The former Beatles star took to the stage at the Estadio De Liga in the country's capital of Quito, 2,800 metres above sea level, making it the highest concert Sir Paul has ever played.
He later took to Twitter and posted a photograph of himself carrying the flag of Ecuador on stage, along with the message to his 1.9m followers: 'Ecuador - what a night! Thank you.'
The complete Ecuador concert from April 28th 2014, amateur recording.
To celebrate his visit, local authorities organised for a meet and greet between the musician and the Ecuadorian Beatles Fan Club.