Costa Cruise Ships By Size, Age and Class

Costa Cruises is one of the cheapest cruise lines in Europe, offering a range of itineraries not just around the Mediterranean but also further afield, including the Caribbean, South America and more.

Cruise Mummy with Costa Smeralda

The Costa fleet is not quite as large as the biggest cruise lines in the world, but there are still various ships you can choose between depending on the kind of experience you want onboard.

In this guide, I’ll break down the full range of Costa cruise ships by their size, how old they are, and the different classes available.

Here’s a look at all of the Costa Cruises ships from largest to smallest.

ShipGross TonnageLengthDecks ( For Guests)GuestsCrew
Costa Toscana185,0101105 ft / 337 m18 (16)6,5541,646
Costa Smeralda185,0101105 ft / 337 m18 (16)6,5541,646
Costa Firenze135,5001059 ft / 323 m16 (16)5,2001,278
Costa Diadema133,0191,003 ft / 306 m15 (15)4,9271,253
Costa Fascinosa114,500950 ft / 290 m14 (14)3,7001,100
Costa Favolosa114,500950 ft / 290 m14 (14)3,7001,100
Costa Pacifica114,500950 ft / 290 m14 (14)3,7001,100
Costa Serena114,500950 ft / 290 m14 (14)3,7001,100
Costa Fortuna102,669893 ft / 272 m14 (14)3,4701,090
Costa Deliziosa92,720964 ft / 294 m13 (13)2,828934

Typically when comparing cruise ship sizes, you base it on gross tonnage – which, despite the name, is nothing to do with weight but is actually a measurement of the internal volume of the ship. The higher the number, the more ‘space’ onboard.

That’s why I’ve ranked Costa Deliziosa bottom, despite her being longer than some of the other ships on the list. Because she has one fewer deck, she has less space overall.

Those capacity figures are also the maximum capacity, if every room capable of sleeping 3 or 4 guests was at full occupancy. In most cases, they won’t be, since there will often be a lot of couples or pairs of friends sailing, so it’s rare for the ships to reach those numbers.

And one final interesting note with Costa – all of the ships barring the two biggest have a Deck 0, and it’s accessible to guests on the ship too. However, you should hope you don’t end up there, as the only guest facilities on that deck are the medical area/hospital. Otherwise, it’s a crew-only deck.

The Biggest Costa Ships: Costa Toscana and Costa Smeralda

The two biggest Costa Cruises ships are Costa Toscana and Costa Smeralda. These ships are part of the Excellence Class, and are not just the biggest ships ever built for Costa Cruises but they are also the first to be powered by LNG, a cleaner fuel type.

Aerial view of the Costa Smeralda cruise ship sailing on the open sea, featuring multiple decks with yellow lifeboats, a distinctive yellow funnel with a blue 'C' logo, and a wake of white foam on the blue water.
Costa Smeralda

These ships, as of 2024, make the list of the top 10 largest cruise ships in the world. However, in 2025, they will drop out as several ships measuring over 200,000 gross tonnes will launch.

The Smallest Costa Ship: Costa Deliziosa

The smallest cruise ship in the Costa fleet is the Costa Deliziosa – with a gross tonnage of 92,720, she is almost half the size of the biggest ships in the fleet. She is still not considered a small cruise ship as she can accommodate almost 3,000 guests.

None of the ships in the Costa fleet are small, so if you like the idea of a more intimate atmosphere onboard then it may not be the cruise line for you. But there is a very different experience on the smaller ships in the fleet compared to the biggest, with the larger ships definitely feeling busier, but compensating for that with more dining and entertainment options.

The Costa Deliziosa cruise ship captured from a side angle as it cruises on the deep blue ocean. Its white structure adorned with rows of balconies and distinctive yellow lifeboats is complemented by the ship's yellow funnel featuring a blue 'C' emblem, cruising under a bright blue sky with light wispy clouds.
Costa Deliziosa

Here’s a look at the fleet now arranged by age, from newest to oldest. You won’t notice a huge difference between this and the ships arranged by size:

ShipClassYear LaunchedLast Refurbished
Costa ToscanaExcellence2021N/A
Costa FirenzeVenezia2020N/A*
Costa SmeraldaExcellence2019N/A
Costa DiademaDiadema2014N/A
Costa FascinosaConcordia20122018
Costa FavolosaConcordia20112018
Costa DeliziosaLuminosa20102018
Costa PacificaConcordia20092017
Costa SerenaConcordia20072023
Costa FortunaFortuna20032018

*Costa Firenze is due to be transferred to the Carnival fleet in Spring 2024 and will be refurbished ahead of the move.

The Newest Costa Ship: Costa Toscana

The newest cruise ship in the Costa fleet is Costa Toscana. She’s also tied for the biggest ship in the fleet, alongside her twin sister Costa Smeralda. She made her maiden voyage in March 2021.

The Costa Toscana cruise ship is gliding through calm seas, captured from an aerial perspective. The ship's multiple decks with blue and white striped design, yellow lifeboats, and iconic yellow funnel with a 'C' logo are visible, contrasted against a tranquil marine backdrop with soft cloud cover.
Costa Toscana

The Oldest Costa Ship: Costa Fortuna

The oldest Costa Cruises ship still sailing for the cruise line is Costa Fortuna, which has been sailing for over 20 years for the cruise line and was last refurbished in 2018. 

