Yes, you can cancel airline tickets. However, the cancellation policy and any associated fees vary depending on the airline and the type of ticket you've purchased. It's essential to review the airline's specific cancellation policy before making any changes. Some tickets may be fully refundable, while others might incur a cancellation fee or be non-refundable. If you've purchased travel insurance, it may cover certain cancellation reasons. Always contact the airline or your travel agent directly for specific details and guidance.