Isle Royale National Park is one of the most remote and least-visited national parks in the contiguous United States — a rugged, roadless island archipelago rising from the cold depths of Lake Superior, hard on the Canadian border between Michigan and Minnesota. The 45-mile-long, 9-mile-wide island has spectacular boreal forest, one of the densest moose populations in North America, world-class kayaking, and some of the most secluded backcountry campsites anywhere in the country.
Getting there takes planning and money. Because Isle Royale is only reachable by ferry or floatplane, your transportation costs will be the biggest single budget item of the trip. This guide breaks down every cost you can expect for a visit, with current 2025–2026 pricing.
A Few Things to Know First
Isle Royale is the only national park in the United States that closes completely every winter. The park is open from approximately mid-April through October 31 each year; the island is inaccessible in the off-season. If you want your national parks passport stamped in the off-season, the visitor center in Houghton, Michigan remains open year-round on weekdays.
Isle Royale consistently ranks as one of the least-visited national parks in the country, drawing roughly 18,000–28,000 visitors per season — a small fraction of what parks like Yellowstone or the Grand Canyon see. That seclusion is a feature, not a bug: the backcountry here is genuinely wild and quiet in a way very few places in the lower 48 can match.
Some key island facts worth knowing: The island’s highest ridge, Greenstone Ridge, runs the length of the island at roughly 1,000 feet above lake level. The terrain is primarily volcanic and sedimentary rock. Isle Royale was heavily mined for copper in the 1800s — Native Americans worked copper here as early as 6,000 years ago — and logged in the same era, but both activities ceased when it was designated a national park in 1940. Today the island is one of the most studied wilderness ecosystems in the world, primarily because of its long-running moose and wolf research program.
Park Entrance Fee
The National Park Service charges $7 per person per day to visit Isle Royale, for visitors age 16 and older. Children 15 and under are free. The fee is charged for every day you are on the island, including your arrival and departure days, so a four-night trip costs $7 × 5 days = $35 per adult.
If you are planning a longer stay or visiting with a group, consider the Isle Royale Season Pass at $60 — it covers the pass holder and up to three additional people for the entire season. The America the Beautiful National Parks annual pass ($80) also covers the entrance fee. You can pay the entrance fee online in advance at pay.gov (search “Isle Royale”) or at the ranger station when your ferry arrives. Rangers will check for proof of payment when you pick up your backcountry permit.
Getting There: Ferry Options and Current Prices
Unless you arrive by private boat or chartered floatplane, you will take one of four ferries to Isle Royale. Which ferry you choose depends on where you want to start your trip — Rock Harbor on the eastern end of the island, or Windigo on the western end — and where you are departing from. Book well in advance: ferries sell out during peak season (July and August especially), often months ahead.
Ranger III — Houghton, Michigan (NPS-Operated)
The Ranger III is the least expensive ferry option and the only one operated directly by the National Park Service. It departs from Houghton, on the Keweenaw Peninsula in Michigan’s Upper Peninsula, and travels to Rock Harbor on Isle Royale’s eastern side. The crossing takes approximately six hours each way, making it a full travel day. The ship carries up to 128 passengers and offers a galley café on board.
The Ranger III departs Houghton on Tuesdays and Fridays at 9:00 a.m. and returns from Rock Harbor on Wednesdays and Saturdays at 9:00 a.m., operating roughly from late May through mid-September. Parking in Houghton is free for ferry passengers. Current adult round-trip fare is approximately $160. Check the NPS Isle Royale website (nps.gov/isro) for the confirmed 2026 schedule and exact pricing, which is released in late winter/early spring each year.
Isle Royale Queen IV — Copper Harbor, Michigan
The Isle Royale Queen IV (operated by Isle Royale Line, Inc.) departs from Copper Harbor at the tip of the Keweenaw Peninsula and arrives at Rock Harbor — a roughly three-hour crossing. It operates from mid-May through late September, with daily departures during peak summer and reduced service in the shoulder season. Note that the 8:00 a.m. departure from Copper Harbor typically requires an overnight stay in town the night before, unless you are driving up very early.
2025 prices: $175 round trip for adults; $125 round trip for children ages 1–12. The Queen IV is the only ferry that offers day trip service to Isle Royale, allowing you about 3.5 hours on the island before returning — a useful option if you want to experience the park without a multi-day commitment. Kayaks and canoes may be transported for an additional fee. Parking in the ferry’s private lot costs $10 per night. Reservations are strongly recommended; book at isleroyale.com.
Sea Hunter III and Voyageur II — Grand Portage, Minnesota
Both the Sea Hunter III and the Voyageur II depart from Grand Portage, Minnesota, just six miles from the Canadian border — the closest departure point to the island. Both are operated by Grand Portage Isle Royale Transportation Line (isleroyaleboats.com).
The Sea Hunter III makes a quick 1.5-hour run directly to Windigo on Isle Royale’s western end, offering the shortest and most affordable crossing. Current one-way adult fare: $110.50; children under 16: $100.50. Day trips (over and back the same day) are available at $120.50 per adult. This is the most budget-friendly option for a full stay if you want to focus your trip on the western side of the park.
The Voyageur II circumnavigates the entire island over two days, making stops at multiple points along both the north and south shorelines between Grand Portage and Rock Harbor. This makes it the ideal ferry for point-to-point backpacking trips — you can board at Windigo and exit at Rock Harbor (or vice versa), or get dropped at interior stops like Chippewa Harbor or McCargoe Cove. Rates start at $87–$110 one-way depending on your destination. Canoes and kayaks can be transported for an additional $55.25 each way.
