As of 2026-07-08, Wonder of the Seas tops the list with 6,988 seats.
- #1 Wonder of the Seas — 6,988 seats
Oasis-class cruise ship built in 2022
Wonder of the Seas is a cruise ship operated by Royal Caribbean International. She was completed in 2022 in the Chantiers de l'Atlantique shipyard in Saint-Nazaire France, the fifth in Royal Caribbean's Oasis class of cruise ships. At 235,600 GT, she was the largest cruise ship by gross tonnage, until she was surpassed in 2024 by the Icon-class cruise ship, Icon of the Seas, also owned by Royal Caribbean International. Read more on Wikipedia.
Wikidata - #2 AIDAcosma — 6,880 seats
cruise ship
AIDAcosma is the second and final Helios-class cruise ship built by Meyer Werft GmbH at Papenburg, Germany under contract from Carnival Corporation for AIDA Cruises. The second of the new Excellence-class ships, she was launched on 10 July 2021 and delivered on December 21, 2021. Read more on Wikipedia.
Wikidata - #3 Allure of the Seas — 6,780 seats
Oasis-class cruise ship built in 2010
Allure of the Seas is an Oasis-class cruise ship owned and operated by Royal Caribbean International. The Oasis class ships were the largest passenger vessels in service until 2024, when the Icon-class ship, Icon of the Seas, surpassed them to become the world's largest cruise ship. Allure is 50 millimetres (2.0 in) longer than her sister ship Oasis of the Seas, though both were built to the same specifications. Designed under the name "Project Genesis", she was ordered from Aker Finnyards in... Read more on Wikipedia.
Wikidata - #4 Oasis of the Seas — 6,771 seats
Oasis-class cruise ship built in 2009
Oasis of the Seas is a cruise ship operated by Royal Caribbean International. She is the first of her class, the Oasis class, whose ships were the largest passenger ships in the world, until surpassed in 2024 by the Icon class. Her hull was laid down in November 2007 and she was completed and delivered to Royal Caribbean in October 2009. At the time of construction, Oasis of the Seas set a new capacity record of carrying 6,669 passengers. She was joined by sister ships Allure of the Seas in... Read more on Wikipedia.
Wikidata - #5 MSC World America — 6,764 seats
cruise ship to operate for MSC Cruises beginning in 2025
source Wikidata - #6 Harmony of the Seas — 6,687 seats
Oasis-class cruise ship built in 2016
Harmony of the Seas is an Oasis-class cruise ship built by STX France at the Chantiers de l'Atlantique shipyard in Saint-Nazaire, France, for Royal Caribbean International. With a gross tonnage of 226,963 GT, she is the sixth largest passenger ship in the world. Read more on Wikipedia.
Wikidata - #7 Symphony of the Seas — 6,680 seats
Oasis-class cruise ship built in 2018
Symphony of the Seas is an Oasis-class cruise ship owned and operated by Royal Caribbean International. She was built in 2018 in the Chantiers de l'Atlantique shipyard in Saint-Nazaire, France, the fourth in Royal Caribbean's Oasis class of cruise ships. Read more on Wikipedia.
Wikidata - #8 Costa Toscana — 6,554 seats
ship built in 2021
Costa Toscana is an Excellence-class cruise ship currently operated by the Italian cruise line Costa Cruises, a subsidiary of Carnival Corporation & plc. The ship was built in 2021. Costa Toscana has a sister ship, Costa Smeralda, which had been delivered in 2019. At 186,364 gross tonnage (GT), she is the largest ship commissioned for and to ever operate for Costa, and the 12th-largest cruise ship in the world, as of 2025. Read more on Wikipedia.
Wikidata - #9 Costa Smeralda — 6,554 seats
ship built in 2019
Costa Smeralda is an Excellence-class cruise ship currently operated by Costa Cruises, a subsidiary of Carnival Corporation & plc. At 185,010 gross tonnage (GT), she is the second-largest ship commissioned for and to ever operate for Costa, and is the 14th-largest cruise ship in the world, as of 2025. Costa Smeralda is also the second cruise ship in the world to be fully powered by liquefied natural gas (LNG), making Costa the second cruise line to operate a ship running on LNG, after sister... Read more on Wikipedia.
Wikidata - #10 Mardi Gras — 6,338 seats
cruise ship built in 2020
Mardi Gras is an Excellence-class cruise ship operated by Carnival Cruise Line. She is Carnival's lead vessel of the fleet's Excel-class, a subclass of the Excellence class, and was built by Finnish shipbuilder Meyer Turku in Turku, Finland. She also has often been incorrectly referred to as Carnival Mardi Gras, though Carnival has specified that her name does not include the "Carnival" prefix, a first since the Fantasy-class vessels originally omitted "Carnival" in their names upon their... Read more on Wikipedia.
Wikidata