DFW is one of the US’s most popular destinations for airline travel.
The city is a popular destination for those seeking to catch flights to the United States, or for those wanting to see more of the sights of the nation.
However, its proximity to the US is also one of its main drawbacks.
“I would say about 60 percent of the flights to DFW are through [the US] border,” said David Shaffer, the founder of flight-tracking website FlightStats.com.
“But if you look at the other 20 percent, it’s the most expensive flights to see the US.
And the only ones that are more expensive are the ones that go to California or Florida.”
The average cost of a domestic flight to D.C. from D.F. is about $2,300.
Shaffer said that the most frequent domestic flights to destinations like Chicago and Atlanta were also cheaper, though not as expensive as DFW.
The US’s border with Mexico, however, is the main reason why the country has become the largest exporter of airline passengers, according to Shaffer.
“The main reason for that is that you can cross the border and fly to any other country and get on a plane,” Shaffer told Al Jazeera.
“There are no other airlines in the world that can do that.”
Shaffer’s site shows that more than 60 percent, or about 1.4 million domestic flights, pass through the US border every year.
“We have a border that is about three miles wide, and if you want to get from San Diego to Phoenix, you have to cross a big, wide border,” Shafer said.
“If you want a good flight from Phoenix to Houston, you’ve got to cross that border a lot.
It’s kind of like the entire United States.”
Shafer estimates that the US imports about $100 billion worth of goods and services from Mexico each year.
In 2016, the US exported about $12.8 billion worth, which was more than three times the amount Mexico exported.
“That’s probably about $50 billion of goods that go through the border every single year,” Shiffer said.
The border between the two countries is a common issue for travelers, according Shaffer and other experts.
“This is a major economic and security problem for the United Kingdom and the rest of the EU,” said Shaffer in a statement to Al Jazeera after the US approved an extension of the temporary border closures on Tuesday.
Shaffer added that “all the EU countries are going to be very worried if they see these things”.
Shaffer points out that US citizens, as well as tourists and business travellers, are affected by the border closures.
“It’s a huge financial and political blow for the US,” he said.
Shafer has been tracking the US-Mexico border since 2009, when he started to notice a dramatic increase in traffic through the southern border.
He said that during that time, he had seen the border become so congested that his flight times increased by several hours each way.
“When you see traffic that’s just getting more and more, that’s a problem,” Shaffers said.
At one point in 2010, Shaffer noticed that some of the most popular flights were also the most costly, in terms of price per flight.
The number of flights through the DFW-Mexico-U.S. border rose from around 2,500 in 2010 to nearly 11,000 in 2016, according the website Flight Stats.
In the past year, the number of international flights that cross the US/Mexico border rose by 50 percent.
“In 2016, when I first started tracking it, I thought that we had crossed a major milestone,” Shuffers said of the border closure.
“Now we’re seeing a lot more of that.”
At the same time, the country is still trying to sort out its immigration policies.
“Even though we’ve been in a position where we can be a major market for US goods, we still need to sort of fix the way we are going about this,” Shuffle said.
He added that the country will likely have to implement more restrictions on tourism to avoid the flow of people.
“One of the things that I’m really concerned about is that I think it’s really going to affect tourism,” Shifle said.
In 2017, the United Nations announced a new $1.1 billion project to expand its border fences and improve security in areas that are most at risk.
The plan includes the construction of fences that will not only prevent smuggling, but also improve the safety of travellers and businesses crossing the border.
The project, known as the Safe Border Initiative, has been announced for the border region between DFW and the Mexican state of Tamaulipas, which borders Texas and Mexico.
However the US Department of Homeland Security is still waiting to finalise its proposal on the