Kingston 1000 Islands Cruises — Compare & Book the Best-Rated Tours

Kingston sits at the point where Lake Ontario narrows into the St. Lawrence River, and the river answers by scattering itself into roughly 1,800 granite islands over the next 50 kilometres downstream — some barely large enough for a single pine tree, others holding entire summer estates. It’s a landscape you can really only understand from the water — which is what a short St. Lawrence River sightseeing cruise is for, as distinct from the multi-day river ships that dominate the search results. It’s also why the cruise business here has run continuously, in one form or another, since paddlewheelers first carried Gilded Age tourists past the “Millionaires’ Row” cottages in the late 1800s.

Where the cruises actually leave from

There isn’t one departure point — there are three, and the choice matters more than most first-time visitors expect. See our Gananoque vs. Ivy Lea vs. Kingston comparison for a full side-by-side breakdown.

Downtown Kingston is the obvious choice if you’re staying in the city. Cruises here board at Crawford Wharf, next to the ticket office at 1 Brock Street, and run aboard the Island Queen or Island Star — two quite different boats, and on the dining cruises you can choose which one you sail on by choosing your weekday. Both are built for live entertainment and onboard dining, which is why Kingston’s lunch, brunch, and sunset dinner cruises depart from here rather than the smaller island ports.

Gananoque, about 30 minutes east of Kingston, sits closer to the heart of the islands themselves and is the only departure point with a cruise that actually docks at Boldt Castle — whether that drive is worth making is the subject of our Kingston vs Gananoque comparison. The catch: that 5-hour cruise crosses into U.S. territory at Heart Island, so it’s the one route on this page that requires a passport or NEXUS card. Gananoque’s shorter 1- and 3-hour options stay in Canadian waters and skip the paperwork.

Ivy Lea, just off the 1000 Islands Parkway near the international bridge, is the closest port to Singer Castle and offers the shortest drive-and-board routine if you’re coming from the Kingston side already — our Ivy Lea cruise guide covers what its one-hour route actually reaches. Its cruises pass both Boldt Castle and Singer Castle without docking at either, so — like Gananoque’s shorter cruises — no passport is needed.

What you’re actually looking at on the water

The islands cluster into named groups, and a good narrated cruise will point out most of them: the Admiralty Islands, the cottage-covered cluster nearest Kingston, threaded by Wanderer’s Channel and the Bateau Channel; Zavikon Island, home to what’s often billed as the world’s smallest international bridge (a footbridge a few metres long, connecting two tiny islets — one Canadian, one American); and the grander landmarks further downriver, Boldt Castle and Singer Castle, both genuine early-1900s estates rather than replicas.

Boldt Castle is the better-known of the two — and the one most people are actually trying to see, though only some of the departure ports reach it. It is a six-story, 120-room mansion that industrialist George Boldt began building in 1900 as a Valentine’s gift for his wife Louise, only to halt construction permanently the moment she died in 1904. The half-finished, then later restored, castle on Heart Island is now one of the most-photographed stops in the region, and it’s the reason the Gananoque 5-hour cruise commands a higher price than the shorter sightseeing-only options — it’s the only ticket that includes admission.

Singer Castle, on Dark Island near Ivy Lea, is smaller and less visited, with a reputation for hidden passages and a widow’s walk with river views — most cruises pass it at a distance rather than stopping.

Picking a cruise length and format

A useful way to think about it: length buys you distance, not necessarily more to see — our route-by-route breakdown of every cruise lays the fourteen options out by duration and price. The 1-hour cruises from Gananoque and Ivy Lea cover the nearer islands and channels at a brisk pace — enough for a solid overview if you’re short on time. Three hours is where most first-time visitors end up, and it’s worth comparing the Gananoque, Kingston and Rockport three-hour routes against each other before booking, since they cover genuinely different parts of the river. The 3-hour Kingston cruises go deeper into the Admiralty group and add live commentary and entertainment. The themed cruises — lunch and brunch, and sunset dinner — run the same 3-hour Kingston route but build a sit-down meal into the schedule, which is why they cost roughly two to three times as much as the plain sightseeing option — our prices and tickets breakdown works through what each route costs after HST, parking and drinks.

If castle access matters to you, only one option delivers it: Gananoque’s 5-hour cruise. Every other cruise on this page, including the 2-hour “Two Castle” route from Ivy Lea, shows you both castles from the water but doesn’t stop — and if a passport is a concern, see our passport requirements guide before you book.

Booking practicalities

Free cancellation (up to 24 hours before departure) comes with the Gananoque, Ivy Lea and Rockport cruises on this site, while the Kingston cruise tickets are final sale. Booking early is worth doing, since weekend sunset and dinner cruises in July and August do sell out. The cruising season runs from mid-April to the first days of November, with the widest choice, including Boldt Castle stopovers, from mid-May to mid-October — see our best time for a 1000 Islands cruise guide. July and August have the warmest weather and the most departures, but they are also the busiest months; from mid-September to mid-October the islands turn red, orange and gold and the river reflects the color — our fall foliage cruises guide breaks down which route suits that window best. Most vessels are wheelchair accessible on the main deck, though washroom access and boarding ramps vary — worth confirming directly with the operator if that’s a factor for your group.

However you choose to see it — a brisk hour from Ivy Lea or a full afternoon docked at Boldt Castle — the water is really the only vantage point from which the Thousand Islands make sense as a place. Compare the options below, check current availability, and book the cruise that matches how much time, and how much castle, you actually want. If you’d rather start from a ranked recommendation than work through every option yourself, our best 1000 Islands cruise reviews and recommendations sets out our pick for every kind of traveller.