The talk show host's Twitter account had an upside-down message Friday saying, "I made it to Australia!"
She's visiting Sydney and Melbourne on her six-day trip to the country for segments being filmed for her popular U.S. television show.
DeGeneres and wife Portia de Rossi greeted fans at the Sydney airport upon arrival. Photos posted on the show's website and social media accounts showed the couple in front of the Sydney Opera House and DeGeneres looking at kaolas and a giraffe at Sydney's Taronga Zoo.
"The Ellen DeGeneres Show" is in its 10th season. DeGeneres was honored with the Mark Twain Prize for American Humor last year.