Originally Posted by
WineCountryUA
All paid published fares on UA earn miles. The one case you need to be aware is blinding bidding site like priceline or hotwire. In those case the fares may not be mileage earning.
Thanks so much for your response - I'm learning a lot about a kind of opaque issue.
I compiled a list of various online booking websites and seemingly there are some OTA's that simply do not let you earn miles.
Is this because they offer special discounted fares, that don't even show up on the mileage earning charts ? ... i.e. as stated on the MP earning chart:
MileagePlus miles may not be earned on certain United Airlines and MileagePlus partner airline tickets.
and
All other fare classes do not accrue mileage
And which would be the easiest way to learn the fare booking class on an OTA - just call and inquire ?