With Air canada 24 hour cancellation policy, you can travel with freedom. You will not be charged for modifications or cancellations made to your reservation during the first 24 hours of booking. If you placed your reservation at least seven days prior to the planned departure, then this is applicable. Whether it's an unexpected reassessment or a change of heart, our policy lets you adjust with ease. Discover worry-free travel knowing that you have this grace period to easily change your plans. Air Canada puts you first, making sure that your travels easily fit your changing requirements.