TRY ZINC FREE SUPER POLIGRIP. Now a kind of truth or dare, 2 million americans a day travel by airplane for work or vacation. Travelers don't know if they paid a lot more for their ticket than someone... See More
TRY ZINC FREE SUPER POLIGRIP. Now a kind of truth or dare, 2 million americans a day travel by airplane for work or vacation. Travelers don't know if they paid a lot more for their ticket than someone smart sitting right next to them. We ask are you getting the best deal? Reporter: Everyone knows that ticket prices vary but here in atlanta we were surprised to find a spread of more than $600 for the same ticket. How much did you pay for your ticket? Round trip $240. A little over $600. This man got us scratching our heads. A grand total of $481.60. When did you book that? About three weeks ago. Would you be really disappointed to know the lady sitting right there on the end paid about $250. I would be disappointed. She booked two weeks ago on expedia. Wow. Delta told us fares are determined by market supply and demand and due to government regulations they couldn't discuss it further. I guess I better get on this flight now. Once we started asking -- do you guys remember how much you paid for your flight ticket? 50,000 points. People couldn't stop talking about it. How much did you pay for your ticket? 280 to 300. 259. Per person? What's the reason for all the prices? For answers we went to this little guy. Don't know him? He's hip munk, the face of a travel site that makes it their business to find out the prices. People are willing to pay different amounts depending on different thinks. They're taking full advantage. Reporter: Prices product wait all day long. There's no great way to gain the system. Incredible range of prices you showed us there so you said there are a couple of tips that really do work. The old stand by of big early, 21 days in advance and you want to try t stay over saturday night if you can. Stay over saturday. Should make a difference. Everyone, be sure to watch lindsey tonight for more of her report on the lookout at 10:00 p.M. Eastern.
This transcript has been automatically generated and may not be 100% accurate.