Solar Impulse 2 landed in Seville, Spain early Thursday after a 70-hour flight across the Atlantic Ocean.
The plane left New York City on Monday.
The Solar Impulse 2 stopped in Tulsa last month as it crossed the United States. Its trip around the world began in March 2015 in Abu Dhabi in the United Arab Emirates.
While flying across the U.S., the Solar Impulse 2 stopped in San Francisco, Phoenix, Tulsa, Dayton, Pennsylvania and New York City.