FlyerTalk Forums - View Single Post - Upgrade from WTP to Business using Avios - estimated taxes?
Old Jan 25, 2022 | 5:47 am
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Originally Posted by croydonflyer
Thank you!

So I made a dummy cash booking, single flight, NYC to LON, in WTP.
Cost is $566.80 (of which fare $277.00, i.e. charges are $289)

I then made another dummy cash booking, single flight, NYC to LON, in business.
$3,379.80 (of which fare $2,650.00, i.e. charges are $729)

Difference in charges is 440 USD = 327.14 GBP

Does this sound about right? Correct procedure to estimate fees and taxes?

Doesn't matter that my actual booking will be upgrading one leg of a flight?

Can this usually be upgraded online?
Worried about online option not working and no one able to do it over the phone.
No, you need to price up a return booking with WT out and WTP back, and then a return booking with WT out and CW back - then compare the difference in taxes/fees/charges between those two.

You can book the underlying cash fare online then go in to MMB and upgrade with avios.
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