FlyerTalk Forums - View Single Post - extra costs when upgrading using GUF 2
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Old Jul 3, 2017 | 6:04 am
  #7  
chris1979
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Join Date: Apr 2005
Location: London
Programs: BA Lifetime Gold & GGL & CCR, HH Diam, Bonvoy Titanium, IHG Spire, Tastecard
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the other reason could be that some new fares (dual inventory) can't be accessed over phone nor work with TA and even with ba.com upgrades.

I had a situation where the ticket I was looking at in WTP showed as £515 ish and there was UUA space but whenever I tried to book as 'book and upgrade using avios', it jumped to £1200 ish. I called and that's the only fare the agent could find.

so agent and I agreed that I should just book the £515 fare, then call back and UUA and it worked a treat.
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