IN BRIEF | Business travellers can expect more delays and cancellations to Qantas flights next month, with the warring engineers union promising "wider and longer stoppages" starting October 10.

"They will most likely cause widespread disruptions" said union official Steve Purvinas, who reportedly also told the SMH that Qantas customers should not buy a ticket from October 10.

The rolling four-hour strikes are expected to hit a  different domestic airport every second day and run for a number of weeks.

Yesterday saw Qantas cancel 28 domestic flights and scheduled delayed departures for almost as many again, in response to four-hour strikes held during the morning and afternoon peak periods.