Where can I find my ticket number?

Confirmation email (e-ticket receipt)

If you booked directly with British Airways, your ticket number will be listed under Payment Information. If you booked with another retailer or travel agent, it may be listed under a different heading.

Mobile app for iPhone
Mobile App (iPhone)

Your ticket number is listed with your flight's details under 'My bookings'. Past bookings are kept for one month. Ticket numbers are also shown on the mobile boarding pass. If you used this feature for any past flights, these may be saved in your Apple Wallet.

Mobile app for Android
Mobile App (Android)

Your ticket number is listed with your flight's details under 'My bookings'. Past bookings are kept for one month.