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
30 of 50 upcoming sailings are below typical right now.
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Hand-picked sailings with the strongest price signals, ranked by value rather than date.
Costa Diadema • Costa Cruises
Sep 12, 2026 → Sep 23, 2026 • Copenhagen → Savona
From $831
$76/night
↓39% below typical
Costa Diadema • Costa Cruises
Sep 11, 2026 → Sep 23, 2026 • Kiel → Savona
From $998
$83/night
↓33% below typical
Costa Diadema • Costa Cruises
Sep 25, 2026 → Sep 28, 2026 • Palma de Mallorca → Barcelona
From $332
$111/night
↓27% below typical
Costa Diadema • Costa Cruises
Sep 23, 2026 → Sep 27, 2026 • Savona ↔
From $377
$94/night
↓24% below typical
View the full Costa Diadema sailing calendar month by month, including departure timing, itinerary spans, port activity, and current price snapshots.
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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.