John is scrapping all upcoming April and May dates of "The Million Dollar Piano" at the Colosseum at Caesars Palace in Las Vegas, as well as performance on May 6 in Bakersfield, California.
The "Rocket Man" and "Daniel" singer says in a statement that he became "violently ill" on a flight to the United Kingdom from Chile and "underwent immediate treatment" at a hospital, where he was released on Saturday.
"I am so fortunate to have the most incredible and loyal fans and apologize for disappointing them. I am extremely grateful to the medical team for their excellence in looking after me so well," said Elton.
Infections of this nature are rare and potentially deadly, according to a statement from The Colosseum at Caesars Palace.
The 70-year-old performer is expected to make a full recovery and hopes to return to a stage in Twickenham, England, on June 3.
The Associated Press contributed to this report.