Cruise deals, monthly prices & deck plans
Average price per person, per night for 2 adults sharing a interior cabin. Each sailing counts once. Only fresh, available USD quotes are included; this compares departure months, not a forecast. Budget, trip length and quick filters apply to the sailing list below, not the monthly averages.
Lowest average in this year: Nov 2026 · $216 per person/night across 5 sailings. Months with fewer than three sailings are not compared in this summary.
Fresh tracked fares across all departure dates, matching your guests, cabin, port, budget and trip length.
| Month | Sailings | Average | Median | Lowest |
|---|---|---|---|---|
| 2026-11 | 5 | $216 | $226 | $172 |
| 2026-12 | 14 | $223 | $235 | $166 |
19 matching sailings · cabin totals for 2 adults · 2026
More filters & save a ship search →
· South America
Ports of call
Santos | São Paulo → Ilha Bela
$681 per person · $170 per person/night
Down $7 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:23 PM UTCSee prices & track this cruise →· South America
Ports of call
Santos | São Paulo
$549 per person · $183 per person/night
Down $7 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:26 PM UTCSee prices & track this cruise →· South America
Ports of call
Santos | São Paulo → Ilha Bela
$701 per person · $175 per person/night
Down $7 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:18 PM UTCSee prices & track this cruise →· South America
Ports of call
Santos | São Paulo → Buenos Aires → Montevideo
$1,326 per person · $189 per person/night
Down $7 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:28 PM UTCSee prices & track this cruise →· South America
Ports of call
Santos | São Paulo → Buenos Aires → Montevideo
$1,446 per person · $207 per person/night
Down $7 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:34 PM UTCSee prices & track this cruise →Itajai · South America
Ports of call
Sao Paulo (Santos)
$499 per person · $166 per person/night
Down $7 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:14 PM UTCSee prices & track this cruise →Itajai · South America
Ports of call
Sao Paulo (Santos) → Ilhabela
$710 per person · $178 per person/night
I1 — Guarantee · Checked Nov 13, 10:12 PM UTCSee prices & track this cruise →· South America
Ports of call
Ilha Bela → Itajai
$956 per person · $239 per person/night
Down $16 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:24 PM UTCSee prices & track this cruise →· South America
Ports of call
Montevideo → Itajai → Santos | São Paulo
$1,662 per person · $237 per person/night
Down $6 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:31 PM UTCSee prices & track this cruise →· South America
Ports of call
Itajai
$794 per person · $265 per person/night
Down $16 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:27 PM UTCSee prices & track this cruise →· South America
Ports of call
Buenos Aires → Montevideo → Itajai
$1,771 per person · $253 per person/night
Down $16 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:29 PM UTCSee prices & track this cruise →· South America
Ports of call
Montevideo → Itajai → Santos | São Paulo
$1,822 per person · $260 per person/night
Down $6 from the previous recorded total
I1 — Guarantee · Checked Nov 13, 10:37 PM UTCSee prices & track this cruise →The current cabin-class total is at or below the lowest total in our recorded history for that sailing and guest count, and a higher price was previously recorded. It is not a claim about every fare ever sold. Specific categories, guarantees, promotions and inclusions can change; check the sailing page before booking.
Costa Diadema sails with Costa Cruises. Our current schedule includes 158 upcoming departures, including cruises from Kiel, Sao Paulo (Santos), Copenhagen. Compare dates above before choosing a cabin: different trip lengths and ports can make a big difference to the total.
The lowest fresh cabin total currently captured for two adults is $999. Choose a cabin class above and sort by lowest cabin total. Confirm the category, taxes, extras and final price before booking.
Use the monthly chart to compare the same cabin class and guest count. The table includes the average, median and lowest nightly fare, plus the number of sailings. A month with one sailing is not enough evidence of a seasonal trend.
Yes. Open your sailing and choose “Already booked?” to save your cabin and booked price. A lower observed fare may be worth a call to your travel advisor, but repricing depends on the fare rules. View your tracked cruises or read the price-drop guide.
No. A deck plan shows the ship layout. Live room availability and guarantee assignments are separate. Check that the plan’s dates cover your departure before choosing a stateroom.
Explore the restaurants, plan your evening clothes and print a packing list for the length of your trip.