The British Airways strike next month is to cause at least five consecutive days of flight cancellations.
BA pilots announced three days of strikes – taking place on 9, 10 and 27 September – in a dispute over pay.
Despite the first strikes being on 9th and 10th September, some customers flying between the 8th and 12th have been told their flight has been cancelled – and to rebook or get a refund.
One customer told the BBC their flight on 25th September had been cancelled.
Many people have said they have been unable to get through to BA to make alternative arrangements.
BA says it carries 145,000 customers every day – with a fleet of more than 280 aircraft – and a BA plane takes off from somewhere in the world every 90 seconds.
BA said in a statement: “We are doing absolutely everything we can to prevent this unfair action from taking place and ruining our customers’ travel plans.
“Airlines have a very complex operation and during times of widespread disruption, there can be knock-on effects onto flights on other days.”
Customers have reported receiving emails late on Friday night and in the early hours of Saturday morning informing them their flight had been cancelled.
Many have taken to social media to complain that they have been unable to rebook via the website or get through on BA’s phone lines.
Abby Deem, 32, from Cambridge said her honeymoon plans had been “ruined” after her business class flight to Mauritius on 9th September was cancelled.
“We’ve been looking forward to this flight for a year,” she said.
“Neither of us have ever had the luxury to travel business class, and after the wedding it seemed the perfect way to start our honeymoon.”
She said she felt sick when her fiance Jonathan got a text to say the flight had been cancelled.
They have now booked economy flights with Emirates and they estimate it will cost them an extra £500.
Jennifer Bond, from Manchester, was due to fly to Las Vegas with her fiance Simon to get married but their flights to and from Las Vegas (11 and 25 September) have been cancelled.
She said: “Nearly two years of saving up and budgeting relentlessly and this happens three weeks before we fly.”
It was “impossible” to get through to BA on the phone, she added, so they have booked new flights with Virgin – costing £700 more than their original flights.
“We’re now out of pocket and the time to process a refund is four weeks,” she said. “It’s disgraceful.”
Another customer, Anna Redding, was scheduled to fly to Nairobi with her partner for their honeymoon on 11th September and return on 27th September – when the final strike is scheduled to take place.
They received an email saying their outward flight had been cancelled, and their return flight had been delayed.
She said they had also saved up to upgrade to first class flights as it was a “once in a lifetime” holiday.
They have been unable to get through to BA on the phone and she said the advice is unclear, adding: “Do we try to get another flight with someone else but lose the first class or do we wait just in case but risk not getting any other flights?”
Source: BBC