United Airlines, Air Canada and Lufthansa offer another fare attack on AA’s PHL hub for cheap $400s tickets to several cities in Italy like Venice, Florence, Naples, Milan and more. Fares are $409 on united.com for departures mid-March to mid-May and from $416 to $456 from August 25 to Oct 24. You may find slightly lower fares in the $390s through online travel agency sites.
United to Milan includes Amtrak train service between Philadelphia and Newark Airport EWR with a nonstop flight between EWR and Milan, Italy MXP.
There are also Air Canada and Lufthansa operated flight options in low to mid-$400s round trip, bypassing the train segment. These are the primary tickets available in late summer 2017.
Skyscanner.com search pulls up TravelMerry.com online travel agency
Air Canada Philadelphia PHL – Montreal YUL (all day layover) – Venice, Italy VCE
Lufthansa Airlines Venice VCE – Frankfurt FRA – Philadelphia PHL
United Airlines Philadelphia ZFV (train) – Newark EWR (UA) – Milan MXP – Newark EWR – Philadelphia ZFV (train)
United Airlines ticket for Lufthansa and Air Canada operated flights Philadelphia PHL – Frankfurt FRA – Milan MXP – Toronto YYZ – PHL
$444.56 round trip Fri Aug 25 – Mon Sep 4 (all Air Canada flights are $416 round trip).