Changing a flight without paying a fee can be a tricky task. By using the following hacks you can easily get to know how can I change my flight without paying a fee.
Change your flight within 24 hours: Try to make your decision within 24 hours of the purchase. Airlines allow a free change within 24 hours of the booking. So changing a flight within the given time span will make you eligible for a free flight changing.
Do it at least 60 days before the actual departure: Many airlines allow a free change of flight if you do it before 60 days of the actual departure. You just need to contact the customer service to know if the airlines in which you have a booking have this policy or not.
Buy a flexible fare ticket: If you are not sure about your travel then buy a flexible fare ticket. This will cost a bit more than the normal or standard ticket but most of the airlines allow a free change of flight if you have a flexible fare ticket.
For more details on how can I change my flight without paying a fee, you can go through the change policy of the airlines you have a booking in or planning to book in. You can also contact the customer care service for detailed information about the change policy of the airlines.