I believe there are even threads about this on the first page. It's called throw away ticketing and is against the contract you make with the Airline when you purchase the ticket. Failing to fly both segments gives them the right to reprice the ticket as a one-way and charge you the difference.
Originally Posted by
Boony1970
Im sure there are threads on this, but I couldnt find them.
Has anyone actually run into problems by not using the second half of a booked r/t ticket?
Im looking to do this on a lgw/ams flight on KLM (booked on delta.com)