Round trip tickets much cheaper than one ways, considering purposely missing layover? [duplicate]

Round trip tickets seem much cheaper than setting up multicity one way in and one way out from a different city... It is looking like it is cheaper to buy round trip tickets going to/from my final exit city, then bail out onto another plane on the layover in the same country, much closer to the first city I want to go to, then end up in my exit city, taking the exit flight out. Has anyone done this before? Would having a flight arranged in the layover city attract any unwanted attention?

Edit:

I want to enter Beijing and leave out of Hong Kong. It looks cheaper to round trip it to Hong Kong and bail out in Shanghai on the layover.

Both tickets would be used, this is not a duplicate as suggested. I just didn't want to finish the entire first leg of the journey. Since the return flight would be canceled as in the answer I guess it won't work.

Pictures about "Round trip tickets much cheaper than one ways, considering purposely missing layover? [duplicate]"

Round trip tickets much cheaper than one ways, considering purposely missing layover? [duplicate] - Blue Luggage with Folded Clothes

Round trip tickets much cheaper than one ways, considering purposely missing layover? [duplicate] - Back view of unrecognizable people in casual wear standing near ticket office in public place

Round trip tickets much cheaper than one ways, considering purposely missing layover? [duplicate] - Cityscape with circle junction and roads between buildings

What happens if you purposely miss a connecting flight?

Why You Should Avoid Skipping a Flight. One of today's most hardened airline rules says that if you miss or cancel any portion of a plane ticket, the airline can cancel all flights remaining on that ticket's itinerary. When you miss that first flight, whether or not you cancel or no-show, the entire ticket becomes void ...

Is a round trip ticket cheaper than two one ways?

When traveling within the U.S., airlines typically price one-way flights at exactly half the cost of a round-trip. There certainly are exceptions, especially for those that fly out of smaller, regional airports.

Why is it cheaper to buy round trip than one way?

One of the main reasons that one-way tickets can be so expensive is because they're often purchased by business travelers who have rigid date/time requirements and are less sensitive to price.

Why do you pay twice for round trip?

By keeping one-way flights more expensive, airlines are able to get extra revenue out of the business travelers who can't book their return flights as far in advance, and are willing to pay more for that flexibility.

Round trip flights are a SCAM (Usually) + Other travel hacks | Travel Thursday

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Dids, Kindel Media, Maxim Titov, Kelly