Name: U.S. flight delays, August 2026: worst routes & airlines
Creator: U.S. DOT Bureau of Transportation Statistics
License: https://www.usa.gov/government-works

← July 2026 · All months

72% of flights arrived on time in August 2026, and 2.0% were cancelled. Delta Air Lines was the most punctual airline (77%); JetBlue was the least (60%). The most delayed busy route was SAN → SFO (39% on time).

Airlines

#	Airline	Flights	On time	Year earlier	Cancelled
1	Delta Air Lines	145,388	77%	83%	2.0%
2	Allegiant Air	10,005	73%	76%	0.4%
3	Alaska Airlines	46,784	72%	76%	1.5%
4	United Airlines	134,271	72%	76%	1.6%
5	American Airlines	176,212	71%	73%	2.7%
6	Southwest Airlines	116,362	69%	78%	0.8%
7	Frontier Airlines	20,314	64%	69%	3.0%
8	JetBlue	23,729	60%	74%	6.2%

Most delayed routes

Route	Flights	On time
SAN → SFO	716	39%
RNO → SFO	173	39%
LAS → SAN	548	41%
SFO → SAN	713	42%
LAS → SFO	542	43%
BUR → SFO	276	44%
PHX → SFO	377	45%
RDM → SFO	121	45%
PSP → SFO	203	47%
BOI → SFO	144	47%
OAK → SAN	395	47%
SJC → SAN	514	47%
DCA → CLE	131	48%
SEA → SFO	645	48%
DFW → SAN	365	49%
JFK → BUF	243	50%
MCO → BDL	142	50%
JFK → CHS	151	50%
ORD → ASE	121	50%
JFK → RDU	316	51%

Most reliable routes

Route	Flights	On time
IDA → SLC	124	96%
LAX → BOI	134	96%
BRO → IAH	124	94%
PNS → IAH	121	94%
SAT → IAH	227	93%
IAH → BRO	124	93%
OKC → IAH	229	93%
LAX → GEG	121	93%
DFW → CRP	227	93%
MAF → IAH	194	92%
IAH → OKC	229	92%
LFT → IAH	152	92%
SNA → PDX	126	92%
MEM → IAH	137	92%
MLU → DFW	124	92%
SLC → IDA	124	92%
BRO → DFW	122	92%
FAR → MSP	186	91%
BOI → PDX	150	91%
CRP → DFW	227	91%

Airports

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

#	Airport	Departures	On time	Cancelled
1	IAH Houston Bush Intercontinental	14,192	82%	0.6%
2	SAT San Antonio	3,337	82%	0.7%
3	MSP Minneapolis-St. Paul	11,868	79%	0.7%
4	HNL Honolulu	4,867	78%	2.5%
5	IND Indianapolis	4,319	78%	2.7%
6	PDX Portland	7,350	78%	0.6%
7	SLC Salt Lake City	10,107	78%	0.4%
8	MCI Kansas City	4,561	77%	1.5%
9	SMF Sacramento	4,964	77%	0.5%
10	SNA Orange County John Wayne	3,961	76%	0.9%
11	DTW Detroit Metro	12,278	76%	1.5%
12	AUS Austin-Bergstrom	7,724	76%	0.9%
13	LAX Los Angeles LAX	16,688	76%	0.8%
14	CMH John Glenn Columbus	3,994	75%	2.7%
15	CVG Cincinnati Northern Kentucky	3,819	75%	2.9%
16	SJC San Jose	3,890	75%	0.5%
17	PHX Phoenix Sky Harbor	14,794	74%	0.6%
18	RDU Raleigh-Durham	5,419	74%	3.2%
19	IAD Washington Dulles	7,984	74%	1.6%
20	MSY New Orleans	3,460	74%	1.0%
21	HOU Houston Hobby	4,326	74%	0.3%
22	CLE Cleveland Hopkins	3,982	74%	3.5%
23	ATL Atlanta Hartsfield-Jackson	30,163	73%	1.2%
24	DFW Dallas/Fort Worth	27,383	73%	0.5%
25	SJU San Juan	3,005	72%	2.2%
26	DAL Dallas Love Field	5,727	72%	0.3%
27	MIA Miami	8,677	72%	1.6%
28	STL St. Louis Lambert	5,785	72%	1.5%
29	SEA Seattle-Tacoma	17,599	71%	0.7%
30	PIT Pittsburgh	3,978	71%	3.5%
31	TPA Tampa	5,723	71%	1.6%
32	BNA Nashville	9,968	69%	1.4%
33	LAS Las Vegas Harry Reid	14,020	68%	1.1%
34	EWR Newark	10,869	67%	5.3%
35	BOS Boston Logan	13,188	67%	3.6%
36	BWI Baltimore/Washington	7,975	67%	3.0%
37	MCO Orlando	12,090	67%	2.2%
38	FLL Fort Lauderdale	7,013	66%	2.7%
39	DEN Denver	28,557	66%	1.3%
40	CLT Charlotte Douglas	19,453	66%	1.6%
41	MDW Chicago Midway	6,922	66%	0.5%
42	SFO San Francisco	13,716	64%	0.8%
43	PHL Philadelphia	12,565	64%	5.4%
44	SAN San Diego	10,112	63%	1.2%
45	LGA LaGuardia	14,047	63%	7.3%
46	ORD Chicago O'Hare	35,541	63%	2.4%
47	DCA Washington Reagan National	12,583	63%	7.2%
48	JFK New York JFK	10,995	60%	7.6%

Routes need 120+ flights in the month to be ranked (1,898 were). Figures as published by BTS; frozen 2026-08. Method.

August 2026 report

Airlines

Most delayed routes

Most reliable routes

Airports