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Old Nov 4, 2014 | 2:12 pm
  #849  
benzemalyonnais
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Any advice for upgrading EWR-IAH-HNL-GUM-HKG-SGN and back on a K fare?

From my research it seems that EWR-IAH-HNL can be UGd with a RPU. HNL-GUM can't be upgraded with anything since it's a K fare, but I'm not sure about the GUM-HKG and HKG-SGN segments.
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