The passenger volume of national airline Finnair rose in June by 12.2 percent from the previous year, the company said on Friday.
Finnair's blue and white planes carried some 1.4 million passengers in June, an all-time record for the carrier. It was established in 1923, making it one of the world's six oldest airlines.
Passenger figures in the North American region grew by more than 27 percent, by over 13 percent in European traffic, about nine percent in Asia and by five percent domestically.
Finavia: Flight emissions 4mn tonnes annually
The historic record comes at a time when organisations and institutions are encouraging travelers to fly less and to use less ecologically damaging forms of transportation.
A study from airport operator Finavia indicated in January that Finland's annual aviation emissions are at about four million tonnes of CO2, compared with the 6.5 million tonnes produced by automobile traffic.
The report notes that in 2016 Finland's domestic fossil fuel industry produced some 40 million tonnes of CO2; domestic traffic overall produced some 12 million tonnes of CO2; and domestic airplane flights accounted for some 0.2 million tonnes of CO2.