Santa Maria degli Angeli all'Aeroporto di Fiumicino is a modern parish church at Via dell’Aeroporto di Fiumicino 321, which is south-west of the train station at Fiumicino Airport on the roundabout (gyratory) junction with the Viale Fratelli Wright. The church is on the north-west quadrant of this.
It is neither in the Diocese nor the municipality, but in the diocese of Porta Santa Rufina and (with the airport as a whole) in the independent municipality of Fiumicino. However, it is included here as it serves Rome’s principal airport and can be visited if one's flight is delayed. (You might have to ask how to get there from the terminals.)
It is on a square plan, and has a saucer dome. The entrance occupies the right side of the low rectangular frontage, and the section above it is occupied by a relief sculpture of Our Lady being venerated by six angels (three on each side of her). The rest of the façade is in white, with a thin black cross on the left hand side.