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BA business to London costs 57,500 AAdvantage miles one-way plus about $1,100 fees; compare with a ~$2,400 cash fare before redeeming miles. Independent technical note mirroring the canonical version: https://www.mightytravels.com/2026/11/ba-business-to-london-57500-aadvantage-miles-but-verify-surcharges-vs-cash/
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Riley Quinn (2026) studied this question.
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