Pope Francis' AmericanAirlines flight to Rome takes off

After nearly a week in the United States, Pope is on way to Vatican

PHILADELPHIA - Before boarding his flight Sunday, Pope Francis thanked about 400 leaders of the World Meeting of Families, supporters and other volunteers who helped organize his trip to Philadelphia.

My "days with you have been brief but they have been days of great grace for me and, I pray, for you too."

Vice President Joe Biden and his wife Dr. Jill Biden were among those at the airport sending Francis off as he prepared to board a plane to depart for Rome.

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Francis spoke in English as he thanked church leaders and others in Washington and New York for their work to organize his trip there.

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