UA will tell you these numbers you see after booking are just estimates. IME, these mostly are the same as what posts at the end. The system has screwed up for me in last minute IRROPS changes, though a quick call has always gotten me back to what it was supposed to be. The only other real difference I’ve seen is how the specific segments add up on multi-segment trips. The breakdowns sometimes change, but aside from something like PQD on a segment rounding up vs. down, the system has always given me the correct total miles.

To check what it should be, on your e-receipt, look at the airfare line, plus fuel surcharges (YQ) line if applicable on your trip - that should add up to your total PQD for the trip. If it doesn’t, then something posted wrong, and a call to the MPSC should fix it. Then use the multiplier based on your status for RDM

Also, if this was the outbound of a round trip, breakdown may be different, and the lower amount you got now may be made up for with a higher amount on the round trip. This is particularly true if the fare classes for outbound and return are different.

So the questions I would have before being able to give the most accurate answer is what is the full itinerary booked (including connecting flights)? What have you flown so far? What was the total cost of airfare and YQ? And what is your status. I’d hang on before all segments on the trip post to call in - the amount will likely be made up for a later. At least that’s my experience.