Was BA within its rights to cancel the tickets?
Whether BA was entitled to cancel the tickets is likely to depend whether they were so cheap that the so-called mistake should have been obvious to customers.
If they were miles cheaper than comparable tickets, the company could argue that it made a "unilateral mistake" in its pricing.
佐賀から東京飛行機But the difficulty for BA is that a quick search online reveals flights from London to Tel Aviv to be on sale for around £215. So the BA fare of £195 may not seem unusually good value.
James Daley, managing director of Fairer Finance, thinks BA may be in the wrong.
"I don't understand how, technically, they could wriggle out of it. It's their error," he said.
However, it may take a legal challenge from one of the passengers involved to fully test the law on this.
Presentational grey line
Hanna Simon, another passenger, also said she did not believe the flights were "excessively cheap".
She said she was particularly frustrated as she had corresponded with BA about add-ons to her flight and no problem had been raised by the airline.
Several people the BBC spoke to also said they had not been informed of the cancellation and only found out when they checked their online accounts.
They also said the £100 voucher was "useless" as, aside from "restrictive" terms and conditions, the flights were now costing much more than that.