Delay stats for Boston, MA: Logan International per airline for period April 2005

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
ATA Airlines d/b/a ATA	134	94.03%	1.16%	0.00%	3.46%	0.00%	0.60%	0.75%	0.00%
Comair Inc.	1 013	86.77%	4.68%	1.99%	4.94%	0.14%	0.00%	1.48%	0.00%
JetBlue Airways	600	86.00%	3.40%	0.17%	4.10%	0.14%	6.03%	0.17%	0.00%
American Airlines Inc.	1 308	85.09%	4.38%	0.52%	4.66%	0.00%	4.67%	0.46%	0.23%
Delta Air Lines Inc.	1 642	83.56%	2.45%	0.27%	8.41%	0.00%	3.98%	1.28%	0.06%
Independence Air	211	82.46%	5.75%	1.42%	3.25%	0.00%	7.12%	0.00%	0.00%
AirTran Airways Corporation	590	81.53%	4.15%	0.05%	6.75%	0.00%	6.51%	1.02%	0.00%
US Airways Inc.	1 764	80.84%	4.72%	0.18%	5.95%	0.00%	5.99%	2.32%	0.00%
Continental Air Lines Inc.	539	79.78%	5.39%	0.73%	9.78%	0.52%	3.42%	0.37%	0.00%
American Eagle Airlines Inc.	1 756	78.93%	4.71%	0.59%	4.86%	0.02%	7.20%	3.64%	0.06%
America West Airlines Inc.	180	77.22%	5.93%	0.00%	14.42%	0.00%	2.42%	0.00%	0.00%
United Air Lines Inc.	778	74.81%	6.01%	0.36%	10.02%	0.00%	6.10%	2.57%	0.13%
Northwest Airlines Inc.	399	70.43%	9.18%	0.65%	16.12%	0.02%	2.61%	0.75%	0.25%
Alaska Airlines Inc.	31	61.29%	16.94%	0.00%	21.77%	0.00%	0.00%	0.00%	0.00%
Expressjet Airlines Inc.	41	60.98%	5.07%	4.66%	14.24%	0.00%	10.17%	4.88%	0.00%
Totals	10 986	81.46%	4.55%	0.55%	6.81%	0.05%	4.86%	1.66%	0.06%

DelayStats.aircraftdata.net