European travelers could face changes to summer flight plans as concerns rise over jet fuel availability and pricing linked to the Iran conflict. Multiple reports say a possible blockade or disruption of the Strait of Hormuz—an important shipping route for oil and fuel supplies—could tighten global energy markets. That, in turn, can raise costs for airlines, particularly for jet fuel, which is a major component of operating expenses. The sources indicate that if fuel shortages or higher procurement prices occur, airlines may respond by adjusting schedules, reducing capacity on some routes, or increasing ticket prices. The impact is expected to be most noticeable during peak travel periods when demand is high and cost pressures are harder to absorb. While the reports focus on the potential effects on travelers and the wider airline industry, they do not present specific airline actions or quantified fare increases, instead describing the risk of higher costs and possible disruptions depending on how the situation in and around the Strait develops.