booking airfares online
Some airlines do not appear in search results airfares. Is there a site search that includes all airlines?
Southwest, for instance, sells online only through its own website and airfare results will not show on the engine results popular search (such as Expedia, etc.). It would be desirable to have a website that searches these websites and puts the results. Then go directly to the page Airline website and book flights. There are a lot of airlines like Southwest, which does not participate with major search engines such as Travelocity and Expedia.
Kayaking is the best, although there are airlines that do not include, for example, Southwest
