Mark Warner is reported to be levying a surcharge of between £30 and £50 per person on ski holidays this winter.
The operator’s managing director David Hopkins wrote to clients confirming the surcharge, the Mail on Sunday reported.
“It will be necessary and unavoidable for us, for the first time in many years, to invoke the surcharge clause contained within out contractual terms and conditions,” he added.
A customer disclosed a surcharge on a holiday to Meribel in January, despite the same holiday being found on the operator’s website for £859 per person to new customers.
A company spokesman said: “We have no further comment to make on surcharging other than to confirm that this is reflected in the cost of holidays on sale now, which are pitched to stimulate demand within the current market.”