International flights have been affected due to the ongoing Iran-Israel war since last Friday. After Israel, Iran, Iraq, Sudan, Libya, the airspace over the neighboring countries became unsafe, airline companies have to change their flight routes and cancel some flights.

This is the reaction of the companies that are causing huge financial losses. Experts in the aviation sector have pointed out that traffic management has become a challenge due to the change in air routes while the current air traffic is the highest in history. 

Planes have to travel long distances in search of safe air routes. Airlines complain that this will cost extra fuel, increase flight and crew time, have to pay fees for new 'airspace' and cause financial loss due to delays. For example, a direct flight from London to Hong Kong currently adds two hours, as noted by CNN journalist Brad Landon. Airplanes such as Boeing 777 or Airbus A350, which are considered energy-efficient for long distances, are consuming more fuel than average due to route changes. 

Experts in the aviation sector have said that airlines have taken this situation for granted. However, if the conflict is prolonged, it will lead to more complex problems, they warn. Due to the change in the route, looking at the aerial map of the world now, you can see a circular empty space (hole) in places. In the map of the platform like "Flight Radar", which gives information about the planes flying in the sky, there are no planes in the sky above the countries like Iran, Iraq, Ukraine, Sudan among the Pahalpur planes, the skies there are completely empty. 

This scene, which appears to be empty as the plane has not flown, has been described by the international media as a 'war-torn sky'. Conflict and war pose risks to airline operations and safety. To cope with this they mainly change the flight path. Bodies such as the European Union Aviation Safety Agency (EASA), the US Federal Aviation Administration (FAA) issue bulletins or 'Notices to Airmen' to inform about conflict zones. It advises or instructs airlines to avoid or avoid certain airspaces due to military activity, missile attacks or other risks. 

Regulatory bodies and governments have banned some areas from flying completely. It is commonly known as 'No-Flight Zone'. A war on the ground and aircraft safety at risk sometimes naturally creates a 'no-flight zone' scenario. However, permanent no-fly zones have been implemented for security reasons in sensitive locations such as Washington DC in the US, Buckingham Palace in the UK, and Ten Downing Street in London. Flights around nuclear power plants are also restricted for safety reasons. Similarly, 'no-flight zones' are declared around prisons in various countries. Flying over the Kaaba in Mecca, Islam's holiest site, is also strictly prohibited. From the Ukraine war to the current Iran-Israel conflict, airlines have learned to cope with the effects of war, according to

experts. However, experts say air travel becomes more challenging during natural disasters such as the volcanic eruption near Bali, Indonesia. The ash plume from the volcanic eruption on June 3 in Talibura village of Balichheu reached up to 11 km. As a result, flights to the tourist city of Bali are still disrupted. In 2010, Iceland's volcanic eruptions affected more than one million air travelers. It cost airlines more than $1.7 billion.

Disasters such as volcanic eruptions are considered more challenging for air services than war-torn areas. Because wars are often predictable as well as perceived threats, airlines have the option of changing air routes to avoid them. However, since the volcanic eruption is unpredictable and highly destructive, it is said to cause direct damage to the main parts of the aircraft. Also, many times it is not considered safe to fly because the volcanic ash is more harmful.