The Costa Fortuna cruise ship moored in a fjord, surrounded by steep green mountains. The ship's white exterior with yellow lifeboats and prominent yellow funnel with a 'C' logo stands out in the natural beauty of the setting, while a small pier with people adds scale to the serene scene.
Costa Fortuna

Costa Cruises has existed since the mid 20th Century and so has seen many older cruise ships come and go. Costa Fortuna did have a sister ship, the Costa Magica, but she was sold to Seajets in 2023 and renamed as the Mykonos Magic.

Unfortunaltely, the reviews for Costa Fortuna aren’t good, as you can see here.

There are currently six classes of ship in the Costa Cruises fleet – Excellence, Venezia, Diadema, Luminosa, Concordia, and Fortuna. Several of these classes are part of wider ship classes for the Carnival group, with sister ships in other fleets.

The Carnival Group includes several cruise lines and has various classes of ship. The ships within these classes aren’t identical in size but will usually be pretty similar, though the onboard features will be tailored to the specific cruise line.

Here’s a quick look at the ship classes before we delve into each in a little more detail:

ShipCosta ClassWider Carnival Group Class
Costa ToscanaExcellenceExcellence
Costa SmeraldaExcellenceExcellence
Costa FirenzeVeneziaVista
Costa DiademaDiademaDream
Costa DeliziosaLuminosaVista-Spirit
Costa FascinosaConcordiaConcordia
Costa FavolosaConcordiaConcordia
Costa PacificaConcordiaConcordia
Costa SerenaConcordiaConcordia
Costa FortunaFortunaDestiny/Sunshine

Excellence Class

There are two Excellence Class ships in the Costa fleet – Costa Toscana and Costa Smeralda. They are part of the wider Excellence Class which includes ships such as P&O Cruises’ Iona and Arvia, and Carnival’s Mardi Gras, Carnival Celebration and Carnival Jubilee.

Costa Smeralda
Costa Smeralda

Suggested read: My Costa Smeralda Review

Venezia Class

The Venezia Class for Costa only includes one ship, Costa Firenze, although this ship will be leaving the fleet in Spring 2024 to become the Carnival Firenze.

The class was named after the Costa Venezia, which has already transferred to become the Carnival Venezia. This is a sub-class of the wider Vista Class which includes three Carnival ships (including the Carnival Vista) and two ships for Adora Cruises.

The Costa Firenze cruise ship sailing on the open ocean, viewed from the front-left side. The ship's white structure with tiered decks, distinctive yellow lifeboats, and the large yellow funnel with the 'C' logo are bathed in sunlight, highlighting its elegant design against the blue sea.
Costa Firenze

Diadema Class

Costa Diadema is the only ship in Costa’s Diadema Class. It’s part of the wider Dream Class, which includes three Carnival ships including the Carnival Dream. Costa Diadema is the largest of this class.

An aerial view of the Costa Diadema cruise ship traveling on a sunlit sea, its wake forming a V-shaped pattern in the water. The ship's deck is lined with yellow lifeboats, and its large yellow funnel stands out with the letter 'C' against the deep blue of the ocean.
Costa Diadema

Luminosa Class

The Luminosa Class includes only one ship in the Costa fleet, the Costa Deliziosa. It was named originally for the Costa Luminosa, before she transferred to Carnival and became the Carnival Luminosa. Two Cunard ships – Queen Victoria and Queen Elizabeth – are also part of this wider class.

The Carnival Luminosa cruise ship is captured cruising on a clear day with its red and black funnel standing out against the ship's white structure with yellow lifeboats. The name 'CARNIVAL LUMINOSA' is prominently displayed on the hull, highlighting the ship's identity as it makes its way across the serene blue waters.

Concordia Class

There are currently four ships in the Concordia Class for Costa – Costa Serena, Costa Pacifica, Costa Favolosa and Costa Fascinosa. There was a fifth, for which the class was named – the Costa Concordia, which sank in 2012. Carnival’s ship Carnival Splendor is part of this wider class.

What costa concordia looks like before sinking
Costa Concordia
Kate Hopkins from Seattle, WA, CC BY 2.0, via Wikimedia Commons

Fortuna Class

The Fortuna Class for Costa only includes one ship, the Costa Fortuna. The Costa Magica was once part of this class too, but was sold in 2023. It’s a sub-class of the Sunshine Class, formerly the Destiny Class, including three Carnival ships.

The Costa Fortuna cruise ship is showcased in full sail across the open sea, captured from a high angle showcasing its white structure, multiple decks with rows of windows, and a prominent yellow funnel with the 'C' logo. In the background, a distant coastline with mountains can be seen under a clear blue sky.
Costa Fortuna

For most guests, the best Costa Cruises ships are the two biggest and newest, the Costa Toscana and Costa Smeralda. They are in the best condition and have the most variety of dining options and activities to enjoy onboard.

However, because Costa’s cruises are cheap, that does mean that you’ll rarely find cruises on these ships that are below 60% capacity, and even at that level this can make them feel quite crowded at times. Indeed, both ships make the list of the 12 worst cruise ships according to customer reviews.

If you prefer a quieter experience then you may find the smaller ships are more appealing, especially Costa Deliziosa, which is the smallest but not the oldest. Again though, it doesn’t have the best reviews.

For anyone choosing Costa, as long as you understand what kind of experience to expect, you can still have a great time, but it makes sense to choose a ship that’s best suited to the style of cruising you enjoy.

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Cruise Mummy

Jenni Fielding is the founder of Cruise Mummy. She has worked in the cruise industry since 2015 and has taken over 30 cruises. Now, she helps over 1 million people per month to plan their perfect cruise holidays.

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