If you want a little adventure, you might look into flying to London and taking the train to Paris. Last year my wife and I did that (BusinessFirst) and the fare difference between Washington-Paris and Washington-London was big enough that it paid for both the chunnel train (Eurostar First Class), our 4-star Paris hotel, and a night in London on the way home.

In any case have a great trip. My wife calls Paris an adult Disneyland.