Need to Change flight with Air Canada? you can easily change your flight, but you will need to pay a change fee, which depends on the type of ticket and the destination you choose.

Air Canada Flight Change Policy

Air Canada does not allow flight changes for those with basic economy tickets after the initial 24-hour window.
For Standard fares, after the 24-hour window has passed, Air Canada charges a change fee of $100 for flights that depart in 60 days or less and $25 for flights that depart in 61 days or more. If you’re changing to a more expensive option, you will need to pay the difference in price.
For Flex fares, after the 24-hour window has passed, Air Canada charges a change fee of $50 for flights that depart in 60 days or less and $25 for flights that depart in 61 days or more. If you’re changing to a more expensive option, you will need to pay the difference in price.
For Comfort fares, after the 24-hour window has passed, Air Canada charges a change fee of $25 for flights that depart in 60 days or less and $25 for flights that depart in 61 days or more. If you’re changing to a more expensive option, you will need to pay the difference in price.
If you purchased a Latitude, premium economy, or business class ticket, you can change your ticket without being charged any additional fee. If you’re changing to a more expensive option, you will need to pay the difference in price. If you’re changing to a cheaper flight, the difference in fare will be refunded to your original method of payment.
If you need to make a change to your award ticket, you can do so up to 2 hours before the flight departs — but you will be charged a fee depending on the fare class. The fee is $100 per direction for all ticket types. This drops to $75 for those with Aeroplan Diamond status, and those with Altitude Super Elite 100k will not be charged a fee.