Mexico Moves to Ease Fight Over U.S. Airline Access

Mexico says it will address U.S. airline access concerns at AICM, but Washington says restrictions remain until reforms are implemented.

Mexico and the United States are trying to cool a dispute over flight access at Mexico City’s main airport. The issue centers on AICM slots, cargo operations, and whether U.S. airlines have been treated fairly under a 2015 air transport agreement. The agreement may help repair air links before the 2026 World Cup, but Washington says restrictions on Mexican airlines will remain until Mexico follows through.

Mexico to address U.S. airline concerns over AICM access

Mexico has agreed to address U.S. concerns about access to Mexico City International Airport (AICM) after months of tension over flight slots, cargo routes, and airline competition.

The dispute has become one of the most important aviation issues between Mexico and the United States. It affects airlines, cargo companies, travelers, and tourism businesses that depend on strong air links between the two countries.

U.S. officials said Mexico has committed to giving American carriers fair and transparent access to request and operate slots at AICM. A slot is the permission an airline needs to take off or land at a specific time.

For travelers, the issue may sound technical. In practice, it can affect flight choices, fares, connections, and how easily people move between the United States and Mexico.

A fight over space at Mexico City’s busiest airport

AICM remains the busiest airport in Mexico and a key gateway for international travel. It serves Mexico City, but it also connects travelers to beach destinations, colonial cities, business centers, and smaller regional airports.

The airport has long faced pressure from congestion. That has led Mexican authorities to reduce the number of allowed hourly operations and shift some aviation activity to Felipe Ángeles International Airport, known as AIFA.

The U.S. government has argued that changes made since 2022 hurt American carriers. Washington says U.S. airlines lost passenger slots at AICM, and cargo operators were forced to relocate from the main airport.

Mexico has defended its airport strategy as a response to congestion and safety concerns. The government has also promoted AIFA as part of the wider airport system serving the Valley of Mexico.

The latest understanding suggests both sides are trying to avoid a deeper aviation fight. Still, it does not end the dispute.

U.S. restrictions remain in place for now

The U.S. Department of Transportation said it will not lift restrictions on Mexican airlines until Mexico carries out the promised reforms.

Those restrictions were imposed after Washington accused Mexico of violating the 2015 U.S.-Mexico Air Transport Agreement. The measures included revoking approval for 13 Mexican carrier routes to the United States.

U.S. officials also froze some growth in Mexican carriers' operations between the United States and AICM. They moved to restrict Mexican passenger airlines from carrying belly cargo between AICM and the United States.

Belly cargo is freight carried in the lower hold of passenger aircraft. It is an important part of airline revenue and cross-border logistics.

The message from Washington is clear. The agreement is being treated as progress, but not as a final settlement.

What Mexico has agreed to do

Mexico has agreed to work toward a clearer slot system at AICM. That includes a capacity declaration process based on international practices.

The goal is to make slot access more predictable and transparent. That matters because airlines build schedules months in advance.

When slots are uncertain, airlines may delay route plans or reduce service. That can limit competition and leave travelers with fewer choices.

The agreement also includes continued technical talks between Mexican and U.S. officials. A bilateral working group is expected to follow the reforms and evaluate remaining restrictions.

Mexico has also sought recognition of AIFA as part of the region’s airport network. That point matters because Mexico wants the two-airport system to function as a shared solution for Mexico City’s aviation demand.

AICM capacity is also changing

The timing is important. AICM has already received approval to increase operations from 44 to 46 flights per hour, once the required infrastructure work is ready.

That is still below past operating levels. But even a small increase can matter at an airport where peak-hour access is tightly controlled.

The increase is tied to new rapid-exit taxiways and operational changes. It also comes as Mexico prepares to host World Cup matches in 2026.

The World Cup is not the only reason this matters. U.S. travelers remain a major part of Mexico’s tourism market, especially for air arrivals.

Any disruption in routes, capacity, or airline competition can ripple beyond Mexico City. It can affect connections to Puerto Vallarta, Cancún, Los Cabos, Guadalajara, Monterrey, and other destinations.

What travelers should watch next

For now, travelers should not expect an immediate wave of new flights. The agreement still depends on implementation.

The next step is whether Mexico changes its slot rules in a way that satisfies U.S. regulators. If that happens, Washington could reconsider restrictions on Mexican carriers.

Airlines will also be watching closely. More certainty at AICM could help carriers plan routes, restore service, or expand frequencies.

For passengers, the best outcome would be more competition and fewer disruptions. More competition can help keep fares in check, although fuel costs, airport fees, demand, and aircraft availability also play major roles.

The issue is also important for people living in Mexico who travel often to the United States. Many expats depend on reliable connections for family visits, medical care, business, and legal or financial matters.

A wider test for Mexico’s airport strategy

This dispute is also a test of Mexico’s broader airport policy. The government has spent years trying to reduce pressure on AICM while building traffic at AIFA.

That strategy has had mixed results. AIFA has grown, especially in cargo and some domestic services. But AICM remains the main airport for many passengers, airlines, and international connections.

The challenge is not only political. It is practical.

Airlines want airports with strong passenger demand, efficient ground access, clear rules, and stable operating conditions. Travelers want flights that are convenient and affordable.

Mexico’s task is to show that AICM and AIFA can work together without weakening competition or confusing the market.

The new agreement gives Mexico a chance to reset the conversation. But the outcome will depend on what happens next, not just what was announced.