Grand Portage parking costs $5 per day, paid to the village upon your return.
Seaplane
Isle Royale Seaplanes offers the fastest option — a roughly 35-minute flight from Houghton to either Rock Harbor or Washington Harbor (near Windigo). It is by far the most expensive way to reach the island, with round-trip fares typically around $300 per person or higher. It’s worth considering if your time is severely limited or if you need to exit the island quickly in case of an emergency or schedule change.
Lodging: Rock Harbor Lodge
The only developed lodging on Isle Royale is Rock Harbor Lodge, which offers 60 four-person rooms and 20 lakeside housekeeping cottages. It is the only place on the island where you can stay without tent camping, and it books up well in advance for summer dates. Lodge rooms and cottages are priced in the mid-to-upper range for national park lodging; check rockharborlodge.com for current rates and availability. The lodge also operates a restaurant and small camp store with snacks and basic supplies.
For a look at how Rock Harbor Lodge compares to other iconic park lodging options around the country, our guide to the best national park lodges in the U.S. puts it in full context.
Camping
The vast majority of Isle Royale visitors camp. There are no fees for backcountry campsites beyond the daily park entrance fee — a free permit is required but camping itself is free. Campsites are first-come, first-served and cannot be reserved in advance for individual tent sites (groups of seven or more should make a group reservation in advance).
When you arrive, stop at the ranger station at Rock Harbor or Windigo and pay your daily entrance fees. You’ll also give the rangers your planned itinerary, indicating which campgrounds you intend to use each night. Because most campgrounds have only 3–6 individual tent sites, the rangers may ask you to adjust your itinerary if your preferred sites are already at capacity. Have a backup plan ready.
Several campgrounds also offer three-sided wooden shelters in addition to tent pads — get in line early at the visitor center if you want the best chance of securing one. Most campgrounds near the visitor centers have a 1–2 night stay limit, so anyone planning a week-long trip will need to hike and move between sites. Inter-campground distances typically range from 2 to 10 miles, making route planning an important part of the trip preparation process.
All campgrounds have pit toilets and water sources, though all surface water on the island must be treated or filtered before drinking. There are no garbage cans anywhere on Isle Royale — all waste must be packed out. Because open fires are restricted at most campgrounds (check the current NPS rules for which sites permit fires), plan your meals around a camp stove. Rock Harbor has a small camp store selling snacks and basic food; the Windigo store sells cold sandwiches and snacks. For a full approach to backcountry food planning, our guide to foods that travel well without refrigeration and our backpacking dishwashing guide are both useful pre-trip reads.
Kayak and Canoe Rentals
Kayaks and canoes can be rented at Rock Harbor. Canoe rentals run approximately $20 for a half-day; single sea kayaks cost roughly $30+ for a half-day. Paddling is a superb way to explore the intricate island chain around Rock Harbor, where dozens of small islands and hidden coves are inaccessible by trail. That said, be aware that Lake Superior’s conditions can shift rapidly — wind-driven swells and cold water temperatures require genuine respect. Stay close to sheltered water if you are not an experienced paddler. The Rock Harbor rental staff can advise on safe routes for your skill level.
Fishing and Scuba Diving
Fishing is permitted throughout the park. Anyone fishing in Lake Superior itself needs a valid Michigan fishing license, available online through the Michigan Department of Natural Resources. No license is required for fishing in the island’s interior lakes. Isle Royale’s waters hold lake trout, northern pike, yellow perch, and other species.
Scuba diving is also permitted and the park contains a remarkable collection of intact historic shipwrecks in the cold, clear Lake Superior water — the combination of low temperatures and freshwater means visibility and preservation are outstanding. The most visited wrecks include the America, the Chester A. Congdon, and the Henry Chisholm.
The Wolves
Isle Royale is world-famous for its decades-long study of moose and wolf predator-prey dynamics — the longest running such study in the world. By 2018 the wolf population had crashed to just two individuals due to inbreeding, disease, and other factors, prompting the NPS to undertake a major wolf reintroduction effort. As of 2025, the Isle Royale wolf population has recovered to approximately 20 or more animals, making wildlife-watching prospects considerably better than they were a few years ago. Wolf sightings by hikers remain rare — the animals are elusive and wary of humans — but their presence is felt through howls, tracks, and the signs of predation on moose across the island.
Sample Trip Budget
To put all the numbers together, here is a rough budget for a 4-night trip for one adult taking the Queen IV from Copper Harbor:
Ferry (round trip): $175. Park entrance fee (5 days × $7): $35. Overnight in Copper Harbor before departure: approximately $100–$150. Camping on the island: free (permit required). Food and supplies: varies. Total transportation and park fees: roughly $210–$260 per person before food, gear, and accommodation at either end. The Ranger III from Houghton is the more budget-friendly ferry at approximately $160 round trip with free parking, at the cost of a longer crossing and less flexible schedule.
For any multi-day wilderness trip to Isle Royale, packing well is essential. Our hammock camping guide is relevant if you are considering that option on the island, and our road trip packing list covers the essentials for the drive to either Houghton or Copper Harbor.
Have you visited Isle Royale? Share your cost tips and trip notes in the comments below — especially any recent ferry price updates!
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