Costa Diadema • Costa Cruises
3-night Western Mediterranean Loop via Marseille & Savona
Sep 25, 2026 → Sep 28, 2026 • Palma de Mallorca → Barcelona
From $338
$113/night
Good value
↓19% below typical
Costa Diadema
•
Costa Cruises
Costa Diadema
3,772 passengers
•
Mega ship
•
132,500 gross tons
•
Built 2014
Upcoming sailings
110 departures currently tracked.
Coverage
118 total sailings and 39 ports tracked.
Next departure
Jun 12, 2026
Costa Diadema cruise ship guide with schedule coverage, itinerary patterns, frequent ports of call, and upcoming sailing activity.
Use this page to compare where the ship is sailing next, how its calendar is distributed, and which itineraries show up most often over the next 18 months.
Booking verdict
🟢 Good time to book
19 of 50 upcoming sailings are below typical right now.
Below Typical
19 of 50
Cheapest upcoming
$135
Sep 21, 2026
Best deal
~19% below median
Good value
Best deals on Costa Diadema right now
Hand-picked sailings with the strongest price signals, ranked by value rather than date.
Costa Diadema • Costa Cruises
13-night Western Mediterranean Circuit via Lisboa, Gibraltar & Málaga
Sep 30, 2026 → Oct 13, 2026 • Cadiz ↔
From $1,399
$108/night
Good value
↓13% below typical
Costa Diadema • Costa Cruises
11-night Western Mediterranean Circuit via Savona, Barcelona & Lisboa
Sep 26, 2026 → Oct 7, 2026 • Marseille ↔
From $1,185
$108/night
Good value
↓12% below typical
Costa Diadema • Costa Cruises
3-night Western Mediterranean Loop via Marseille & Savona
Sep 20, 2027 → Sep 23, 2027 • Barcelona ↔
From $372
$124/night
Good value
↓11% below typical
Costa Diadema Cruise Schedule & Sailing Calendar
View the full Costa Diadema sailing calendar month by month, including departure timing, itinerary spans, port activity, and current price snapshots.
June 2026
Sailing
Port call
Click a bar for sailing details
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View all sailings for Costa Diadema
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All sailings
Upcoming sailings
Browse the full upcoming departure list for Costa Diadema.
Showing 50 of 110 upcoming departures.
View all sailings for Costa Diadema
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Costa Diadema usually sails...
Top itineraries
By departure count
Unknown itinerary
29 departures
· 7–7 nights
Typical: $1,226-$1,329
Good deal: <$1,100
Current best: $741 ✅
26.4%
Share
4 departures
· 3–4 nights
Typical: $394-$500
Good deal: <$300
Current best: $338 ✅
3.6%
Share
2 departures
· 1–4 nights
Typical: $326-$380
Good deal: <$300
Current best: $135 ✅
1.8%
Share
2 departures
· 11–11 nights
Typical: $1,220-$1,530
Good deal: <$1,100
Current best: $1,185 ✅
1.8%
Share
2 departures
· 11–11 nights
Typical: $1,220-$1,530
Good deal: <$1,100
Current best: $1,230 ✅
1.8%
Share
2 departures
· 11–12 nights
Typical: $1,276-$1,600
Good deal: <$1,200
Current best: $1,377
1.8%
Share
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About Costa Diadema
Costa Diadema is a cruise ship operated by Costa Cruises. It entered service in 2014. Current schedule coverage shows capacity for roughly 3,772 passengers.
This page brings together future departures, recurring itinerary patterns, frequent ports of call, and the live sailing calendar so it is easier to compare where this ship spends most of its time.
Next sailing
Jun 12, 2026
· 7 nights