Cape Town - The Reds, on a high after defeating the Jaguares 18-7 in Buenos Aires on Saturday, faced stiffer opposition when trying to leave South America.
Having flown from Buenos Aires to Sao Paulo, the Reds were due to leave for Johannesburg - and then Cape Town - where they will be taking on the Stormers in their next Super Rugby clash on Saturday.
But, according to Netwerk24, things didn't go according to plan.
The Reds players and management weren't allowed to board the South African Airways (SAA) aircraft because they had not received yellow fever vaccinations.
As a result, the team had to fly via London.
They landed in Cape Town around 15 hours later than initially anticipated.
Saturday's clash at Newlands will kick off at 17:15.