BUDGET airline Ryanair said yesterday that falling fuel costs had boosted profits, but added that cut-price fares would result in losses for the rest of the year.

The firm, which flies from Newcastle International and Durham Tees Valley airports, said pre-tax profits were 419.4m Euros (£376.6m) in the six months to September 30, from 105.2m Euros (£94.4m) last year, but said the results were “heavily distorted” by a 42 per cent drop in fuel costs.

Ryanair said this masked a 17 per cent decline in average fares and warned that prices would fall 20 per cent over the rest of the year, resulting in losses for the last two quarters.

Shares fell on the back of the update, closing last night down 5.9 per cent, at 2.77euros.

Ryanair chief executive Michael O’Leary said the group would be “substantially profitable at a time when many of our competitors are losing money, consolidating or going bust”.

He said traffic growth is strong, “but at the expense of declining average fares”, while the weakness of sterling and tourist taxes in the UK and Ireland had also hit takings.

“Ryanair remains ideally positioned to return to substantial profit growth as Europe emerges from this economic downturn, and we remain confident that our ‘growth during a recession’ policy will continue to deliver substantial returns for our passengers, our people and our shareholders,” he said.

Revenues were down two per cent at 1.8bn euros (£1.6bn).

Market conditions continued to be tough, particularly in Ireland and the UK, where overall air traffic is forecast to decline 15 per cent and ten per cent respectively.

Ryanair said it would consider binning growth plans if it cannot agree a deal with Boeing over an order for 200 aircraft, due for delivery between 2013 and 2016.

Mr O’Leary said: “We see no point in continuing to grow rapidly in a declining yield environment, where our main aircraft partner is unwilling to play its part in our cost reduction programme by passing on some of the enormous savings that Boeing have enjoyed both from suppliers and more efficient manufacturing in recent years.

“We would prefer to grow, but if Boeing doesn’t share our vision, then I believe that Ryanair should change course before the end of this fiscal year and manage the airline over the next three years to maximise cash for distribution to shareholders.”

The firm said it had won market share from high-fare carriers led by Air France, British Airways and Lufthansa, and expected this trend to continue.

Yesterday’s results come ahead of rival BA, which is expected to reveal a substantial slide into the red on Friday.