The payout for passengers “has no strings attached” and does not affect their rights, according to a Delta Air Lines spokesperson.

Investigators are probing the causes of an unusual plane crash at Canada's largest airport on Monday, when a regional jet flipped upside down upon landing during windy weather, sending 21 of the 80 people on board to hospital.

The moment a Delta Air Lines regional jet crashed at Toronto Pearson International Airport was captured on video Monday. The jet, operated by subsidiary Endeavor Air, is seen flipping onto its back as it attempted to land on the runway at the end of its flight from Minnesota.