Danielle DiMartino Booth, of Quill Intelligence, on the economic impact from Boeing’s grounding of 737 Max jets.
Pilots at British Airways are conducting a 48 hour strike over pay.
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That has results in the cancellation of almost all flights.
In a statement Monday, the airline said it had "no way of predicting how many (pilots) would come to work or which aircraft they are qualified to fly."
As a result, it said it had "no option but to cancel nearly 100%" of its flights.
BA said it stands ready to return to talks with pilots' union BALPA and that it is offering affected customers full refunds or the option to rebook.
The union accuses BA is making massive profits at the expense of workers who made sacrifices during hard times.
Another stoppage is penciled in for Sept. 27.
BA operates up to 850 flights a day.
The Associated Press contributed to this article.