Air Canada $477, DL $492, LH $542 Philadelphia to Barcelona or Madrid Dec-May

Star Alliance and SkyTeam are attacking American Airlines and Oneworld Alliance partner Iberia from Philadelphia with low fares to Spain for travel departures early December to May 10. Air Canada is as low as $477 round trip, although Lufthansa seems to have better schedules at $542 round trip.

Delta and SkyTeam Alliance airlines also have low fares down to $492.

American Airlines has $495 round trip flights from New York JFK to Barcelona.

Air Canada  Philadelphia – Montreal YUL – Barcelona BCN– Montreal YUL – Philadelphia

$477.15 round trip  Friday April 21 – Saturday April 29

Lufthansa Airlines  Philadelphia PHL – Frankfurt FRA – Madrid MAD – FRA – PHL

$542.31 round trip  Fri April 21 – Saturday April 29

Delta Airlines  Philadelphia PHL – New York JFK – Barcelona BCN – JFK – PHL

$491.76 round trip Wed March 1 – Fri March 10

American Airlines  New York JFK – Barcelona BCN – JFK

$477.16 round trip  Wed March 1 – Fri March 10

Loyalty Traveler curated Airfare Deals and Google Flights and Kayak Explore tutorials.