FlyerTalk Forums - Mileage credit for IRROPS / diversions / return to airport / .... ?

Flight credit in irrops situation

For diverted and then continued to destination -- generally just the standard credit, no extra for the diversion. Some possibility if diversion is overnight and a special section is scheduled, then separate flight credit
For very indirect flight plan (such as to avoid weather) -- nope (especially in the case of fare based crediting)
For return to base -- it is as if the flight never happened.
Planned rerouting, With fare based credit, no change but should get the extra segments credit. If the rerouting reduces the segment credit, request ORC.

For lifetime miles, again generally just the originally booked credit