EasyJet chief executive Johan Lundgren said the tour operation currently took up only a fraction of the airline’s capacity and had plenty of room to expand.
“It is 4% on where we stand today, so there is no constraint on growth,” he said.
Flexibility gave it a unique advantage, he added. “EasyJet Holidays is doing exceptionally well. It’s built on the easyJet network which is the largest of any airline to beach and holiday destinations.
"The majority (of customers) come in via the easyJet site, so we are taking share from traditional operators, but ours is not a traditional tour operator model because it is based on the flexibility of the schedule.”
This, he said, meant it could appeal to customers who wanted, for example, three, four or five night durations and who could choose between flying in the morning or afternoon.
He added: “We are creating something absolutely unique and I think which is impossible for others to replicate.”
The package brand would be extended to other countries, with Switzerland being the first, he confirmed.
“There will be more markets to follow on from Switzerland. We are creating something really, really unique with very low risk.”
Lundgren predicted the airline would carry a million more peak summer passengers this year across its network.
He said he had sought assurances from UK airports and ground handlers to avoid a repeat of last summer’s delays.
“I have been in air traffic control towers and asked them to demonstrate they have enough people. We don’t expect you to tell us what you are doing, we expect you to demonstrate what you are doing.”