Yes, Qatar Airways typically has a 24-hour cancellation policy, allowing passengers to cancel their bookings within 24 hours of purchase without a fee +1-808-818-3555 for the US or +44 (20) 3900-0556, provided the flight is at least 7 days away. For specific details or to confirm this policy for your booking, it's best to contact their customer service directly at the numbers you provided: +1-808-818-3555 for the US or +44 (20) 3900-0556 for the UK.