The DOT enforcement policy on mistaken fares
On April 25, 2011, the Department of Transportation issued a final rule on enhancing airline
passenger protections which included a provision prohibiting airlines and other sellers of air
transportation from increasing the price of air transportation after a purchase has occurred (the
post-purchase price increase prohibition). See 14 C.F.R. § 399.88. Under section 399.88, a
purchase occurs when the full agreed upon amount has been paid by the consumer.On June 15, 2012, the Enforcement Office issued Answers to Frequently Asked Questions about
the application of the post-purchase price increase rule to mistaken fares. Mistaken fares are
offers by an airline or other seller of air transportation to sell tickets for air transportation for a
fare that is usually substantially lower than the intended ticket price for the class of service being
sold.
Emphasis mine.
My interpretation: since this is not a mistake fare it falls under 14 CFR 399.88 – Prohibition on post-purchase price increase and AA is on the hook to deal with Dragonair. But: IANAL and I am not even playing a lawyer on television.
Credit:stackoverflow.com‘