Originally Posted by
WineCountryUA
Yes, from time to time, there have been inventory / pricing anomalies where PP is cheaper the regular economy. Some are real, some disappear as you complete the rest of the flight search (such as return leg).
I successfully booked a PP for less than economy on a open jaw routing. In my experience, these case are related to some routing / inventory edge conditions.
I thought it was odd that it was so much cheaper than economy, but even odder that the pricing went away adding a second passenger to the itinerary, despite saying 3 or 4 tickets remaining at that price.
It was open jaw, so that may have had something to do with it as well.
The price stayed when looking at return flights, but I did not click all the way though to try to ticket it, so it may have errored out trying to finalize the booking.