The German supermarket chain's newest location is at 9175 Roosevelt Boulevard in Northeast Philadelphia.
It opened at 8 a.m.
For the first 100 customers, Lidl gave away a gift card worth anywhere from $5 to $100.
Customers were also able to enter to win a $500 gift card and take advantage of other special giveaways.
"Since the safety of our customers and employees is of utmost importance to us, we will be opening Wednesday, December 2 with modified grand opening events," Lidl said.
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The store will be open 8 a.m. to 9 p.m. every day.
Lidl operates around 11,200 stores with locations in 32 countries. The company employs more than 310,000 workers globally.
Food & Wine Magazine has ranked Lidl among its Top 10 U.S. Supermarket rankings.
Lidl recently announced it would expand healthcare coverage to all workers, including those working part-time.
Lidl's original Philadelphia store is located at 2290 E Butler Street. Other area locations include Folsom, Pennsylvania; Royersford, Pennsylvania; Lansdale, Pennsylvania; Cherry Hill, New Jersey; and Middletown, Delaware.
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