Does a U.S. passport holder need an ETA when traveling to Canada?

No, U.S. passport holders do not need an Electronic Travel Authorization (eTA) to enter Canada.

If you are a U.S. citizen traveling to Canada by air, land, or sea, you can enter with just your valid U.S. passport. The eTA requirement applies only to visa-exempt foreign nationals flying to Canada—not to U.S. citizens.

Key Points:

• U.S. citizens do not need an eTA.
• A valid U.S. passport is sufficient for entry into Canada.
• This applies whether you're arriving by plane, car, bus, train, or boat.

For more details, you can visit the official Government of Canada website.