Overview

• A final order issued Sept. 15 revokes antitrust immunity and ends coordination on pricing, schedules and capacity between the carriers.
• Delta and Aeroméxico say flights, codeshares and frequent‑flyer reciprocity continue for now as they review the ruling.
• The DOT warns of likely higher fares in some markets, reduced capacity and potential route cuts unless market conditions change.
• The order does not require Delta to sell its 20% stake in Aeroméxico, and regulators say the partners can reapply if Mexico implements durable reforms.
• Officials cite opaque slot allocation at Mexico City’s main airport, the 2022 cargo relocation to Felipe Ángeles and the pair’s roughly 60% share of MEX–U.S. traffic, with the DOJ backing the action.