This is possible in certain circumstances. As a group escorted tour operator, they buy seats in blocks for travelling group. This means their holidays are competitively priced, as they source very good rates with their airline partners. Should you wish to upgrade, they would be deviating your booking away from the group economy fare, to a different fare type. This means the difference between the original economy fare quoted (part of our group) and the new upgraded fare will likely be greater than you may expect. You should not compare fares on airline websites, as these are not reflective of the arrangement we have with airlines.