Hi folks.

I just booked a ticket with BA, heading to Australia. I was going to book it on the Qantas website, but they didn't accept my type of debit card so I had to use the BA website.

The thing that confuses me is on the BA website it's listed as flight number BAxxxx, whereas on the Qantas website it's QFxx. On the BA website however it says the flight is being operated by Qantas.

Now, presumably it is the same flight. Departs at the same time, lands at the same time, same stop over destination, etc. A quick google search for both numbers comes up with the same flightstats.com results.

Is there a reason why both websites would have different flight numbers for the same flight?

Much thanks.