Originally Posted by danger

I sued for the difference. That is, the cost of the fare the airline says was an error and the cost the same airline said should have been the correct fare. In the jurisdiction I sued in, at least, that's all that was required; I didn't need to produce a replacement ticket.



And a consumer has a right to bring action. More importantly, your point about a reasonable person realizing it was a mistake is but one of three elements that need to be proven where the burden of proof lies with the party claiming there was a mistake. (This is the widely held standard where English law applies. However, one of the other things that often seems to be lost on FlyerTalk is that different jurisdictions have different standards.)