FlyerTalk Forums - View Single Post - Y/B/M Premier Instant Upgrade - How does it work? [ended 21 Aug 2025]
Thread: Y/B/M Premier Instant Upgrade - How does it work? [ended 21 Aug 2025]
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Old May 23, 2025 | 4:08 pm
  #601  
cfischer
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Originally Posted by bocastephen
That mistake is on United - they could have used another fare class for these fares, or restricted the upgrades to Y or M and re-used B for alternate fares.
and I would argue it was ‘calculated’ rather than a ‘mistake’.
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