make when booking trips? let's ask tom parsons, the ceo of best fares.com. all right, tom, lay it on us. >> well, one of the things that people don't realize, not all airfares are created equal, so if you're on one of the airlines' websites and you're booking a family of four, you should always see what the price is for a single traveler first, because if there's only three seats left on the lanes you're looking at and you book four, it will sell you a fare maybe $30 or $40 higher not for one person, but for the whole group. so if you need three seats and they've got three left, you may have to pay $20 more, but price it always with a single traveler and you might save money if there's only a few seats left on those flights. >> you shouldn't book hotel and air together, don't do that? >> you should do that. >> you should do that? >> yeah, because out of los angeles right now to las vegas, the cheapest airfare for a