This 21-night P&O itinerary links Castries to Southampton, threading 7 ports of call through 7 countries with 15 days at sea to unwind aboard P&O Iona.
Why sail this route
You unpack once and let the ship do the travelling: 7 countries over 21 nights, starting in Castries and finishing in Southampton, with a new port waiting most mornings instead of airports and hotel check-ins.
The pacing runs to 7 port days and 15 days at sea — time to enjoy the ship between stops.
Good to know
- Best for
- Grand-voyage & long-cruise travellers
- Season
- Spring sailing
- Route
- Castries → Southampton
- Pace
- 7 port days · 15 sea days
Day-by-Day Itinerary
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The Ship
Your home for all 21 nights aboard P&O Iona — so you unpack once and wake up somewhere new each morning.
About This Cruise
The 21 Night Caribbean Transatlantic is a 21-night one-way itinerary aboard P&O Iona. You board in Castries and disembark in Southampton, calling at 7 ports across 7 countries along the way.
In sequence the voyage takes in St Lucia (Castries), Grenada (St Georges), Dominica (Roseau), Antigua (St Johns), Canary Islands (Tenerife), Spain (La Coruna) and 1 more.
As a one-way sailing you'll fly into Castries and home from Southampton, so it's worth checking the two gateways before you book. Longer hops are crossed on the 15 days at sea, keeping daylight hours for the ports. Sailing dates, cabin availability and fares vary by season — use Check Dates & Prices for live pricing, or call our team to talk through the options.