Historical On-time Performance of U.S. Flights

This is calculated from historical data from July 2014 through June 2015.

• Failure Rate: The percentage of flights that are cancelled or diverted. (Overall in U.S.: 1.8%)
• Delay Rate: The percentage of flights that arrive more than 1 hour after their scheduled arrival time, or fail to arrive at all. (Overall in U.S.: 7.5%)

Rates at ONT:

• Failure rate: 1.3%
• Delay rate: 6.5%

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Performance for carriers operating flights at this airport: [csv]

Carrier	Num. Outgoing Flights	Outgoing Failure Rate	Outgoing Delay Rate	Num. Incoming Flights	Incoming Failure Rate	Incoming Delay Rate
AA - American Airlines	1,562	2.7%	8.7%	1,561	2.2%	10.3%
AS - Alaska Airlines, Inc.	738	0.4%	2.5%	738	0.5%	3.2%
DL - Delta Air Lines	278	0.4%	2.5%	277	0.4%	3.4%
OO - SkyWest Airlines	5,322	2.9%	9.3%	5,323	2.6%	8.8%
US - US Airways	1,413	0.8%	3.1%	1,413	0.4%	4.2%
WN - Southwest Airlines	10,733	0.5%	5.1%	10,733	0.5%	6.0%

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Performance for the 14 routes in and out of this airport: [csv]

Airport	Num. from ONT	Failure Rate from ONT	Delay Rate from ONT	Num. to ONT	Failure Rate to ONT	Delay Rate to ONT
ATL	8	1.7%	6.6%	8	1.7%	6.6%
DEN	1,312	1.8%	6.8%	1,293	1.4%	8.2%
DFW	1,562	2.7%	8.7%	1,561	2.2%	10.3%
IAH	626	3.2%	7.7%	627	2.5%	9.4%
LAS	1,647	0.3%	5.2%	1,638	0.5%	7.2%
MDW	356	1.7%	5.4%	356	0.8%	5.4%
OAK	2,326	0.4%	5.5%	2,351	0.6%	5.5%
PDX	904	1.6%	4.3%	904	1.2%	5.1%
PHX	3,475	0.5%	4.0%	3,480	0.3%	5.6%
SEA	971	0.9%	3.5%	970	1.0%	3.9%
SFO	2,142	4.3%	14.8%	2,142	4.2%	12.3%
SJC	1,440	1.1%	5.3%	1,419	0.7%	6.3%
SLC	1,040	0.4%	2.5%	1,040	0.3%	2.9%
SMF	2,237	0.6%	5.2%	2,256	0.7%	5.2%