London Heathrow and Paris Charles de Gaulle reached 91% and 87% of their pre-pandemic level, respectively.
The flight traffic throughout Europe in January remained at 86% of its 2019 level, but a wide variety of recovery rate variations remained, Eurocontrol said.
The UK was the busiest country with 4,022 average daily flights.
Germany was the second-busiest with 3,327 daily flights and Spain the third with 3,312.
Among the top 10 airlines, only two major carriers (Lufthansa and easyJet) operated below their pre-virus level, both at 64%.
Ryanair was the top airline with 2,169 daily flights, 113% of 2019, and Turkish Airlines was ranked second with 1,274 daily flights, 100% of 2019. The third-largest average daily flights were carried out by Lufthansa (892 daily flights, 64% of 2019).
