Ukrainian drone attacks across Russia sparked widespread travel chaos late Tuesday and early Wednesday, forcing multiple Russian airlines to cancel and reroute dozens of flights. Repeated airport closures in Moscow and multiple regions threw operations into disarray and left thousands of passengers stuck on parked flights or stranded in airports without accommodation.

Moscow Mayor Sergey Sobyanin reported that air defense systems shot down at least eight drones on Tuesday evening and another nine early Wednesday morning.

The wave of attacks marked the third consecutive day of drone assaults on the capital, just days ahead of the city’s May 9 Victory Day parade.

Aviation authorities grounded flights at Moscow’s Sheremetyevo, Domodedovo, Vnukovo, and Zhukovsky airports, as well as in the cities of Nizhny Novgorod, Kirov, Yaroslavl, Kazan.

Russia’s major carriers including Aeroflot, Pobeda, and S7 warned passengers to brace for disruptions on Tuesday and Wednesday. S7, pledged to provide full refunds for affected passengers or rebook them on alternative flights.

“The restrictions were imposed to ensure the safety of civil aircraft flights,” Artyom Korenyako, a spokesperson for Russia’s Federal Air Transport Agency, told reporters.

Residents in the Ryazan, Tula, Orel, and Moscow regions reported seeing waves of drones flying toward the Russian capital.

The closures come as Russia expects 29 foreign leaders to attend the Victory Day military parade in Moscow later this week.

Chinese President Xi Jinping, who will arrive for a full state visit and Brazilian President Luiz Inacio Lula da Silva are among the expected attendees, according to Kremlin foreign policy aide Yury Ushakov. Serbian President Aleksandar Vucic and Slovak Prime Minister Robert Fico will be the only European leaders present at the parade.

The head of Kiev’s Center for Countering Disinformation Andrey Kovalenko has said on his Telegram channel that Ukraine’s overnight attacks targeted the Kubinka airbase in Moscow region, as well as the Shaykovka airfield in Kaluga region.

The attacks come despite Russian President Vladimir Putin’s announcement of a unilateral ceasefire from midnight May 7 to midnight May 11. Framed as a humanitarian gesture to commemorate the 80th anniversary of the Soviet victory over Nazi Germany, the Kremlin said the three-day pause was also intended to open the door to potential “direct negotiations with Kiev without preconditions.”

Kremlin spokesperson Dmitry Peskov confirmed on Wednesday that despite the latest attack, the ceasefire declared by the Russian president remains in effect.

“This is an initiative by the Russian side, by President Putin. It remains in force,” he told reporters.

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