Airlines are facing mounting pressure on global routes after the closure of airspace over southern Azerbaijan, tightening options for carriers already rerouting flights because of escalating tensions in the Gulf.
The disruption comes in a region that typically functions as a key crossroads for international aviation. Flight paths had already been heavily altered as airlines avoided several conflict zones, forcing traffic into increasingly limited corridors.
A drone strike on the Central Asian nation has further compressed available routes, channeling aircraft through a narrow passage across northern Azerbaijan. Aviation consultant John Strickland said airlines now have a “very tight range of options” as they navigate the evolving restrictions.
Western carriers have largely avoided Russian airspace, including Siberia, since the Russian invasion of Ukraine. Now aircraft are also steering clear of Iran and Iraq, pushing flights toward northern or southern alternatives.
Real-time data from Flightradar24 shows aircraft clustering in a corridor roughly 100 kilometers wide over northern Azerbaijan, a country about the size of Portugal.
Gulf carriers have begun adding services from the United Arab Emirates and Oman to help move stranded travelers. However, flights from Qatar remain suspended and overall capacity is still far below normal, according to Opsgroup, which provides aviation risk intelligence.
“The central corridor across Iran, Iraq and the Gulf is effectively closed, so most traffic is going either north via the Caucasus and Afghanistan, or south via Egypt, Saudi Arabia and Oman,” said David Mumford. “Both routes are longer and busier than usual, so flight times and fuel burn are higher.”
Air traffic in the region dropped sharply after the attacks began on Saturday as airlines scrambled to adapt to the limited pathways.
Strickland said passengers are likely to experience longer flight times as airlines adopt more circuitous routings. “Flights already doing circuitous routing have even less choice,” he said.
Some carriers had already begun adjusting routes in recent weeks as tensions rose in the Gulf. This week, additional flights were pushed even farther south to bypass the conflict zone.
Congestion is most likely during peak directional flows — west-to-east in the afternoon and evening when flights depart Europe for Asia, and east-to-west early in the morning when aircraft return from Asia to Europe. The pattern adds another layer of complexity to airline scheduling alongside weather conditions and knock-on delays affecting aircraft and crews.
For now, most airlines have avoided adding refueling stops despite the longer routes. However, Qantas has introduced a refueling stop in Singapore on its nonstop service from Perth to London. Flights to India are also taking longer southern routes around the Gulf.
In the near term, aviation analysts are closely watching whether additional incidents occur in Azerbaijan, according to David Kaminski at FlightGlobal.
The oil-rich former Soviet republic borders Russia, Iran, Armenia and Georgia, making it strategically important despite its relatively small size.
If Azerbaijan were drawn directly into the conflict, airlines could face what Kaminski described as “a huge airspace equivalent of a brick wall from Saudi Arabia to northern Russia.” The resulting disruption, he said, “would be vast.”
A prolonged conflict could also challenge the hub-and-spoke model that has underpinned the growth of Gulf carriers. Airlines such as Emirates, Etihad Airways and Qatar Airways rely on hubs in Dubai, Abu Dhabi and Doha to funnel passengers between Europe and Asia.
Should the disruption persist, rival hubs such as Riyadh or Istanbul — where authorities already plan to expand Istanbul Airport to nine runways — could attempt to capture some of that traffic.
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