Originally Posted by
iapetus
The cost of the train is €14. The cost of a taxi is €48. And the taxi gives you the benefit of being dropped off in front of the terminal, as opposed to having to make the (admittedly not-so-long) walk from the train station. If I were that concerned about making my flight, it would be worth the €34 differential to me.
I fully, absolutely and 100% agree with the above! And it there's two of you, as is often the case with award flights

the price difference will only be €20. By the way, a cab at around 5-5:30 am would take about 30 minutes from Termini to FCO, maximum!