American Airlines announced a massive order for new planes on Monday, splitting 260 new aircraft between Boeing, Airbus and Embraer in a move designed to meet growing travel demand and increase the airline’s supply of premium seats.

American said it placed options for up to 193 more planes over the next several years.

The airline and aircraft-makers did not disclose financial terms for the orders.

The package of orders includes 85 Boeing 737 Max 10s — a larger version of the Max that has not yet been certified by U.S. regulators. The plane is already years behind schedule, and United Airlines — which has 100 on order — is planning as if it will never receive the planes, according to its CEO.