Full article on economist.com
If you frequently shop for flights online, you will almost certainly be familiar with flight comparison websites like Skyscanner and Kayak. These so-called metasearch engines invite you to key in your desired travel itinerary, before pulling data from other websites—mostly airlines, travel agents and rival search engines—and aggregating the results into a list of available airfares. You can then orbit to the cheapest ticket and click through to the booking website. It’s not rocket science, and with a little flexibility you can usually find a bargain. But metasearch engines are not perfect. They are only as powerful as the data that feed into them, and some airlines refuse to cooperate...
