Wearing a smart shirt and blazer with bright pink cropped trousers and matching earring, Máxima smiled happily alongside King Willem-Alexander and Princesses Catherina-Amalia, Ariane, and Alexia, who all also wore shades of pink.
It's the second time Queen Máxima has flown to her native country in less than two months, after she visited in November when her father, Jorge Zorreguieta, was treated for leukaemia.
Máxima was believed to have spent the day with her 86-year-old dad and left at around 4:30pm on Sunday to catch her flight back to the Netherlands.
It is thought that the royals will spend time with Máxima's parents during their Christmas trip as they only see them once or twice a year.
Jorge wasn't allowed to attend her and Willem-Alexander's royal wedding in 2002, due to his connections to former Argentine president and dictator Rafael Videla. Jorge had served as Minister of Agriculture under the oppressive regime for two years.
Máxima and Willem-Alexander were granted permission to marry by the Parliament though, as it was deemed that the queen had herself done nothing wrong. The government's approval was necessary for Willem-Alexander to stay in line to the Dutch throne.
Jorge and his wife did not attend the coronation but were allowed to fly over for the christening of their granddaughters, as baptisms are considered a private matter and not a state one.