Standard & Poor’s (S&P) Global Ratings upgraded Chicago Midway Airport (MDW) revenue bonds from an "A-" to an "A" and has rated its outlook as "stable," Mayor Lori Lightfoot announced in a news release Monday. “The stable outlook reflects our view of MDW's generally recovered activity levels, that we expect will be sustained or continue to improve, coupled with the airport maintaining financial metrics consistent with an adequate financial risk profile as it issues additional debt to fund its capital improvement plan (CIP)," according to the S&P report.