A new proposal by the Labour government to address potential jet fuel shortages could result in the cancellation of over 100,000 flights, affecting millions of passengers who have already booked their travel. Airports have warned that the plan may also lead to a sharp increase in airfares.
Airports Oppose Rule Change
Heathrow, Gatwick, and other major UK airports have written to ministers opposing the proposed change, which would allow airlines to cancel flights in advance without facing penalties. Under current rules, airlines must use at least 80% of their allocated takeoff and landing slots during a season to retain them for the following year. This is known as the "use it or lose it" rule. If an airline falls below this threshold, its slots can be reassigned to competitors.
Potential Impact on Passengers
The proposed relaxation could trigger a wave of cancellations, with up to 100,000 flights scrapped, many of which are already fully booked. This would leave holidaymakers scrambling for fewer available seats, likely driving up prices. Airports argue that the existing rules already provide sufficient flexibility for carriers to cancel flights if fuel shortages arise.
Airports UK, which represents over 50 airports, stated: "We are supportive of government efforts to plan for future contingencies. But we are not there yet and supply is not an issue. Our view is that the existing mechanisms will suffice for the time being."
Industry and Government Stance
An airport insider told The Telegraph: "The airlines have been at pains to make clear that there is no fuel shortage, as has the Government." The government is also seeking industry feedback on slot rules for the summer and winter 2026 seasons.



