The weather might not be much better in Europe, but fares there can be less than half off peak summer prices. (And let’s be honest, who goes to London for the weather anyway?) Round-trip airfare from the Northeast to Dublin, London and Paris starts at $195, plus tax (check travelocity.com). Seven-day air-hotel trips to England, Scotland and Paris go for $479 to $509 through March. Or fly to Florence for five days from $429. Traveling for business? You can earn a free ticket anywhere United flies if you book two business or first-class round-trip flights between the United States and Europe before April 15. Delta and American offer similar incentives stateside. Travel twice before April 15 from Boston or New York to one of more than a half-dozen cities in Florida and California and win a free trip. But beware: discount fares don’t always qualify for this promotion, so check before you buy. And book soon, before the fares–and the temperatures–go up.