Fuel costs have nearly doubled at major U.S. airports as the Iran conflict disrupts global oil supply, prompting carriers to reduce schedules and urge early booking.
What Happened
A jet fuel crisis stemming from the U.S.-Israel war on Iran is forcing airlines to cancel flights and raise fares as the summer travel season approaches. The conflict has disrupted the Strait of Hormuz, bottling up approximately one-fifth of the world’s oil supply and sending aviation fuel costs surging.
Jet fuel prices have climbed to $4.88 per gallon at major hubs including Chicago O’Hare, Houston, Los Angeles, and New York — nearly double pre-war levels.
United Airlines announced in March 2026 it would cut approximately 5% of its Q2 and Q3 scheduled flights, becoming the first major U.S. carrier to reduce capacity in response to the fuel cost surge. United CEO Scott Kirby explained the airline would start “tactically pruning flying that’s temporarily unprofitable” due to high oil prices. In an employee memo, Kirby noted that doubled fuel prices would add $11 billion in annual expenses — more than twice United’s best-ever annual profit of under $5 billion.
Ryanair CEO Michael O’Leary has also warned that airlines may be forced to ground aircraft if the conflict continues to limit fuel supplies. Some carriers have responded by raising base fares, while others are adjusting schedules to reduce unprofitable routes.
Why It Matters
The Iran conflict has bottled up approximately one-fifth of the world’s oil supply, creating a cascading effect across the aviation industry. The crisis reveals deeper vulnerabilities in airline economics when geopolitical events disrupt energy markets.
O’Leary estimates that 5–10% of flights face cancellation risk in peak summer months — but only if the Strait of Hormuz remains closed through the end of April and into the summer travel season. He warns that delayed bookings will result in “much higher prices” for families, and frames early booking as the safer option despite potential cancellations.
Airlines are implementing different strategies to manage costs. While some carriers are raising base fares, others are adjusting capacity and route offerings to limit exposure to high fuel costs.
What’s Next
Industry executives expect the jet fuel crisis to persist through summer 2026, with O’Leary “strongly advising” travelers to book immediately before airfares increase further. Airlines will likely continue adjusting schedules and fees based on fuel price volatility.
The conflict’s duration remains uncertain, but carriers are preparing for extended high-cost operations. Airlines face difficult choices between maintaining schedules at a loss or reducing capacity during peak travel season.
Despite the volatility, O’Leary has indicated that a resolution to the Strait of Hormuz closure by mid-April could significantly limit the scale of summer disruptions. Travelers planning summer trips face a practical choice: book now at current elevated prices or risk higher costs and fewer options later.
