Sept 17 (Reuters) - Spirit Airlines is set to cut jobs

as the airline plans to reduce capacity by 25% year-on-year in

November, according to a memo seen by Reuters on Wednesday,

deepening woes for the low-budget carrier.

The cut by the airlines aims to "optimize our network to

focus on our strongest markets", CEO Dave Davis told employees

in the memo.

"These evaluations will inevitably affect the size of our

teams as we become a more efficient airline," the memo said. The

number of roles that could be impacted remains unclear.

The low-cost carrier continues to evaluate the size of its

fleet and plans to meet with the airlines' union leaders in the

coming weeks, according to the memo.

CNBC earlier reported the restructuring plan.

Spirit filed for bankruptcy protection last month for the

second time in a year after a previous reorganization failed to

put it on a firmer financial footing.

Spirit's financial struggles, as well as a rush among U.S.

carriers to chase premium travelers, have raised concerns that

the era of cheap flights might be over for price-conscious

travelers.

Earlier on Tuesday, United Airlines ruled out

bidding for assets of Spirit if they become available, which is

expected as part of the discount carrier's restructuring

process.