Southwest Airlines announced it obtained a $1 billion, 5-year revolving credit facility from a syndicate of lenders that included Citibank and JPMorgan Chase as co-administrative agents.

The credit facility will replace an $800 million, 5-year agreement that would have expired in April 2016.

According to an SEC filing, other banks involved in the new facility included affiliates of Morgan Stanley, Bank of America, Barclays, Deutsche Bank, Goldman Sachs and Wells Fargo.