Does British Airways have a 24-hour number?

The airline does have a 24 hour phone number but only valid for passengers residing in the UK. If you have no idea "What is the 24 hour line for British Airways?" dial +18037163480 (OTA) (0845 77 333 77) and someone from customer service will get immediately connected with you. Passengers who wants to communicate from any other country, can visit the airlines website to get the contact number details but they may not offer 24 hour assistance.