← December 2023 · February 2024 → · All months

73% of flights arrived on time in January 2024, and 3.8% were cancelled. Delta Air Lines was the most punctual airline (78%); Alaska Airlines was the least (65%). The most delayed busy route was SEA → HNL (36% on time).

Airlines

#	Airline	Flights	On time	Year earlier	Cancelled
1	Delta Air Lines	116,199	78%	—	1.8%
2	Allegiant Air	8,596	76%	—	2.3%
3	Southwest Airlines	115,389	74%	—	3.1%
4	Spirit Airlines	20,415	73%	—	1.5%
5	United Airlines	104,791	72%	—	6.9%
6	Hawaiian Airlines	6,576	72%	—	1.5%
7	Frontier Airlines	14,379	71%	—	2.2%
8	American Airlines	147,443	70%	—	3.0%
9	JetBlue	19,580	69%	—	1.7%
10	Alaska Airlines	29,057	65%	—	11.9%

Most delayed routes

Route	Flights	On time
SEA → HNL	233	36%
CID → ORD	176	45%
MLI → ORD	152	45%
PIA → ORD	152	45%
FWA → ORD	169	49%
ORD → PIA	152	49%
LIT → ORD	131	49%
ORD → LIT	130	49%
ORD → MLI	152	49%
FNT → ORD	120	50%
ORD → CID	175	50%
SEA → OGG	137	50%
SBN → ORD	147	51%
ORD → ATW	207	51%
ORD → SBN	148	51%
FLL → AUS	126	52%
SJC → HNL	120	52%
ORD → TVC	174	52%
GRR → ORD	264	52%
ORD → AUS	226	52%

Most reliable routes

Route	Flights	On time
SMF → ONT	141	96%
PNS → ATL	175	95%
MSP → LAX	156	94%
CMH → EWR	155	93%
SAN → LAX	178	93%
ABQ → LAX	176	93%
LAX → ABQ	175	93%
SAN → ATL	143	92%
ONT → OAK	135	91%
KOA → LAX	132	91%
SMF → LAX	402	91%
SJC → SNA	239	90%
EWR → CMH	155	90%
SAV → ATL	196	90%
RNO → LAX	206	90%
CHS → EWR	121	90%
PSP → DEN	146	90%
JAX → ATL	366	90%
MCO → MSP	201	90%
RNO → PHX	172	90%

Airports

Airports with at least 3,000 departures in the month, most punctual first.

#	Airport	Departures	On time	Cancelled
1	SMF Sacramento	4,222	83%	1.4%
2	SJC San Jose	3,880	83%	1.9%
3	OAK Oakland	3,571	81%	1.7%
4	SNA Orange County John Wayne	3,695	81%	1.1%
5	SAT San Antonio	3,374	79%	3.0%
6	MSP Minneapolis-St. Paul	9,550	78%	1.9%
7	ATL Atlanta Hartsfield-Jackson	26,363	78%	1.0%
8	LAX Los Angeles LAX	15,341	78%	3.1%
9	HNL Honolulu	5,169	78%	2.8%
10	PIT Pittsburgh	3,381	78%	2.4%
11	PHX Phoenix Sky Harbor	15,573	77%	2.1%
12	SAN San Diego	7,147	77%	5.0%
13	TPA Tampa	6,822	77%	3.1%
14	CMH John Glenn Columbus	3,281	77%	2.9%
15	CVG Cincinnati Northern Kentucky	3,293	77%	2.4%
16	LAS Las Vegas Harry Reid	15,053	76%	2.5%
17	SLC Salt Lake City	9,470	76%	1.1%
18	RDU Raleigh-Durham	4,568	76%	2.6%
19	IND Indianapolis	3,580	76%	2.5%
20	EWR Newark	11,471	75%	6.6%
21	LGA LaGuardia	12,819	74%	4.6%
22	JFK New York JFK	9,471	74%	2.9%
23	HOU Houston Hobby	4,605	74%	2.1%
24	RSW Southwest Florida	3,839	74%	3.9%
25	SFO San Francisco	10,301	74%	5.6%
26	DAL Dallas Love Field	6,037	74%	3.5%
27	CLT Charlotte Douglas	19,126	73%	1.8%
28	MSY New Orleans	4,121	73%	2.8%
29	DCA Washington Reagan National	11,717	73%	5.7%
30	BOS Boston Logan	10,242	72%	3.2%
31	AUS Austin-Bergstrom	6,790	72%	3.4%
32	IAD Washington Dulles	5,613	72%	5.6%
33	PHL Philadelphia	8,428	72%	2.8%
34	MCO Orlando	14,296	71%	2.9%
35	CLE Cleveland Hopkins	3,339	71%	5.5%
36	STL St. Louis Lambert	5,155	71%	4.7%
37	DEN Denver	24,500	71%	4.3%
38	BNA Nashville	7,589	70%	6.9%
39	IAH Houston Bush Intercontinental	12,878	70%	6.2%
40	SJU San Juan	3,027	70%	0.9%
41	PDX Portland	4,990	70%	8.5%
42	SEA Seattle-Tacoma	13,140	70%	7.8%
43	BWI Baltimore/Washington	7,551	68%	3.6%
44	MCI Kansas City	3,903	68%	4.8%
45	DFW Dallas/Fort Worth	23,743	67%	2.8%
46	FLL Fort Lauderdale	8,460	67%	3.1%
47	MDW Chicago Midway	5,886	67%	8.3%
48	DTW Detroit Metro	9,612	67%	3.5%
49	MIA Miami	10,214	66%	2.5%
50	ORD Chicago O'Hare	22,999	61%	7.2%

Routes need 120+ flights in the month to be ranked (1,600 were). Figures as published by BTS; frozen 2026-08. Method.

January 2024 report

Airlines

Most delayed routes

Most reliable routes

Airports