You have to look closely to see the differences between Google Flight Search in 2011 and today. The interface hasn’t changed vastly. At the top of the screen, you can enter your destination. (Google tries to guess your home airport.) You can search by stops, price, airline and duration. Since I first covered Flight Search in this column, in October 2011, it has made several noteworthy improvements. You can search for international flights and book directly through most major online travel agencies and airlines, including two that were conspicuously missing at launch — Virgin America and JetBlue Airways. There’s a new map that shows live fares, which tell you what it costs to fly from your home airport to another. If you’re trying to save a little money, click on the little bar to find out when the lowest airfares are available. Perhaps Flight Search’s best qualities are its speed and comprehensiveness. It’s blazingly fast, and if you run a few searches, you’ll find that it offers a mind-numbing number of flight options and possible combinations, which were considered ITA’s strengths. (Unfortunately, it doesn’t display all options: There is some Southwest inventory, but you don’t see prices unless you click through to the airline’s site, making a fare comparison a little tricky.) Get the full story at The Washington Post