The actress, who played Becky McDonald for six years, revealed that she would "love to go back" to the Weatherfield soap at some point.
Speaking on the British Soap Awards red carpet, she told PA: "I don't regret leaving at all. I haven't had a chance, I haven't had a moment to even think about it.
However, Kelly added: "The door is completely left wide open and I'd be happy to step through it at any point.
"I had a glorious time there and I'd love to go back but I was ready for a change."
Of her attendance at the star-studded ceremony, Kelly added: "Tonight is like a high school reunion for me, that's what I'm excited about. It's nice to come out en masse and celebrate."
The 32-year-old won 'Best Exit' for her departing episode in which Becky jetted off to Barbados with new boyfriend Danny.
Since leaving Corrie, Kelly has signed up for upcoming ITV drama Mr Selfridge.
The British Soap Awards will air tomorrow night (May 2) at 8pm on ITV1.