The company's shares rose a remarkable 150 per cent in 2017 as its modernised fleet and purchase of more than half of Air Berlin powered investor confidence in the stock.
Spohr said the company would continue its modernisation plans to help it reduce costs.
"This is the only way to sustainably increase our profitability," he said. "From a position of strength, we will continue to drive consolidation in Europe."
The chief executive also drew notice to the fact that, even though it had cut costs, it had become the only airline in Europe to be awarded a five-star rating for its service by industry monitor Skytrax. Just another nine carriers globally have been awarded five stars.
Spohr said roughly €3b had been invested in the group in 2017, a third more than in 2016 although partly skewed by the €900m it spent on the Air Berlin assets.
"These higher investments also reflect the increased size of the group but investments relative to revenue remain level with the world's most successful airlines," Spohr said.
Elsewhere, the Lufthansa Cargo business performed strongly too, with a €300m improvement in earnings leading it to turn a loss in 2016 to a €242m profit in 2017.