On 2 July, Freedom of the Seas will embark on a 4 July weekend sailing to Perfect Day at CocoCay from Miami, with Odyssey of the Seas set to make its debut a day later.
It will set off from Fort Lauderdale on a series of six- and eight-night Caribbean cruises. Allure of the Seas, Symphony of the Seas, Independence of the Seas and Mariner of the Seas will all make their returns to service in the weeks to follow.
By the end of August, Royal expects to have 12 ships back in service cruising across the Bahamas, Caribbean, Alaska and Europe.
In the coming weeks, the cruise line will announce its plans to reintroduce its full fleet around the globe by the end of the year.
Michael Bayley, president and chief executive of Royal Caribbean, said: "This is it. Holidaymakers can finally plan to take their precious time off this summer and truly get away after what has been a challenging time for everyone.
"I would like to sincerely thank our guests and travel partners for their incredible patience and understanding during this very difficult period."
Serenade and Ovation will embark on seven-night Alaska sailings from Seattle starting 19 July and 13 August respectively.
Starting on 8 August, Allure will sail a seven-night Eastern and Western Caribbean itinerary from Port Canaveral, with Symphony sailing the same route from 14 August.
Independence of the Seas will embark on a seven-night Western Caribbean, sailing from Galveston in Texas, starting 15 August.
Three- and four-night Bahamas and CocoCay sailings from Port Canaveral, starting 23 August, onboard Mariner will also get under way.
The expanded summer lineup will go beyond the US to include international ports across the Atlantic, including Barcelona and Rome, when Harmony of the Seas returns to Europe.
Starting 15 August, the Oasis-class ship will set sail on seven-night itineraries to the western Mediterranean and visit iconic destinations including Palma, as well as other destinations in Spain and France.
