Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.It’s no question that airfare will increase with rising fuel costs. However, high fuel prices aren’t the only thing airlines are worried about. Demand for air travel is growing quicker than infrastructure could handle, and that is threatening the growth of the industry.There are not enough pilotsBetween carriers adding new routes and thousands of pilots anticipated to retire in coming years, there’s currently an all-time high demand for commercial airline pilots. Higher salaries and a global push from unions for more benefits are not helping reduce employee costs. Air France-KLM’s most recent employee strike cost the airline at least 300 million euro (roughly $353 million at time of publication) in lost revenue, and we reported earlier this year that Emirates is parking an airplane a day because it doesn’t have enough pilots, though the airline’s president, Tim Clark, denies the claim. The International Air Transport Association (IATA) cited rising labor costs when it slashed this year’s global airline profit outlook on Monday.Pilots in the cockpit of a Swiss Air Lines Bombardier CS 100 (Photo by Michael Buholzer/AFP/Getty Images)Runways are operating at full capacityWith some runways, like one at Mumbai’s Chhatrapati Shivaji International Airport (BOM), leaving a gap as short as 65 seconds between two aircraft, it’s clear that airports need to build more of them to keep up with global demand. Just Tuesday, the UK government approved a highly controversial proposal for a third runway at London Heathrow Airport (LHR). US airports working on building additional runways include Chicago O’Hare International Airport (ORD) and Atlanta Hartsfield-Jackson Airport (ATL), but the pressure for expansion remains at other major hubs.There are not enough parking standsBesides expanding runways, airports need to build more gates. Many airports are already resorting to remote parking stands due to terminals being too congested, but there is only so much space for them to do that. “Infrastructure is a bigger threat to the growth of airlines than the price of oil,” Qatar Airways’ CEO, Akbar Al Bakdr, said in an interview. Emirates’ President Tim Clark said, “If you want to come to New York or Los Angeles or Hong Kong or whatever, there are no slots available.“United Airlines jets on the tarmac at Newark Airport. In the background is the Manhattan skyline (Photo by James Leynse/Corbis via Getty Images)Lack of pilots and insufficient airport infrastructure are industry-wide issues. Airlines are begging airports for more space. One solution would be to use bigger planes, but as we learned, superjumbos like the A380s aren’t here to stay. For now, airlines will cope with these issues by raising the fares for us, travelers.