Delay stats for Boston, MA: Logan International per airline for period September 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
JetBlue Airways	491	87.78%	0.87%	0.30%	7.26%	0.01%	3.78%	0.00%	0.00%
America West Airlines Inc.	179	82.12%	5.92%	0.00%	9.10%	0.00%	1.74%	1.12%	0.00%
Alaska Airlines Inc.	60	80.00%	8.95%	0.00%	9.38%	1.67%	0.00%	0.00%	0.00%
ATA Airlines d/b/a ATA	104	77.88%	2.68%	0.00%	16.31%	0.00%	3.13%	0.00%	0.00%
US Airways Inc.	1 668	77.82%	2.89%	0.42%	14.00%	0.00%	3.74%	1.14%	0.00%
Expressjet Airlines Inc.	9	77.78%	2.33%	0.00%	11.11%	0.00%	8.78%	0.00%	0.00%
Delta Air Lines Inc.	1 444	77.29%	2.58%	0.10%	13.34%	0.00%	5.10%	1.52%	0.07%
AirTran Airways Corporation	622	74.76%	2.31%	0.00%	17.75%	0.00%	4.70%	0.32%	0.16%
United Air Lines Inc.	765	74.51%	4.56%	0.42%	12.86%	0.00%	6.48%	1.05%	0.13%
Comair Inc.	1 172	74.06%	4.87%	4.17%	13.80%	0.09%	0.46%	2.56%	0.00%
Independence Air	155	72.90%	2.89%	0.00%	15.83%	0.00%	8.38%	0.00%	0.00%
American Airlines Inc.	1 134	71.43%	5.06%	1.12%	16.99%	0.00%	4.34%	0.97%	0.09%
American Eagle Airlines Inc.	1 463	71.16%	3.85%	0.51%	14.71%	0.00%	6.77%	3.01%	0.00%
Continental Air Lines Inc.	573	65.27%	4.10%	1.03%	21.66%	0.26%	6.10%	1.57%	0.00%
Northwest Airlines Inc.	356	49.72%	16.68%	3.37%	24.09%	0.00%	4.17%	1.97%	0.00%
Totals	10 195	74.02%	4.08%	0.98%	14.85%	0.03%	4.48%	1.51%	0.04%

DelayStats.aircraftdata.net