 4.3 million people being employed within the sector by the end of the year.
The WTTC urged global governments to remove the "patchwork" of restrictions, allow the fully vaccinated to travel freely and enable international travel using digital solutions.
Julia Simpson, WTTC president and chief executive, said travel to and from the UK is "poised for a full recovery".
