British Airways Same Day Flight Change Policy
The UK-based air transporter likewise acknowledges flight changes on the day of movement. Passengers should roll out the expected improvements in the booking something like one hour before the planned takeoff time. Furthermore, guests aren't permitted to load up a previous flight in the event that they've actually looked at it as of now. The new flight must follow the same route, source, and destination points as per the original ticket.

British Airways 24-Hour Flight Change Policy
As far as the 24-hour policy, British Airways clients can revise their flights in somewhere around 24 hours of booking to stay away from any punishment. In case explorers miss the 24-hour window, they should bear a few charges as per the policy rules.

How to cancel a British Airways flight - your options
The first place to go if you want to cancel a flight is the 'Manage My Booking' portal on the British Airways website.
You'll need to provide the lead passenger's name and your booking reference, which you should find on your confirmation email or e-ticket¹. Here, you'll see the options available to you for amending or canceling your booking, and whether any fees will apply.
You can also call up British Airways customer services to discuss canceling or amending a flight. Have your booking reference ready and call the number available between 6 am and 8 pm consistently.

Moves toward utilizing the British Airways Manage My booking choice on the web:

Visit the authority site for British Airways Reservations and enter your ticket affirmation code as well as the first and last name of the tagged traveler.
On the off chance that you are a chief part, sign in to your record utilizing your certifications and access your booking subtleties.
Doing so will take you to the British Airways Manage booking segment to play out any of the errands referenced in the section above.
Select the kind of alteration you wish to make and afterward adhere to the onscreen directions to deal with your flight setting up for BA.
You will get an affirmation message or email with your given contact data after your undertaking is finished on the two closures.