Brittany Ferries has opened bookings three months early for next year’s sailings.
The move is partly designed to meet customer demand for holidays next year.
But it also aims to deliver reassurance to those who hold 2021 reservations, should a return to international travel be delayed, according to the company.
The ferry firm, which in a normal year runs 12 ships connecting France, the UK, Ireland and Spain across 14 routes, said it is committed to holding 2022 prices at 2021 levels for the same journey.
The launch will come in two phases, with most routes to France and Spain available from today (Tuesday), covering services extending to November 2022.
The list includes ferries linking Portsmouth with Caen and St Malo, Portsmouth and Plymouth to Santander, and Cork to Roscoff.
Other routes will also be open for sale, but these will be limited to services operating into March next year.
Phase two of the launch will come in May when availability will be extended for all services up to November 2022.
Sales and marketing director Paul Acheson said: “We share the prime minister’s optimism that international travel will be back on the menu by May 17.
“But we also know that many travellers may be concerned about the situation in the countries we serve. Opening early means we cover all bases.
“We can serve those wishing to book ahead, offering the best choice for 2022 sailings. We can also bring flexibility and reassurance for those with a 2021 booking who may wish to amend their reservation at some point in the weeks ahead.”