An industry survey says nearly half the American air travelers questioned would fly more except for all the hassle.

More than a fourth of the respondents to the Travel Industry Association survey said they have skipped at least one air trip in the past 12 months because of all the hassles. The group estimated that means 41 million fewer trips at a cost to the travel industry of about $18 billion. That figure included more than $9 billion to the airlines and $5.5 billion to hotels.

The survey did not address whether travelers chose alternate transportation for any the trips they didn't take by plane.

The travel association's president said the research "should be a wake-up call to America's policy leaders that the time for meaningful air system reform is now."