Transcript for Dreamliner Plane: More Comfort, Less Jet Lag

Happy thanksgiving to you. Thank you. People are on the road, flying, taking trains, whatever. If you are flying today, you could be in for holiday travel headaches. But there's a new airplane that could make your flight a lot smoother. The boeing 787, offers better air and mood lighting on flights. Jim avila has the details on the flight of the future. Reporter: The swoop-winged plastic composite plane that's changing aviation, has finally reached domestic routess holiday ason. This is generational progress in aviation. Reporter: The boeing 787 dreamliner is a hot seller. It's carbon fiber, rather than metal fuselage, gives it lighter fuel. 800 have been sold worldwide. But united is the first domestic carrier. It's smooth. It's quiet. It's got great lighting. Reporter: What's the fuss? "Good morning america" visited the boeing assembly plant outside seattle. You see the landing gear now. Reporter: Took the controls in a flight simulator in houston, where united pilots train to fly the 787. Perfect. Hold it right there. Reporter: That was a firm landing. It was good. A wet runway in the right city. So, we're good. Reporter: And joined a test flight over the mst to see for ourselves. The airlines are buying these because they're cheaper to fly, more efficient. But they're going to sell you on creature comforts, like the air itself. There's more oxygen on this plane. It's cleaner and less dry. And they have huge storage bins, too. You can fit four suitcases in here. The plastic body is stronger than metal. So, the air pressure inside can be kept at the equivalent of 6,000 feet. Instead of 8,000 or 9,000 in most jets. That leads to higher humidity in the cabin, more comfort, andless dry skin. The windows are larger. The entrance has more space. Incorrect multicolored lighting makes for a calmer feeling onboard. Helps create a sense of spaciousness above. Reporter: A new generation of planes, designed to fly longer, cheaper and with style. For "good morning america," jim avila, abc news, seattle.

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