Jet2 has suspended its flight and holidays programme until 25 March due to the ongoing uncertainty and travel restrictions caused by the Covid pandemic.
For customers due to travel from 26 March onwards, agents will receive further updates later, it said.
Those customers whose holidays have been cancelled will be refunded.
In a statement, Jet2 said: “Where customers yet to travel are affected by any programme changes, our approach to providing smooth and speedy refunds has been widely praised by independent travel agents, and we will be automatically cancelling affected bookings with a relevant refund.
“Since the onset of the pandemic, we have always respected that customers should receive their money back if we have not provided their flight or holiday.
“We know that customers and independent travel agents will remember this approach, and the way we have looked after them will play an important part in our long-term strategy to continue to grow successfully and become the UK’s leading and best leisure travel business.”
In an attempt to turn the disappointing but inevitable news into a more upbeat message, Jet2 added: “There is a lot of demand for our award-winning flights and holidays and with a huge choice of popular destinations available from across our network of 10 UK bases, customers can take advantage of some fantastic deals for summer 21, winter 21/22 and summer 22.
“We know that customers work hard and save hard for their holidays, and we are very excited to take them away on holiday again.
“We would like to thank our valued customers and independent travel agents for their patience and understanding.”