A thunderstorm is forecast to roll into both Brisbane and Sydney on Friday evening, leading to the cancellation of at least four flights.

Another three flights from the Gold Coast to Sydney have been cancelled.

Swiftie Megan told ABC Radio Brisbane Breakfast she had to cough up $700 on last-minute flights after her Brisbane-to-Sydney flight was cancelled hours before Friday night’s concert.

“I woke up this morning to an email from Virgin saying that my flight this afternoon had been cancelled,” she said.

“When I called them, they did say that [the storms] were the reason for the cancellation.”

The airline rebooked her onto a flight to Sydney on Sunday, but her tickets are to the Saturday night show.

“I’ve had to rebook flights with Qantas for tomorrow morning for pretty much the double the price of what I originally paid for them,” she said.

“They were $700 one way for tomorrow morning.

“The flights leaving on Friday were $1500 one way forms Brisbane to Sydney.”

“$1500 one way?!,” ABC host Loretta Ryan exclaimed. “That’s disgusting!”.

Swift will perform her three-hour long Eras Tour show for 80,000 fans each night in Sydney from Friday to Monday.

High-end severe storms for Sydney, Blue Mountains, Central Coast, and Illawarra have been forecast for Friday night with giant hail, locally destructive winds and heavy rain, according to NSW Incident Alerts.

Virgin, Qantas and Jetstar have all been contacted for comment on the flight cancellations.