Three years ago, British Airways abandoned its route to Egypt's hotspot Sharm el Sheikh. Now, the airline has canceled all flights to the Egyptian capital Cairo for a week. 

On Saturday, passengers at London's Heathrow Airport were told their BA flights to Cairo had been canceled, with no alternative flights available for another week.

"We constantly review our security arrangements at all our airports around the world, and have suspended flights to Cairo for seven days as a precaution to allow for further assessment," a spokesperson for BA told BBC.

"The safety and security of our customers and crew is always our priority, and we would never operate an aircraft unless it was safe to do so."

In a statement to ABC News, BA regional director Sherif Barsoum said the decision had nothing to do with "security at Cairo airport." 

"The decision is purely related to the airlines."

"The British team that inspected the airport last week found nothing alarming; it was a positive visit," Barsoum said.

An estimated 415,000 British nationals visited Egypt in 2018. 

The UK Foreign Office has since updated its advice for British nationals traveling to Egypt, saying there's been "a heightened risk of terrorism against aviation. Additional security measures are in place for flights departing from Egypt to the UK."

In response to the decision, Egyptian billionaire Naguib Sawiris had some thoughts which he decided to put out on Twitter for the world to see. 

"So if security agencies in the West have information on a possible terror attack that caused BA and Lufthansa to stop flights to Egypt why not inform Egyptian security forces? Instead of this double standard isn't it a common war on terror?" Sawiris wrote. 

He was probably referring to the fact that Cairo airport had not been notified of the changes immediately, as a spokesperson told the BBC. 

The Egyptian billionaire then tweeted a 2018 report - Gallup Global Law and Order - to prove a point. The survey placed Egypt as the 16th safest country in the world (out of 135), outranking both the UK and the US.

Though if we are to be exact, a report in 2017 listed Egypt among the top 10 most dangerous countries for solo female travelers. 

In his initial tweet on the matter, the Egyptian billionaire reminded the airline that "terrorism is a global problem," not just an Egyptian one. 

He then said whoever plans on visiting Egypt is more than welcome and whoever is "scared of monsters will be approached by them in London or Berlin." 

In response to the cancelation of BA flights, Egypt's Ministry of Civil Aviation increased the seating capacity on EgyptAir flights en-route to London to accommodate passengers. 

EgyptAir usually flies twice daily between Heathrow and Cairo. On Saturday night, one of these flights was delayed by over an hour; this could have happened as a result of BA's decision to cancel all its flights.

Just a day after British Airways' decision, German airline Lufthansa followed suit, canceling its flight to the Egyptian capital on Saturday. However, the airline resumed all flights on Sunday.

In a statement on Saturday, the airline said:

"As safety is the number one priority of Lufthansa, the airline has temporarily suspended its flights to Cairo today as a precaution, while further assessment is being made."

A number of passengers were left stranded following British Airways' decision, many of whom took to Twitter to vent their frustration. Many are speculating that British Airways may know something that passengers were (and still are) unaware of.

"BA have moved me to @EGYPTAIR one hour later. Bit confusing as to why taking a different airline is safer for me?!" one Twitter user wrote.

"What does British Airways know about the security situation in Cairo that we don't?"

"Everything looks normal at the airport"