After looking for a possible TP run for later this year from MCO I stumbled across MCO-MIA-LAX-HNL in A for £1161 which I thought was pretty good value. However, the aa.com site drives me mad - I put the itinerary On Hold and when I went to purchase it gave me a lower price BUT when I went to the payment screen the fare had increased by an additional £100 each - no explanation and certainly not a credit card charge or the US taxes I have seen this happen before - is it better to book these at ba.com?