Last night and this morning I tried to book a trip LHR-PEK, PEK-HKG, HKG-LHR but when I came to pay. I am in the UK using a UK mastercard, using the chrome browser.

I got the following error messages:

On a otherwise blank webpage

21000230:Request 7358479, VALUE null OF FIELD ORDER.COUNTRYCODE IS TOO LONG (MAX LENGTH: 2)

and then on the Air China website

We have difficulty with the finalisation of the external payment. Please call the financial institution that issued your credit card. (4686 - 4685)

I suspect that it is a problem with their payments solution. My card issuer says all is fine their end and they have not been presented with a request.

Has anyone else had this problem? Anyone booking OK?