Carry a valid Canadian passport. A passport is the only reliable and universally accepted travel document.In addition to your passport, you may need a travel authorization such as a visa or an Electronic Travel Authorization (eTA) to enter Canada. You generally need to apply for and obtain a travel document before you leave the United States. Before planning travel, please consider USCIS processing times. Type or print legibly in black ink. Domestic flights within Canada require a valid piece of government issued photo identification. International travel requires a passport. Use our Form Filler to fill out your form and print it. Flights departing Canada.