MEL_Traveller
Veteran Member
- Joined
- Apr 27, 2005
- Posts
- 28,983
As I understand MPM (and correct me if I'm wrong) you are allowed to fly 25% more miles than what the direct flight would be, regardless of whether there is a direct flight or not (and regardless of whether there is availability or not).
If there was a direct flight SYD-GUM (which there is not), according to GCM it is 3289 miles - Great Circle Mapper
Therefore, if you want to go to GUM you are allowed to fly 3289 + 25% miles which is 4,111 miles. If the only way to get there is SYD-BKK-NRT/HND-GUM this is 9109 miles Great Circle Mapper which is way, way over the 4,111 miles and therefore should not be allowed.
Therefore, everyone who tries to book anything SYD-GUM via Asia (especially through Japan) should immediately be told NO, is it massively breaches the MPM. Fortunately for us many of the USDM rules (such as stopover must be *A hub and you must fly into that hub on the home carrier) are very rarely enforced and we can get away with just about anything we want.
I would not worry about MPM - if an agent says you are over MPM just HUACA. In the dozen or so agents I have spoken to in the call centre no-one has ever mentioned MPM.
I'm really hoping in the next 3 months the agents become even more lax about the rules for flights post 1 March as they know they won't have to deal with the consequences of bookings that breach the rules. I'm hoping they will give a standard 'now you know you can't change this reservation after 1 March because US is leaving *A etc etc etc' disclaimer at the start of the call and once they give that they'll let you do just about anything.
MPM is not actual mileage as per greatcirclemapper - it can vary. bcworld has produced a chart of MPMs for select origins and destinations (ex Australia) - you'll see from that the MPM for MEL-LAX is 11915 miles. Going by great circle mapper MPM+25 would only by 9901 miles. (the chart is available through a link here on AFF)
MPM was a major issue a few months ago - remember all the problems with people trying to get from east coast to LAX/SFO? They were told routings via BKK exceeded MPM. New Zealand was even worse - my friend there was told 'bad luck - no direct flights and via Asia exceeds MPM'.
This seems to have been forgotten about recently and not so strictly enforced... although still rears its head on the odd occasion.