To change your Qatar Airways flight, go to the official website and click on “Manage Booking.” Enter your booking reference and last name to view your itinerary. Select “Modify Flights” to change your travel dates, times, or destination. Changes are allowed based on the fare rules of your ticket, and any applicable fee or fare difference must be paid. If you booked via a travel agent or third party, contact them directly. You can also contact Qatar Airways customer service or visit a local ticket office for help. Ensure your changes are made before the scheduled departure.
https://www.changebookings.com/change-booking/change-qatar-airways-flight