What type of flight plan must be filed for a VFR flight from Canada to the USA?

For a VFR flight from Canada to the USA, the correct type of flight plan to file is the NAV Canada flight plan. This type of flight plan is necessary for delineating a VFR flight and ensuring that authorities are informed of your travel route, departing and arriving airports, and other critical flight details.

The filing of a NAV Canada flight plan is crucial for maintaining safety and communication between the pilot and air traffic control, especially when crossing international borders. It serves to alert authorities to your flight intentions, helping in search and rescue operations and ensuring compliance with both Canadian and U.S. flight regulations.

The other options do not serve the purpose required for flying from Canada to the USA. A Canada Flight Plan is generally focused on domestic flights within Canada. A U.S. Flight Plan would typically be required if flying within U.S. airspace, and an International Flight Plan, while relevant in certain contexts, does not specifically apply to VFR operations as it is more associated with IFR flights. Therefore, filing a NAV Canada flight plan is the most appropriate course of action for this VFR flight scenario.