Process for how to use air canada travel voucher is that first find out how much money is left on your trip voucher.
Go to the Air Canada website and conduct a flight search.
Choosing your flights will take you to the payment page.
Choose "Gift Cards and Vouchers" as your payment option on the payment page.
In the appropriate fields, type your voucher number and the security code.
To add the voucher to your reservation, click "Apply".
If the voucher does not fully cover the cost of your reservation, the remaining balance may be settled using a credit card or another form of payment.
Complete the purchase and confirm your reservation.