A woman on an American Airlines jet flying from Argentina to JFK Airport was molested twice during the flight after the crew refused to give her a new seat after the first assault, officials said.

The woman said that she fell asleep and awoke to find the man seated next to her touching her breast, according to an official report.

She notified the flight crew and asked to be moved, but nothing was done.

After falling asleep again, she woke up to find the same man touching her thigh.

The airline notified Port Authority cops upon landing.

Yesterday, a Brooklyn federal magistrate judge signed an arrest complaint against the man.

A spokesman said the airline will look into the woman’s report “in conjunction with the ongoing police investigation.”