Seyfried, 27, took to micro-blogging site Twitter to share the same, reported Ace Showbiz.
"I just got mistaken for a Ms Lohan at Newark Airport," she tweeted.
Seyfried was spotted at the airport wearing ripped jeans, red sunglasses and a black sweater. She dragged a suitcase with one hand and clutched a water bottle in another while holding a puffy jacket.
Both the actresses had shared screen in "Mean Girls" in 2004.