Man, it's a small world... I'm in Buenos Aires in the middle of an itinerary that will take me to SYD from Santiago before I return to LAX in a couple weeks... I was booking some BA intra-European travel on my laptop tonight and checked prices on Opodo and the BA and AA websites on the exact same flights, dates and times... I ended up booking the flights on the AA US website, since the final pricing in USD at the present exchange rate was almost GBP10 less than if I booked on the BA website and certainly less than Opodo. I'm not sure as to why the difference?