Pretty insane fares to score some early season snow in the Pyrenees, as an added bonus you can warm up en Barca for a few days when you get there (or before you come home).
Philly to Barcelona usually runs in the $650ish range—this saves 45%+ and gets you there on Air Canada with One-Stop.
Air Canada (First bag flys free) is great as a ski flight option to Europe, particularly since British Airways pretty much disqualified themselves from consideration when they raised their fee on ski baggage to $90 each way.
$90 ski fees tend to make it much harder to enjoy El Pas de la Casa with a clear conscience:
Air Canada WILL count your skis (or board) + boots as your first free bag (unlike BA) but the second bag does run $100. If you can travel light with a backpack this is the cheapest way you will ski Europe this winter without a doubt.
While the political situation in Barcelona, following their independence 'Yes' vote, is sensitive the State Department still considers it a safe place for U.S. citizens to visit. If you are planning to visit for ski purposes, odds are you will only be in the city for a day or two so I for one still have Barcelona on my list for this year.
That said—keep an eye on it as your trip approaches.
If you prefer Lufthansa (or want more availability) there are also some flights in the low $400s starting in February. Still a great price and would be a main page deal out of Philly any other day. Snoop around, you'll find em.