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Costa Diadema Longest voyage — 24 nights visiting 14 ports on Costa Diadema.

By the numbers

132,500 GT

Tonnage

4,947

Guests

2013

Built

14

Decks

1,886

Cabins

1,003ft

Length · 306 m

$258 pp

Fares from

$1,213 pp

Median fare

More specifications

1,253

Crew

5 star

Rating

About Costa Diadema

Costa Diadema, launched in 2014, is built for relaxation and fun with lots of on-board activities, scintillating bars, gourmet restaurants and the spa area. Among the special features not to be missed: an entire deck dedicated to children with castle and pirate galleon and the terrace on deck 5 for strolling and enjoying an aperitif at sunset: a real treat for holidaying in perfect Italian style. The cabins aboard our Flagship are elegant, well-appointed and spacious for up to five guests. At any time of the day or night you'll be spoilt for choice on what to do: sports, games, a large three-story theatre that welcomes international artists, and you too can take to the stage with Tu sì que Vales... and then the Aperol Spritz Bar for a cocktail before dancing the night away at the disco, a games room for returning to your childhood and a real German pub. We look forward to welcoming you on board. Now take a look at the current position of Costa Diadema.

Ports Costa Diadema visits

Santos, Brazil (76) port guide Search cruises on Costa Diadema visiting Santos, Brazil Itajai (68) port guide Search cruises on Costa Diadema visiting Itajai Buenos Aires (48) port guide Search cruises on Costa Diadema visiting Buenos Aires Montevideo (48) port guide Search cruises on Costa Diadema visiting Montevideo Barcelona (27) port guide Search cruises on Costa Diadema visiting Barcelona Savona (22) port guide Search cruises on Costa Diadema visiting Savona Lisbon (21) port guide Search cruises on Costa Diadema visiting Lisbon Malaga (20) port guide Search cruises on Costa Diadema visiting Malaga Cadiz (19) port guide Search cruises on Costa Diadema visiting Cadiz Maceio (19) port guide Search cruises on Costa Diadema visiting Maceio Rio de Janeiro (19) port guide Search cruises on Costa Diadema visiting Rio de Janeiro Salvador (19) port guide Search cruises on Costa Diadema visiting Salvador Tenerife (19) port guide Search cruises on Costa Diadema visiting Tenerife Las Palmas,Gran Canaria (18) port guide Search cruises on Costa Diadema visiting Las Palmas,Gran Canaria Sao Vicente (18) port guide Search cruises on Costa Diadema visiting Sao Vicente Marseille, France (15) port guide Search cruises on Costa Diadema visiting Marseille, France
Show 3 more ports

Ship gallery

Costa Diadema 4D Cinema Hall Birreria Aperol Spritz Bar Laser Star Bravo Chef Show Wine Bar Teppanyaki Shopping Area Self Service Restaurant Samsara Restaurant Amarillo Ice Cream Disco

Deck plans

Costa Diadema deck plan — DECK 01 Excelsior

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Frequently asked questions

What is Costa Diadema?
Costa Diadema is a Dream-class ship operated by Costa Crociere and owned by Carnival Corporation. At the time of her October 2014 delivery she was the largest vessel ever to fly an Italian flag and Costa's largest ship. She is 133,019 GT, carries up to 4,947 passengers, and is currently deployed in South America.
What activities and recreation are on Costa Diadema?
Costa Diadema has three swimming pools and an outside promenade extending over 500 metres.
What are the staterooms like on Costa Diadema?
Costa Diadema has 1,862 cabins carrying up to 4,947 passengers. The ship has a six-generator electrical system supplied by General Electric.
Where does Costa Diadema sail?
Costa Diadema's inaugural seasons were in the Western Mediterranean. From November 2018 she began rotating between the Mediterranean (spring/summer) and the Persian Gulf (fall/winter). As of April 2026 she is operating short South American itineraries from Itajai and Santos, with a repositioning to Kiel and Copenhagen for Northern European fjords sailings planned from May 2026.
What is the history of Costa Diadema?
The keel was laid on 10 December 2012 at Fincantieri's Marghera shipyard. She was launched on 15 November 2013, delivered 25 October 2014, and performed a Vernissage Cruise from Trieste to Genoa on 1 November. Her naming ceremony was held on 7 November 2014 at the Port of Genoa, where she was christened by Italian travel agent Carolina Micelli.
How much does a cruise on Costa Diadema cost?
Fares start at $258 per person. The median fare across 85 upcoming sailings is $1,213 per person. Open a sailing to see its listed cabin fares and any observed price history.

Sailing soon on Costa Diadema

Prices per person · incl. taxes & fees.

Showing 194 Costa Diadema sailings

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Upcoming sailings on this ship
View From pp Destination Departs Nights

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Europe Oct 17, 2026 11

from $1,840

$167 / night

Europe Oct 18, 2026 11

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Europe Oct 19, 2026 12

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Europe Oct 21, 2026 10

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Europe Oct 25, 2026 6

from $535

$133 / night

Europe Oct 28, 2026 4

from $258

$86 / night

Europe Oct 28, 2026 3

from $380

$95 / night

Europe Oct 29, 2026 4

from $383

$191 / night

Europe Oct 29, 2026 2

from $501

$167 / night

Europe Oct 31, 2026 3

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Europe Oct 31, 2026 2

from $2,083

$99 / night

Western Mediterranean Nov 1, 2026 21

from $2,294

$104 / night

Western Mediterranean Nov 1, 2026 22

from $2,417

$100 / night

Western Mediterranean Nov 1, 2026 24

from $2,083

$99 / night

Western Mediterranean Nov 1, 2026 21

Call for price

Mediterranean Nov 1, 2026 2

from $2,179

$103 / night

Western Mediterranean Nov 2, 2026 21

from $2,007

$100 / night

Western Mediterranean Nov 2, 2026 20

from $451

$75 / night

Europe Nov 2, 2026 6

Call for price

Canaries Nov 2, 2026 9

Frequently asked questions

What is Costa Diadema?
Costa Diadema is a Dream-class ship operated by Costa Crociere and owned by Carnival Corporation. At the time of her October 2014 delivery she was the largest vessel ever to fly an Italian flag and Costa's largest ship. She is 133,019 GT, carries up to 4,947 passengers, and is currently deployed in South America.
What activities and recreation are on Costa Diadema?
Costa Diadema has three swimming pools and an outside promenade extending over 500 metres.
What are the staterooms like on Costa Diadema?
Costa Diadema has 1,862 cabins carrying up to 4,947 passengers. The ship has a six-generator electrical system supplied by General Electric.
Where does Costa Diadema sail?
Costa Diadema's inaugural seasons were in the Western Mediterranean. From November 2018 she began rotating between the Mediterranean (spring/summer) and the Persian Gulf (fall/winter). As of April 2026 she is operating short South American itineraries from Itajai and Santos, with a repositioning to Kiel and Copenhagen for Northern European fjords sailings planned from May 2026.
What is the history of Costa Diadema?
The keel was laid on 10 December 2012 at Fincantieri's Marghera shipyard. She was launched on 15 November 2013, delivered 25 October 2014, and performed a Vernissage Cruise from Trieste to Genoa on 1 November. Her naming ceremony was held on 7 November 2014 at the Port of Genoa, where she was christened by Italian travel agent Carolina Micelli.
How much does a cruise on Costa Diadema cost?
Fares start at $258 per person. The median fare across 85 upcoming sailings is $1,213 per person. Open a sailing to see its listed cabin fares and any observed price history.

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