Yes, you can absolutely fly domestically within Canada without a passport, provided you are a Canadian citizen or permanent resident. The Canadian government requires travelers aged 18 and older to present one piece of valid, government-issued photo identification that includes their full name and date of birth, such as a provincial driver's license or a permanent resident card. Alternatively, you can present two pieces of non-photo government-issued ID, at least one of which must show your full name and date of birth (e.g., a birth certificate and a health card). For travelers under the age of 18, identification is recommended but not strictly required for domestic flights, though many airlines suggest carrying a birth certificate or provincial health card for infants. For 2026 travel, it is essential to ensure that your ID is not expired and that the name exactly matches the name on your flight reservation to avoid high-fidelity security delays at the airport boarding gate.