The best time of year to visit Churchill to see the polar bears is from mid-October to mid-November. During this time, the polar bears gather near the town of Churchill as they wait for the sea ice to form on Hudson Bay, which they need to hunt for food. This makes it the perfect time for visitors to observe these magnificent creatures in their natural habitat. Many tour operators offer guided tours during this time, including tundra buggy tours and walking tours. It's important to note that the weather in Churchill during this time can be cold and unpredictable, so visitors should be prepared with warm clothing and gear.

The best way to get to Churchill is by air or by rail. Churchill is not connected to Canada's road network, so driving there is not an option.

By air: The easiest and most common way to get to Churchill is by air. Several airlines offer direct flights to Churchill from Winnipeg, which is the closest major city. The flight time is approximately two to three hours. Flights are also available from other cities such as Edmonton and Calgary.

By rail: Another option is to take the train to Churchill. Via Rail Canada operates a train service from Winnipeg to Churchill, which takes approximately 2 days and 1 night. The train journey is a scenic and unique way to travel to Churchill, with stunning views of Canada's wilderness along the way.

It's important to note that both air and rail travel to Churchill can be affected by weather conditions, especially in the winter months. Visitors should be prepared for potential delays or cancellations, and should plan accordingly.