Delay stats for Baltimore, MD: Baltimore/Washington International Thurgood Marsh per airline for period May 2007

Airline	Total flights	On time	Delay by air carrier	Delay by weather	Delay by national aviation system	Delay by security	Delay by aircraft arriving late	Cancelled	Diverted
Delta Air Lines Inc.	325	87.07%	4.21%	0.42%	6.64%	0.00%	1.04%	0.31%	0.31%
Southwest Airlines Co.	5 330	84.00%	3.06%	0.65%	3.56%	0.13%	8.43%	0.06%	0.11%
Pinnacle Airlines Inc.	31	83.87%	4.03%	0.00%	9.29%	0.00%	2.81%	0.00%	0.00%
AirTran Airways Corporation	1 230	82.03%	3.34%	0.15%	7.07%	0.00%	6.92%	0.24%	0.24%
Expressjet Airlines Inc.	211	76.77%	2.98%	0.59%	7.72%	0.00%	10.05%	1.90%	0.00%
Comair Inc.	304	74.34%	8.49%	6.12%	7.66%	0.00%	2.72%	0.66%	0.00%
Mesa Airlines Inc.	38	73.68%	13.16%	0.00%	10.53%	0.00%	0.00%	2.63%	0.00%
Continental Air Lines Inc.	172	73.26%	8.53%	1.02%	12.63%	0.00%	3.98%	0.58%	0.00%
United Air Lines Inc.	459	70.81%	4.68%	0.51%	12.97%	0.00%	10.16%	0.87%	0.00%
American Eagle Airlines Inc.	155	69.03%	5.31%	0.00%	14.19%	0.00%	9.54%	1.94%	0.00%
Northwest Airlines Inc.	297	66.33%	11.85%	0.56%	16.37%	0.00%	4.23%	0.67%	0.00%
American Airlines Inc.	341	63.64%	9.13%	2.77%	14.14%	0.07%	8.20%	2.05%	0.00%
US Airways Inc.	383	50.13%	14.99%	0.22%	23.64%	0.00%	7.88%	3.13%	0.00%
Atlantic Southeast Airlines	24	45.83%	22.88%	4.17%	18.79%	0.00%	8.33%	0.00%	0.00%
Totals	9 300	79.42%	4.62%	0.80%	6.88%	0.08%	7.63%	0.46%	0.11%

DelayStats.aircraftdata.net