Norse, which already serves Bangkok from Gatwick, will fly three times a week to the Thai island, but has not specified a start date.
The low cost carrier will also increase its weekly Manchester-Bangkok flights from one a week to four a week from December 2026.
Phuket is also served by Virgin Atlantic from Heathrow and with Tui charter flights from Manchester, Birmingham and Gatwick.
Norse has added the Thailand flights after regaining an aircraft from its fleet that was leased to India’s IndiGo. Norse will also revive its Gatwick-Cape Town service this winter.
"Thailand continues to be one of the most popular destinations in our network,” said Norse chief executive Eivind Roald.
“We are delighted to offer customers even more opportunities to visit both Bangkok and Phuket this winter, in line with our strategy of adding capacity where demand is strongest.”