British Airways will add 10,300 short-haul flights to its schedule between August & October.
The latest announcement signifies that nearly 30,000 flights have been removed by BA between April and October of this year.
These cancellations will affect London Heathrow and Gatwick airports.
As the demand for air travel has increased after Covid restrictions, the industry has been struggling with staff shortages.
BA stated that "The entire aviation industry continues to face significant challenges" and was focused on building resilience in order to give customers the security they need.
These latest cancellations are made ahead of Friday's deadline. The Department for Transport (DfT) announced the amnesty last month to allow airlines a brief window to return any slots they do not believe they can operate in the summer season.
By making the schedules more flexible, we aim to decrease disruptions and cancellations late-notice over the summer.
Airport slots allow airlines to fly at a specific time and land at a particular place on a given day. If they cancel flights, carriers could lose their slots. This is a risk that would be common in most cases.
Ryanair stated in a statement it was against amnesty and blamed other airlines for the circumstances they were in.
The statement stated that "We don't support the latest slot waiver regulation by the UK government," which was meant to benefit airlines that failed to properly prepare for the return flight travel after Covid.
It stated that slot waivers would lead to fewer flights, reduced connectivity and ultimately harm competition. This will also lead to higher fares for UK consumers who are already struggling to find affordable travel.
Ryanair stated that Ryanair was continuing to operate its full summer flight schedule without any disruptions caused by staff shortages.
BA claimed that the amnesty's flexibility meant that it could "further reduce its schedule and consolidate certain of our quieter service so that we can preserve as many holiday flights as possible".
The airline stated that while most of its flights will be unaffected and customers will travel as usual, they don't underestimate the potential impact of the storm and are doing all they can to help them.
Passengers have the option of rebooking or getting a refund by giving advance notice. The goal is to minimize disruptions in the coming months.
However, the disruption of plans for hundreds of thousands of passengers will not be complete.
British Airways hopes that this summer's cancellations will be the final as it works to improve its schedule.
It explains that most services will continue to run as planned.
However, international travel is not returning to its former glory. Staff shortages continue to be a problem as passengers demand rises.
Today's announcement by Easyjet is yet another sign that airlines, including Easyjet, have had to reduce their hopes for a bumper summer.
Wednesday's announcement does not affect long-haul flights.
BA stated that it was informing customers to offer a full refund or rebooking on BA or with another airline.
However, the cancellation news triggered a flood of calls to the company.
We are experiencing high call volumes because of current disruption. The airline tweeted that they would contact passengers if their flight was cancelled.
BA is not the only airline that was forced to cancel flights during the summer rush.
EasyJet was forced to cancel approximately 10,000 flights between July & September in an effort to minimize disruptions caused by staff shortages.
The entire aviation industry has been struggling to recover from the pandemic that saw thousands of jobs lost and the industry grind to a halt.
Airlines are now attempting to fly almost as many flights as before Covid. However, it is difficult to rehire employees.
This week, airlines were expected to cancel a lot of flights ahead of Friday's amnesty for airport slots.
After May's travel chaos, ministers advised carriers to reassess their plans. This was due to a lack of staff at airports and airlines.
BA stated that the move would provide customers with "certainty".
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