U.S. Airlines

18 airlines with flight performance data.

#	Airline	Flights	On-Time	Avg Delay	Top Delay Cause
1	Southwest AirlinesWN	7,582,834	80.4%	57.9 min	Late Aircraft
2	Delta Air LinesDL	5,242,763	84.6%	76.0 min	Carrier
3	American AirlinesAA	5,078,840	78.6%	85.4 min	Late Aircraft
4	SkyWest AirlinesOO	4,343,656	83.6%	86.8 min	Carrier
5	United AirlinesUA	3,669,461	81.3%	75.7 min	Late Aircraft
6	Republic AirwaysYX	1,812,114	84.9%	73.3 min	Late Aircraft
7	Envoy AirMQ	1,521,802	82.5%	67.4 min	Late Aircraft
8	JetBlue AirwaysB6	1,366,470	73.8%	81.0 min	Carrier
9	PSA AirlinesOH	1,300,525	81.3%	84.0 min	Late Aircraft
10	Alaska AirlinesAS	1,292,316	80.8%	56.5 min	Late Aircraft
11	Spirit AirlinesNK	1,278,352	77.6%	73.7 min	NAS
12	Endeavor Air9E	1,111,655	88%	81.4 min	Carrier
13	Frontier AirlinesF9	968,030	73.7%	80.3 min	Late Aircraft
14	Allegiant AirG4	694,895	75.3%	81.5 min	Late Aircraft
15	Hawaiian AirlinesHA	414,402	83.1%	57.0 min	Carrier
16	Mesa AirlinesYV	410,786	83.1%	89.3 min	Carrier
17	Horizon AirQX	200,419	85.7%	59.0 min	Late Aircraft
18	ExpressJet AirlinesEV	52,135	89.8%	66.7 min	NAS