← November 2025 · January 2026 → · All months

72% of flights arrived on time in December 2025, and 1.6% were cancelled. Southwest Airlines was the most punctual airline (75%); JetBlue was the least (62%). The most delayed busy route was ORD → CAK (36% on time).

Airlines

#	Airline	Flights	On time	Year earlier	Cancelled
1	Southwest Airlines	118,075	75%	80%	0.5%
2	United Airlines	123,175	74%	79%	1.1%
3	Alaska Airlines	36,255	71%	77%	2.2%
4	Hawaiian Airlines	6,705	71%	84%	0.7%
5	American Airlines	165,917	71%	76%	1.5%
6	Delta Air Lines	134,260	71%	80%	2.7%
7	Allegiant Air	11,516	68%	72%	0.8%
8	Frontier Airlines	16,724	67%	75%	2.8%
9	Spirit Airlines	11,800	64%	77%	3.7%
10	JetBlue	20,560	62%	68%	2.8%

Most delayed routes

Route	Flights	On time
ORD → CAK	165	36%
JFK → SEA	232	36%
DTW → SEA	164	37%
BOS → SEA	161	37%
LGA → MCI	145	39%
ORD → LNK	120	41%
ORD → FWA	198	41%
EWR → SEA	178	44%
DTW → GRR	175	45%
ORD → FSD	217	45%
FSD → ORD	217	45%
ORD → TVC	281	46%
LGA → ILM	148	46%
ORD → FAR	197	46%
FLL → AUS	121	46%
ORD → SEA	384	47%
IAD → SEA	124	48%
TVC → ORD	281	48%
ORD → ATW	270	48%
ORD → GRB	291	48%

Most reliable routes

Route	Flights	On time
SGU → SLC	120	96%
SFO → OGG	154	95%
MAF → HOU	128	94%
MAF → DAL	134	93%
GEG → SLC	147	93%
SJC → SLC	137	92%
ABQ → IAH	124	92%
LAS → IAH	309	92%
LAS → CLT	185	91%
IAH → LAS	307	90%
PHX → PHL	204	90%
HOU → LAS	183	90%
SAN → IAD	122	90%
SJU → CLT	121	90%
SLC → OAK	121	90%
DAL → STL	154	90%
SLC → DTW	125	90%
BRO → DFW	124	90%
ELP → IAH	168	89%
MCO → LAS	172	89%

Airports

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

#	Airport	Departures	On time	Cancelled
1	SAT San Antonio	3,619	83%	0.7%
2	SLC Salt Lake City	9,786	83%	0.9%
3	HOU Houston Hobby	4,634	81%	0.4%
4	IAH Houston Bush Intercontinental	14,527	80%	0.5%
5	SJC San Jose	3,765	80%	0.9%
6	LAS Las Vegas Harry Reid	14,807	79%	0.6%
7	SNA Orange County John Wayne	3,887	78%	1.2%
8	PDX Portland	6,195	78%	0.7%
9	DAL Dallas Love Field	6,070	78%	0.4%
10	SMF Sacramento	4,761	78%	0.8%
11	PHX Phoenix Sky Harbor	17,814	78%	0.5%
12	AUS Austin-Bergstrom	7,644	77%	0.6%
13	MSY New Orleans	4,185	77%	1.3%
14	SJU San Juan	3,393	77%	1.8%
15	LAX Los Angeles LAX	16,613	77%	1.0%
16	HNL Honolulu	5,054	75%	0.7%
17	SFO San Francisco	12,356	75%	1.3%
18	CLT Charlotte Douglas	19,549	75%	0.8%
19	TPA Tampa	6,861	74%	1.4%
20	MIA Miami	10,111	74%	1.1%
21	BNA Nashville	9,014	74%	1.0%
22	DEN Denver	26,026	74%	0.6%
23	MCI Kansas City	4,233	74%	1.4%
24	SEA Seattle-Tacoma	14,569	73%	1.2%
25	SAN San Diego	8,838	73%	1.7%
26	STL St. Louis Lambert	5,743	73%	1.0%
27	RSW Southwest Florida	3,494	73%	1.9%
28	RDU Raleigh-Durham	5,354	72%	1.8%
29	ATL Atlanta Hartsfield-Jackson	29,069	71%	2.3%
30	DFW Dallas/Fort Worth	25,797	71%	0.6%
31	PIT Pittsburgh	3,767	71%	1.6%
32	IAD Washington Dulles	7,551	71%	1.2%
33	MCO Orlando	14,289	71%	1.4%
34	PBI President Donald J. Trump	3,186	70%	1.9%
35	BWI Baltimore/Washington	7,864	69%	1.3%
36	CMH John Glenn Columbus	3,809	69%	1.8%
37	MDW Chicago Midway	5,819	69%	0.5%
38	IND Indianapolis	4,252	68%	1.7%
39	CLE Cleveland Hopkins	3,635	68%	3.3%
40	BOS Boston Logan	11,362	67%	1.7%
41	EWR Newark	11,679	67%	2.8%
42	CVG Cincinnati Northern Kentucky	3,476	66%	2.1%
43	PHL Philadelphia	9,607	65%	2.2%
44	DCA Washington Reagan National	11,660	65%	2.3%
45	FLL Fort Lauderdale	8,895	63%	2.1%
46	JFK New York JFK	10,394	62%	4.2%
47	MSP Minneapolis-St. Paul	10,375	61%	2.6%
48	DTW Detroit Metro	11,656	59%	2.7%
49	ORD Chicago O'Hare	29,878	59%	2.6%
50	LGA LaGuardia	13,466	59%	4.9%

Routes need 120+ flights in the month to be ranked (1,856 were). Figures as published by BTS; frozen 2026-08. Method.

December 2025 report

Airlines

Most delayed routes

Most reliable routes

Airports