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The standard Halong Bay cruise. You board around midday, sail through the afternoon with a cave stop and a kayak or swim, sleep at anchor, and are back at the pier by late morning the next day. It buys you one sunset and one sunrise on the water, and about a single afternoon of real sailing.
Known For : Overnight Cruise in Halong Bay Sung Sot Cave Day Cruise in Halong Bay
The second night buys distance. Two night routes push beyond the day boat circuit into Bai Tu Long or the far side of Lan Ha, and usually add a second cave, a longer kayak session and a beach stop. Worth it if you want quiet water, skippable if Halong is one stop on a wider Vietnam trip.
Best Time: March to May, October to November
A day cruise is a long day. Halong is about 125 km from Hanoi, roughly 2.5 hours each way by expressway, so pickup is early and you get back after dark. You are afloat for four to six hours with lunch on board and usually one cave. Cheapest way to see the karsts, and the least restful.
Lan Ha lies alongside Cat Ba Island, south of Halong Bay proper, and carries far fewer boats. Routes here trade the big show caves for swimming beaches, kayaking and small floating villages. The Cat Ba archipelago was added to the Ha Long Bay UNESCO World Heritage listing in 2023.
Known For : Bai Tu Long National Park Co To Island Vung Vieng
Bai Tu Long is the northeastern extension of Halong Bay, roughly 30 km on, and the quietest of the three bays. Same limestone karsts and green water, a fraction of the boat traffic, plus the Vung Vieng fishing village. Fewer operators sail here, so choice of boat and departure days are narrower.
Best Time: February to April
Cat Ba is the largest island in the archipelago at 262 sq km, about 50 km from Haiphong and 150 km from Hanoi. Cruises based here mix bay sailing with time ashore: Cat Ba National Park, Cannon Fort, Viet Hai village. Useful if you want two or three nights nearby without living on a boat.
Run by Paradise Vietnam, which is based on Tuan Chau Island and also runs day boats in the bay. Elegance is currently sold as both a 2 day 1 night and a 3 day 2 night itinerary, so it is one of the few boats where you can take the longer route without switching operator. Cabins have balconies.
A small boat, which keeps group sizes down at the cave and kayak stops. Older listings place its route in both Bai Tu Long and Lan Ha Bay; those sit at opposite ends of the archipelago, so confirm which bay your departure actually sails. Check the current cabin plan with the operator.
One of the larger vessels in the bay, which means more cabin choice and a wider buffet, but also more people at every stop. Routes take in Sung Sot Cave, the largest of the show caves, and Luon Cave. Cabin numbers and onboard facilities change, so verify the current spec before you pay.
A steel hulled boat rather than the traditional wooden junk, sailing Lan Ha Bay. It has been listed as serving halal food, which is worth confirming at the time of booking if that matters to you. Room count and rating have not been verified recently, so ask the operator for the current deck plan.
An older Halong Bay boat known for balcony cabins and barbecue dinners on deck. We could not confirm that Pelican is still sailing under this name: boats here are regularly renamed, refitted or sold. Treat it as a starting point and check availability before building an itinerary around it.
Azalea has been sold as a Haiphong departure rather than the usual Tuan Chau pier, which suits travellers combining Halong with Cat Ba or Haiphong. We could not verify that it currently operates, and it is the one boat here with no live booking listing, so confirm availability before planning around it.
A cruise is the usual way to see Halong Bay, but it is not the only reason to come this far north. The caves in Halong Bay are the main stop on most itineraries, so it is worth knowing which ones your boat includes before you book. For the wider trip, islands in Vietnam covers what lies beyond the bay, and things to do in Vietnam puts the cruise in context with the rest of the country.
This post was published by Shivang Uniyal
Two days and one night is the standard, and it is enough to see the main bay. It gives you one afternoon of sailing, a night at anchor and a short morning before the boat returns to the pier. Three days and two nights is worth the extra cost only if you want to reach Bai Tu Long or the far side of Lan Ha Bay, where the day boats do not go.
Halong Bay has the famous caves, Sung Sot and Thien Cung among them, and by far the most boats. Lan Ha, alongside Cat Ba Island, trades show caves for swimming beaches, kayaking and quieter water. Bai Tu Long, the northeastern extension about 30 km on, is the quietest of the three but has the fewest operators and fewer departure days.
October to April is dry and cool, but roughly February to April often brings low cloud, sea fog and drizzle that flattens visibility across the karsts. May to September is warmer and clearer for swimming, with a storm risk in July and August that can cancel sailings outright. Late September to November is the most reliable window.
A day cruise from Hanoi is a twelve hour round trip for four to six hours on the water, and you see the bay only in the middle of the day when the light is flat and the boats are thickest. An overnight cruise gives you the karsts at sunset and again early in the morning before the day boats arrive, which is the main thing you are paying the cabin for.
Most 2 day 1 night fares cover the cabin, lunch and dinner on day one, breakfast and brunch on day two, and entry fees for the caves and islands on the route. Kayaking is usually included. Drinks, spa treatments and the road transfer from Hanoi are often billed separately, so check the inclusions line by line before you book.