Algeria cut diplomatic ties with the United Arab Emirates on 10 September and closed its sky the next midnight to every UAE-registered civil and military aircraft. The defence ministry left one door open. Commercial passenger flights to and from Algiers Houari Boumediene may keep flying until the end of 2026, when what Algiers calls the current contract expires. That is not a courtesy to network planners. It is a split rule. The city pair can limp to December. The overflight cannot. Emirates, Etihad, flydubai and Air Arabia all carry UAE registrations. A Dubai-Casablanca or Abu Dhabi-Lisbon track that used Algerian airspace now has to go around it. The politics can wait for the foreign ministries. The fuel burns tonight.
Neither carrier has published a full reroute catalogue, extra block minutes or a fuel-per-sector number. Trade reporting names the obvious candidates. Daily Emirates and Etihad flights to Casablanca. Etihad’s seasonal Malaga. UAE services toward Lisbon. Those are westbound Maghreb and Iberia sectors that sit on the short side of a great-circle from the Gulf. Push them south over the Sahara or north over the Mediterranean and the minutes add up, crews get closer to duty limits, and a bank that was built for a straight line starts to slip. Cargo on the same metal moves with the passenger schedule. A codeshare that assumed an Algerian crossing does not automatically inherit a new flight-plan. The exemption protects the Algiers market only until New Year’s Eve. Algeria had already moved earlier in 2026 to end the 2013 air-services agreement. Emirates had spoken of a last scheduled Algiers flight in February 2027. The airspace notice shortens that commercial runway by two months. After 31 December the city pair and the overflight sit under the same ban unless someone rewrites the paper.
Gulf hubs sell geography. They sell the idea that a widebody can leave Abu Dhabi or Dubai and draw a clean line to Europe and North Africa. Pakistan’s closure of Indian airspace already taught Indian carriers what a political polygon costs in hours and kerosene. Algeria is a smaller polygon with a sharper registration test. It does not close the sky to every airline. It closes it to one flag. That is easier to do overnight than a continent-wide NOTAM and harder for the targeted carriers to dilute with a codeshare partner’s metal. Alternate tracks exist. Resilience is not the same as costless resilience. Until Emirates and Etihad print the new tracks and the extra burn, treat the exemption as a stay of execution on one airport, not as proof that the Maghreb corridor still belongs to the Gulf timetable.