Was also wondering about this. We have a flight that leaves the Barcelona airport for the US at 11:15am on a sunday in late September. Any later flights would have meant very, very long layovers and not arriving home until the next day. The ship docks at 5am, so I would like to have a car waiting to drop us at the airport. I see the three suggestions above for booking private transfers, so i will investigate them. Does anyone have any other suggestions for private transfer/taxi companies that are also good and reliable? This is our second time cruising from Barcelona. The first was back in 2009 but I cant remember flight times or if we had an delays, etc. Thanks for any info!