Cruise ships docked in St. Thomas on a hazy day

(3 p.m. EST) -- Early planners in need of a warm-weather getaway already have their fair share of options. Cruise lines are continuing to expand their presense in the Caribbean, and many of them have revealed new itineraries and ships coming to the region, for 2018 and 2019 -- and even 2020. We've rounded up some of the highlights, below. Note: All cruises are available for booking.

Princess Cruises Continues to Sail the Caribbean from Florida in 2019

Princess Cruises will continue to offer summer Caribbean cruises from Florida in 2019, featuring weeklong Eastern Caribbean and Western Caribbean itineraries. These sailings will be combinable for a longer, 14-night Caribbean cruise.

The May through July 2019 summer season will feature 17 cruise departures roundtrip from Fort Lauderdale, visiting seven countries across four unique itineraries.

Highlights of the season will include access to the Belize Barrier Reef Reserve System (a UNESCO World Heritage Site) on every Western Caribbean cruise; more late-night says in St. Thomas and Cozumel; and calls to private beach resort Princess Cays on every seven-night Eastern Caribbean itinerary.

A reduced deposit of 10 percent is available for Captain Circle bookings made by August 31, 2018. 

Celebrity Cruises Brings Newest Ship to Caribbean, Dedicating Six Ships to Region

Celebrity Cruises' 2019/2020 Caribbean season will sail to 25 destinations across 19 countries on six ships, including 245 extended port visits.

The line's upcoming new-build, Celebrity Edge, will offer seven-night Eastern and Western Caribbean itineraries when it launches in late 2018, calling on ports like Tortola, St. Maarten, Grand Cayman and Key West.

Celebrity Equinox will emerge from a multimillion-dollar renovation in 2019 to once again offer year-round Caribbean sailings, from Fort Lauderdale. Ports include Punta Cana, St. Thomas and Grand Cayman. Celebrity Summit also will receive a refurb before heading out on 10- and 11-night Canada/New England and Bermuda sailings, as well as weeklong Southern Caribbean departures from San Juan (including new itineraries to the ABC Islands).

Celebrity Infinity will sail short, four- and five-night Caribbean cruises from Fort Lauderdale, with alternating visits to Cozumel and Nassau, in addition to Key West. Celebrity Reflection will sail longer, 10- and 11-night cruises to destinations such as Antigua, Barbados, St. Lucia, Aruba, Curacao, Costa Rica, Panama and Mexico. Celebrity Silhouette will offer 9- and 12-night Southern Caribbean cruises to Grand Cayman, Aruba, Bonaire and Curacao, or ports like St. Lucia, Grenada and Barbados. Silhouette will undergo the fleetwide "Celebrity Revolution" upgrades in early 2020.

SeaDream Yacht Club Offers a Strong Caribbean Season in 2018

"The Caribbean has had a strong recovery underway since September. We are already calling on the Leeward Islands and posting images and updates on our Facebook page and to our blog," according to SeaDream Yacht Club President Bob Lepisto.

The line, which focuses a mantra of "yachting not cruising," will call on destinations such as Virgin Gorda, St. Barts and Antigua in the early months of 2018. Itinerary highlights include a seven-night roundtrip sailing from San Juan on February 10 to Culebrita Island and Vieques Island, Puerto Rico; Saba; Gustavia, St. Barts (overnight); Sandy Ground, Anguilla; Soper's Hole, Tortola; Norman Island (overnight) and White Bay, Jost van Dyke, B.V.I.

SeaDream passengers can also book seven nights cruising from Barbados to St. Thomas or roundtrip from St. Thomas, both in March. A six-night cruise roundtrip from Antigua departs March 31.

Norwegian Cruise Line's Four Biggest Cruise Ships to Sail the Caribbean in 2019

For the first time ever, Norwegian Breakaway will homeport in Miami, where it will join mega-fleetmates Norwegian Escape, Norwegian Getaway and Norwegian Bliss -- launching April 2018 -- in offering seasonal Caribbean cruises.

Norwegian Breakaway will sail a mix of Eastern and Western Caribbean cruises in the 2019 summer season. Norwegian Getaway and Norwegian Bliss also will spend their 2018 - 2019 winters in the Caribbean, sailing from Miami. Meanwhile, Norwegian Escape will reposition from Miami to New York and continue to offer select Caribbean routes.

The new seven-night Eastern Caribbean itineraries offered by Norwegian Breakaway will include stops in St. Thomas, Tortola, San Juan and Nassau. Seven-night Western Caribbean itineraries will call at Roatan, Cozumel, Costa Maya and Norwegian Cruise Line Holding's purpose-built island in Southern Belize, Harvest Caye.

--By Brittany Chrusciel, Associate Editor, and Gina Kramer, Editor