KLM 24-hour cancellation policy would only apply to flights originating to / from Canada and the USA. Airlines allow passengers to change or cancel the reservation within 24 hours of purchase, so there will be no cancellation fees from KLM. Here are some of the important points to consider before making your KLM cancellation request within 24 hours Before canceling your reservation, you should go through KLM Cancellation Policy Before canceling your reservation, you should think about the following a) You can only withdraw refundable tickets. Also, he shouldn't have used them beforehand. b) Make sure you bought your ticket with only one credit card. c) The issue date must be more than five days ago. d) Once this is done, you cannot reverse a cancellation or refund. So be careful. e) Refunds made by KLM in accordance with their fare rules. So, make sure you get to know them. f) Be prepared for any additional processing fees that your bank may charge. g) In addition, it will not take more than 14 to 30 business days. h) If you do not use the "manage my reservation" function, KLM may charge you a non-refundable global service fee. i) You will receive a refund in a similar way to the one you paid. In case you have done it in cash, you will receive a check. Similarly, in the case of a card, you will receive it in your bank account. So, if you want to cancel your airline tickets from India to the US, be sure to consider these points before doing so.