Understanding the United Upgrade List Comprehensively - FlyerTalk
https://www.flyertalk.com/forum/united-airlines-mileageplus/1550031-understanding-united-upgrade-list-comprehensively.html
WebJan 6, 2023 · FlyerTalk Forums Expert How-Tos and Guides. UA has multiple methods for upgrading to a higher cabin. Examples include: Economy to Domestic First, Economy to International Business or Business (ex-p.s. flights) or Economy to Premium Economy ("Premium Plus"). In this regard, seating in Economy Plus is considered Economy.
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