| Code | Year/Month | Avg. Delay |
|---|---|---|
| MDW | 2003/6 | 47.4 min |
| MDW | 2003/7 | 58.4 min |
| MDW | 2003/8 | 52.9 min |
| MDW | 2003/9 | 49.8 min |
| MDW | 2003/10 | 50 min |
| MDW | 2003/11 | 50.2 min |
| MDW | 2003/12 | 49.1 min |
| MDW | 2004/1 | 57.8 min |
| MDW | 2004/2 | 45 min |
| MDW | 2004/3 | 43.8 min |
| MDW | 2004/4 | 44.8 min |
| MDW | 2004/5 | 49.3 min |
| MDW | 2004/6 | 41.2 min |
| MDW | 2004/7 | 53 min |
| MDW | 2004/8 | 46.3 min |
| MDW | 2004/9 | 40.9 min |
| MDW | 2004/10 | 40.1 min |
| MDW | 2004/11 | 43.1 min |
| MDW | 2004/12 | 46.6 min |
| MDW | 2005/1 | 48.7 min |
| MDW | 2005/2 | 47.5 min |
| MDW | 2005/3 | 48.6 min |
| MDW | 2005/4 | 43.2 min |
| MDW | 2005/5 | 46.9 min |
| MDW | 2005/6 | 48 min |
| MDW | 2005/7 | 49.5 min |
| MDW | 2005/8 | 47.2 min |
| MDW | 2005/9 | 43 min |
| MDW | 2005/10 | 40.8 min |
| MDW | 2005/11 | 43.3 min |
| MDW | 2005/12 | 42.9 min |
| MDW | 2006/1 | 45.4 min |
| MDW | 2006/2 | 44.7 min |
| MDW | 2006/3 | 45.6 min |
| MDW | 2006/4 | 41.3 min |
| MDW | 2006/5 | 46.4 min |
| MDW | 2006/6 | 49.9 min |
| MDW | 2006/7 | 48.6 min |
| MDW | 2006/8 | 46.2 min |
| MDW | 2006/9 | 47.3 min |
| MDW | 2006/10 | 47.4 min |
| MDW | 2006/11 | 44.7 min |
| MDW | 2006/12 | 47 min |
| MDW | 2007/1 | 43.6 min |
| MDW | 2007/2 | 46.2 min |
| MDW | 2007/3 | 46.9 min |
| MDW | 2007/4 | 49.1 min |
| MDW | 2007/5 | 43.2 min |
| MDW | 2007/6 | 48.8 min |
| MDW | 2007/7 | 46.4 min |
| MDW | 2007/8 | 47.2 min |
| MDW | 2007/9 | 41.2 min |
| MDW | 2007/10 | 43.4 min |
| MDW | 2007/11 | 38.8 min |
| MDW | 2007/12 | 47 min |
| MDW | 2008/1 | 48.6 min |
| MDW | 2008/2 | 50.7 min |
| MDW | 2008/3 | 45.1 min |
| MDW | 2008/4 | 44.7 min |
| MDW | 2008/5 | 47.6 min |
| MDW | 2008/6 | 49.2 min |
| MDW | 2008/7 | 50.2 min |
| MDW | 2008/8 | 44.1 min |
| MDW | 2008/9 | 41.5 min |
| MDW | 2008/10 | 41.6 min |
| MDW | 2008/11 | 44.3 min |
| MDW | 2008/12 | 59.2 min |
| MDW | 2009/1 | 45.6 min |
| MDW | 2009/2 | 42 min |
| MDW | 2009/3 | 46.7 min |
| MDW | 2009/4 | 44.6 min |
| MDW | 2009/5 | 43.9 min |
| MDW | 2009/6 | 51.4 min |
| MDW | 2009/7 | 43.3 min |
| MDW | 2009/8 | 49.7 min |
| MDW | 2009/9 | 41.8 min |
| MDW | 2009/10 | 43.3 min |
| MDW | 2009/11 | 43.3 min |
| MDW | 2009/12 | 45.1 min |
| MDW | 2010/1 | 44 min |
| MDW | 2010/2 | 46.2 min |
| MDW | 2010/3 | 46 min |
| MDW | 2010/4 | 38.3 min |
| MDW | 2010/5 | 49.6 min |
| MDW | 2010/6 | 50.9 min |
| MDW | 2010/7 | 47.7 min |
| MDW | 2010/8 | 45.8 min |
| MDW | 2010/9 | 39.5 min |
| MDW | 2010/10 | 38.5 min |
| MDW | 2010/11 | 44.4 min |
| MDW | 2010/12 | 43.3 min |
| MDW | 2011/1 | 42.1 min |
| MDW | 2011/2 | 42.9 min |
| MDW | 2011/3 | 47.7 min |
| MDW | 2011/4 | 55.4 min |
| MDW | 2011/5 | 48.9 min |
| MDW | 2011/6 | 52.1 min |
| MDW | 2011/7 | 49.4 min |
| MDW | 2011/8 | 49.8 min |
| MDW | 2011/9 | 49.2 min |
| MDW | 2011/10 | 46.1 min |
| MDW | 2011/11 | 47.8 min |
| MDW | 2011/12 | 45.1 min |
| MDW | 2012/1 | 49.8 min |
| MDW | 2012/2 | 45.4 min |
| MDW | 2012/3 | 44.5 min |
| MDW | 2012/4 | 51.3 min |
| MDW | 2012/5 | 45.8 min |
| MDW | 2012/6 | 51.1 min |
| MDW | 2012/7 | 49.7 min |
| MDW | 2012/8 | 48.3 min |
| MDW | 2012/9 | 48 min |
| MDW | 2012/10 | 47 min |
| MDW | 2012/11 | 43.6 min |
| MDW | 2012/12 | 44 min |
| MDW | 2013/1 | 43.3 min |
| MDW | 2013/2 | 41.5 min |
| MDW | 2013/3 | 41.8 min |
| MDW | 2013/4 | 46.6 min |
| MDW | 2013/5 | 43.5 min |
| MDW | 2013/6 | 55.2 min |
| MDW | 2013/7 | 46.1 min |
| MDW | 2013/8 | 42.7 min |
| MDW | 2013/9 | 43 min |
| MDW | 2013/10 | 35.9 min |
| MDW | 2013/11 | 36.9 min |
| MDW | 2013/12 | 43.9 min |
| MDW | 2014/1 | 58.2 min |
| MDW | 2014/2 | 46.7 min |
| MDW | 2014/3 | 41.2 min |
| MDW | 2014/4 | 44.6 min |
| MDW | 2014/5 | 46.9 min |
| MDW | 2014/6 | 54.1 min |
| MDW | 2014/7 | 57.9 min |
| MDW | 2014/8 | 52.2 min |
| MDW | 2014/9 | 54.1 min |
| MDW | 2014/10 | 53.3 min |
| MDW | 2014/11 | 51.2 min |
| MDW | 2014/12 | 51.4 min |
| MDW | 2015/1 | 55.5 min |
| MDW | 2015/2 | 50.5 min |
| MDW | 2015/3 | 51.3 min |
| MDW | 2015/4 | 59.7 min |
| MDW | 2015/5 | 55.1 min |
| MDW | 2015/6 | 59.3 min |
| MDW | 2015/7 | 59.5 min |
| MDW | 2015/8 | 55.6 min |
| MDW | 2015/9 | 52.8 min |
| MDW | 2015/10 | 54.9 min |
| MDW | 2015/11 | 56.2 min |
| MDW | 2015/12 | 54.7 min |
| MDW | 2016/1 | 45.2 min |