Following strong Western sanctions over Moscow’s military action in Ukraine, Russia’s flagship carrier Aeroflot recorded a 20% drop in passenger traffic in March compared to the same month last year.

Passenger traffic on international and domestic flights fell to 2.2 million in March, the first full month after the conflict began, from 2.77 million last year, the airline said

Passenger traffic on international flights declined by half, it said in a statement.

The Aeroflot group includes the Pobeda budget airline and the Rossiya domestic airline. The Russian state owns a 57.3 stake in the group.

Aeroflot suspended all international flights from March 8, a move it said was temporary.

This came after the carrier and all Russian airlines were banned from the airspace of the entire European Union, Britain and Canada.

In retaliation, Russia has banned airlines from these countries from flying over its territory.

Aeroflot’s passenger traffic on domestic flights has declined by 15.7 percent as Russia’s economy shrinks.

The export of aircraft, parts and equipment to Russia has been banned, as has maintenance work on Russian-registered Airbus and Boeing aircraft. Western insurers cannot provide coverage.

Boeing and Airbus planes make up almost all the fleet of Aeroflot and Pobeda, while more than half of Rossiya’s planes are Sukhoi Superjet 100s.

Pobeda said in March it will reduce its Boeing fleet from 41 to 25 aircraft due to a lack of parts.

Sheremetyevo Airport in Moscow, Russia’s largest, has announced that it will reduce its services as passenger traffic declines.