Travel agents are being inundated with telephone calls from worried holidaymakers that their summer plans will be disrupted as flight chaos continues.

Thousands more airline passengers saw their travel plans thrown into disarray on Tuesday as the sector struggles to cope with staff shortages.

READ MORE: Holidaymakers stranded abroad due to flight cancellations on easyJet, British Airways, Tui Airways and Wizz Air

Julia Lo Bue-Said, chief executive of Advantage Travel Partnership, which represents independent travel agents, said its members are receiving “a significant number of calls” from concerned customers.

She said: “About 30% of all calls that they’re receiving now are from customers that are reading the headlines, have bookings for July and August in the school holidays, and they are worried.”

Ms Bue-Said acknowledged that the situation is “hideous and disappointing” for passengers whose flights are being cancelled.

But she said travel agents are attempting to reassure customers that “in the vast majority of cases flights are departing and arriving”.

She added: “We’re trying to give a bit of perspective.”

READ MORE: TUI flights cancelled: TUI Airways issues £200 update to holidaymakers amid airport chaos

EasyJet axed at least 35 flights on Tuesday, with Gatwick the worst affected airport.

Hungarian carrier Wizz Air scrapped at least seven flights due to serve UK airports.

British Airways cancelled 124 Heathrow flights, although the airline said affected passengers were given advance notice.

In recent months many passengers whose flights have gone ahead reported being stuck in airport queues for several hours.

READ MORE: TUI apologise to Glasgow Airport travellers over last-minute axed flight

Ms Bue-Said revealed that the number of people who jetted off during last week’s half-term school holiday was 21% higher than 2019 levels, while summer holiday bookings are at around 80% of normal.

This represents a “huge surge in demand” compared with the previous two years when the industry was “shut down” due to coronavirus restrictions.

She said: “The significant surge has created a bottleneck in the system.

“The industry is now working really hard to make sure that over the next few weeks we are building resilience and scaling up as much as we can from a workforce point of view to meet customer demand and, frankly, give them a much better experience in some cases than they’re experiencing now.”

She added: “I’m confident that the industry will get to a point where these bottlenecks will be sorted.”