United Airlines in March 2024

80.6%arrived on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In March 2024, United Airlines (UA) reported 64,929 scheduled domestic flights. 80.6% arrived on time, 0.5% were cancelled and 0.2% diverted.

All reporting carriers together recorded 78.3% on time and 0.9% cancelled that month, so the carrier was 2.3 points above the combined figure.

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 29% and national aviation system 28%.

On time 80.6%
Arrived 15+ minutes late 18.7%
Cancelled 0.5%
Diverted 0.2%

Every scheduled domestic flight reported by United Airlines in March 2024.

March 2024 against a year earlier, the carrier's year and all carriers

Measure	Mar 2024	Year earlier	UA, 12 months to Jul 2026	All carriers, Mar 2024
Arrived on time	80.6%	—	78.2%	78.3%
Departed on time	81.1%	—	80.6%	78.5%
Cancelled	0.5%	—	1.0%	0.9%
Average arrival delay	3.0 min	—	6.3 min	6.5 min
Scheduled flights a day	2,164	—	2,262	19,726
Scheduled flights	64,929	—	825,693	591,767

112 airports and 793 routes had UA flights that month.

Busiest airports that month

Airport	Departures	On time	Avg arrival delay	Cancelled
DEN Denver	8,551	78.4%	4.7 min	0.8%
ORD Chicago	7,609	81.4%	1.2 min	0.2%
EWR Newark	6,021	80.2%	-0.7 min	0.5%
IAH Houston	5,829	76.0%	10.1 min	0.4%
SFO San Francisco	4,124	76.2%	7.5 min	0.4%
IAD Washington	2,750	84.0%	-0.9 min	0.3%
LAX Los Angeles	2,131	79.4%	4.3 min	0.6%
MCO Orlando	1,339	75.4%	9.5 min	0.9%
LAS Las Vegas	1,295	78.7%	7.3 min	0.8%
PHX Phoenix	968	84.4%	0.3 min	0.3%
BOS Boston	957	86.4%	-8.8 min	0.7%
FLL Fort Lauderdale	883	72.9%	18.1 min	0.8%
TPA Tampa	855	75.8%	9.8 min	0.7%
AUS Austin	849	84.5%	1.6 min	0.4%
SAN San Diego	828	85.5%	-1.6 min	0.1%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of UA flights that arrived on time, by scheduled departure hour (local time at each origin), March 2024.

Delay causes

BTS cause category	Share of delay minutes	All carriers, Mar 2024	Minutes
Air carrier	28.9%	32.1%	230,840
Late-arriving aircraft	40.1%	42.1%	320,079
National Aviation System	28.1%	21.4%	224,012
Extreme weather	2.8%	4.2%	22,522
Security	0.0%	0.2%	119

797,572 delay minutes on 12,113 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

What share of United Airlines flights were on time in March 2024?

80.6% of 64,929 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 78.3% that month.

How does that compare with a year earlier?

March 2023 is outside the 36 months on file, or the carrier did not report that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2024; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for United Airlines · methodology · corrections.