It’s best recommended to buy the Visitor Insurance/Travel Medical Insurance in the planning phase of the trip or before you start the journey. You want to make sure coverage begins from the beginning of your trip. If the plans change, you can cancel the policy for a refund. You don’t want to wait for the last moment and forget buying it, which usually happens as travelers get busy in packing, shopping and researching the places to visit. Click here to check the Visitor Insurance Plans.