MEXICO CITY (Reuters) - Aviation industry groups are pressing Mexico’s government to reverse a January fee increase for international passengers arriving in Mexico City, claiming it is hurting the airlines and the country’s economic competitiveness.

FILE PHOTO: People are seen at Benito Juarez Airport in Mexico City, Mexico December 7, 2017. REUTERS/Carlos Jasso

The fee was raised 25 percent to $51.12 per passenger this year to help finance a $2 billion bond for the construction of a new Norman Foster-designed airport, a $13.4 billion development due to open in 2020. Andres Manuel Lopez Obrador, the frontrunner candidate in Mexico’s July presidential election, has vowed to scrap it.

The International Air Transport Association (IATA) and the Latin America and Caribbean Air Transport Association (ALTA), which represent airlines, opposed the increase, saying it made the existing Mexico City airport less competitive.

The biggest Mexican airlines using the airport are AeroMexico AEROMEX.MX, Interjet and Volaris, and international airlines use it too.

The associations sent a letter to Deputy Transport Minister Yuriria Mascott and Deputy Finance Minister Miguel Messmacher last month, ALTA executive director Luis Felipe de Oliveira said on Thursday.

In the letter, the associations warned the fee hike could result in 1.7 million fewer passengers per year and lead to lower overall revenues, he said. That would represent a drop of almost 11 percent from the 15.8 million international passengers served by the Mexico City airport in 2017, according to airport data.

So far, he said, the associations have received no reply.

Mexico City’s international airport, the Ministry of Communications and Transportation and Finance Ministry did not respond to requests for comment.

“The capacity of the current Mexico City airport is at near the top and that is hindering growth in the country and the region,” de Oliveira said. “However, we believe there is a better way to finance the new airport.”

One alternative put forward by the associations would be to lower the fee to encourage international travel.

Passengers who spend money in airports generate not only revenues for airport stores, said de Oliveira, but also for the airport itself because it receives a portion of stores’ sales.

Mexico City competes with Panama City, Bogota and other airports in the United States for hub traffic, and the associations argue the fee increase could weaken its competitiveness.

Mexico City International Airport lists the fee, which is charged in dollars, as $44.07, and adds a 16 percent value added tax (VAT).

Because airports calculate and present their fees in different ways, direct comparisons are not straightforward.

But documents published by airports show that Mexico City’s fee for international passengers is higher than that of Latin American rivals and roughly twice that of some large European hubs. Tocumen International Airport in Panama charges $40 and El Dorado International Airport in Bogota $38.

($1 = 0.8157 euros)