79% of flights arrived on time in April 2026, and 0.9% were cancelled. Alaska Airlines was the most punctual airline (84%); Spirit Airlines was the least (63%). The most delayed busy route was SBA → SFO (44% on time).

Airlines

#	Airline	Flights	On time	Year earlier	Cancelled
1	Alaska Airlines	40,726	84%	82%	0.5%
2	Delta Air Lines	139,548	83%	82%	0.8%
3	United Airlines	129,053	79%	81%	1.3%
4	American Airlines	173,556	78%	76%	1.1%
5	Southwest Airlines	117,814	77%	80%	0.3%
6	Allegiant Air	10,318	76%	79%	0.1%
7	JetBlue	20,650	76%	82%	0.1%
8	Frontier Airlines	18,540	73%	73%	1.3%
9	Spirit Airlines	10,469	63%	83%	3.4%

Most delayed routes

Route	Flights	On time
SBA → SFO	140	44%
BUR → SFO	271	45%
SNA → SFO	377	46%
ORD → LNK	150	47%
ORD → FWA	271	47%
PSP → SFO	271	47%
ORD → CAK	208	48%
ORD → SBN	236	48%
SEA → SFO	495	48%
LAX → SFO	996	48%
DFW → SFO	337	49%
SLC → SFO	294	49%
SAN → SFO	581	49%
RNO → SFO	175	50%
LAS → SFO	504	52%
ONT → SFO	124	53%
PHX → SFO	432	54%
RDM → SFO	120	54%
FWA → ORD	271	56%
ORD → MKE	516	56%

Most reliable routes

Route	Flights	On time
ANC → PDX	127	98%
SYR → JFK	120	98%
GEG → PDX	146	97%
PVD → PHL	138	96%
SAN → ATL	176	96%
MHT → BWI	147	96%
BOI → PDX	146	96%
PHL → ALB	120	96%
SNA → PDX	120	96%
SAN → LAX	207	96%
CHA → CLT	234	95%
GEG → SLC	146	95%
PDX → BOI	146	95%
ANC → FAI	207	95%
CMH → IAD	120	95%
IAD → CMH	120	95%
IAD → PIT	120	95%
CLT → LYH	170	95%
CMH → EWR	150	95%
MSP → SLC	146	95%

Airports

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

#	Airport	Departures	On time	Cancelled
1	PDX Portland	6,133	87%	0.4%
2	IAD Washington Dulles	7,787	86%	0.3%
3	SEA Seattle-Tacoma	14,408	86%	0.2%
4	PIT Pittsburgh	3,825	85%	0.4%
5	SJC San Jose	3,530	84%	0.5%
6	SLC Salt Lake City	9,956	84%	0.4%
7	EWR Newark	11,522	83%	0.7%
8	CMH John Glenn Columbus	3,953	83%	0.5%
9	SMF Sacramento	4,768	83%	0.4%
10	CLE Cleveland Hopkins	3,886	83%	1.0%
11	CVG Cincinnati Northern Kentucky	3,730	83%	0.9%
12	PHL Philadelphia	10,955	82%	0.5%
13	HNL Honolulu	4,809	82%	0.6%
14	MSP Minneapolis-St. Paul	10,730	82%	0.7%
15	IND Indianapolis	4,615	82%	1.1%
16	DEN Denver	25,345	82%	0.3%
17	TPA Tampa	6,952	82%	0.5%
18	SAT San Antonio	3,417	82%	0.7%
19	SNA Orange County John Wayne	3,746	82%	0.8%
20	IAH Houston Bush Intercontinental	14,268	81%	0.5%
21	JFK New York JFK	10,254	81%	0.3%
22	MCI Kansas City	4,459	81%	0.9%
23	LAX Los Angeles LAX	15,861	81%	0.4%
24	RDU Raleigh-Durham	5,440	81%	0.7%
25	CLT Charlotte Douglas	20,045	81%	0.2%
26	ATL Atlanta Hartsfield-Jackson	29,808	81%	0.9%
27	PHX Phoenix Sky Harbor	17,797	80%	0.3%
28	RSW Southwest Florida	3,638	80%	0.7%
29	DTW Detroit Metro	12,087	80%	1.1%
30	BWI Baltimore/Washington	8,041	80%	0.3%
31	SAN San Diego	9,063	79%	0.4%
32	MSY New Orleans	4,432	79%	0.7%
33	STL St. Louis Lambert	5,556	79%	1.0%
34	BOS Boston Logan	12,649	79%	0.3%
35	LAS Las Vegas Harry Reid	14,794	78%	0.4%
36	SJU San Juan	3,190	78%	0.8%
37	BNA Nashville	9,842	77%	0.6%
38	AUS Austin-Bergstrom	7,748	77%	0.6%
39	MCO Orlando	14,613	77%	0.4%
40	MDW Chicago Midway	6,372	77%	1.2%
41	DCA Washington Reagan National	12,284	76%	0.8%
42	HOU Houston Hobby	4,418	76%	0.1%
43	MIA Miami	9,556	75%	0.3%
44	LGA LaGuardia	14,101	74%	1.0%
45	SFO San Francisco	12,582	73%	0.7%
46	DFW Dallas/Fort Worth	25,695	73%	1.3%
47	PBI President Donald J. Trump	3,067	71%	0.6%
48	DAL Dallas Love Field	5,965	70%	0.7%
49	FLL Fort Lauderdale	8,610	68%	1.1%
50	ORD Chicago O'Hare	35,561	67%	3.6%

Routes need 120+ flights in the month to be ranked (1,828 were). Figures as published by BTS; frozen 2026-08. Method.

April 2026 report

Airlines

Most delayed routes

Most reliable routes

Airports