American Airlines is one of the airlines that’s helping to make travel in Europe more affordable for those of us departing from the United States by offering up a new set of sale fares to various big European cities. And rather than just being a sale on winter tickets, this one is good on departure dates through April 2, 2009 – so you can take advantage of great prices and maybe even get some nice early Spring weather in Europe.

Some of the round-trip fares that are available on this American Airlines deal are:

• New York-London – $407
• Boston-Dublin – $483
• Miami-Milan – $491
• Philadelphia-Madrid – $549
• Los Angeles-Paris – $573

You’d expect great Europe fares from cities like New York, Washington DC and Boston – but it’s great to see departure cities like Phoenix, Seattle, and Philadelphia on this list, too. To grab these low fares, you’ll need to book your trip by December 31, 2009, and your travel days will need to be Monday-Thursday. There are a few other terms and conditions you’ll need to read before you book your tickets to make sure these tickets work for you, but it’s definitely a sale you want to check out if you’re contemplating a Europe trip anytime soon.