All sailings onboard Queen Mary 2 are cancelled up to and including 28 May, and voyages onboard Queen Elizabeth until 4 June.
The line said Queen Victoria departures “remain unaffected” and are scheduled to resume on 17 May.
Guests who have had their cruise cancelled will automatically receive a 125% cruise credit to redeem against a future voyage.
Credits can be used on any new booking made by the end of December 2021 and on any voyage available at the time of booking. Guests who prefer a refund should complete the form on Cunard.com.
Cunard president Simon Palethorpe said: “Our extension to the pause in operations is the result of the ongoing restrictions on cruising in the UK and around the world and recognises the significant lead times to return to service, once those restrictions are lifted.
“We are extremely sorry to be extending our pause in operations and for any disappointment this will cause. We know how much careful consideration goes into planning a holiday and apologise that our guests now have to wait a little bit longer to travel once again with Cunard.
“The tremendous response already to our 2022 voyages, put on sale just a few weeks ago, clearly demonstrates our guests are eagerly anticipating travelling again with us. We’re equally looking forward to the time when we can welcome back our guests.”
Palethorpe added: "We would like to thank our travel agent partners for their ongoing support in the midst of continued challenging circumstances. Their support and commitment to looking after guests has been unwavering throughout, and when there have been opportunities to promote new sailings agents have seized them and the response has been terrific."
