United Airlines in March 2026

77.6%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 2026, United Airlines (UA) reported 70,757 scheduled domestic flights. 77.6% arrived on time, 1.5% were cancelled and 0.4% diverted.

All reporting carriers together recorded 73.2% on time and 2.9% cancelled that month, so the carrier was 4.4 points above the combined figure.

A year earlier, in March 2025, it reported 66,994 flights with 82.2% on time: a change of −4.6 points.

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 36%, national aviation system 35% and air carrier 25%.

On time 77.6%
Arrived 15+ minutes late 20.5%
Cancelled 1.5%
Diverted 0.4%

Every scheduled domestic flight reported by United Airlines in March 2026.

March 2026 against a year earlier, the carrier's year and all carriers

Measure	Mar 2026	Mar 2025	UA, 12 months to Jul 2026	All carriers, Mar 2026
Arrived on time	77.6%	82.2%	78.2%	73.2%
Departed on time	79.2%	83.4%	80.6%	72.8%
Cancelled	1.5%	0.3%	1.0%	2.9%
Average arrival delay	7.7 min	1.8 min	6.3 min	10.6 min
Scheduled flights a day	2,359	2,233	2,262	20,403
Scheduled flights	70,757	66,994	825,693	612,102

123 airports and 842 routes had UA flights that month.

Busiest airports that month

Airport	Departures	On time	Avg arrival delay	Cancelled
DEN Denver	9,196	78.3%	7.6 min	0.8%
ORD Chicago	8,275	67.6%	18.0 min	2.7%
IAH Houston	6,498	77.3%	8.7 min	1.8%
EWR Newark	5,951	77.3%	3.4 min	1.1%
SFO San Francisco	4,919	84.7%	-1.4 min	0.6%
IAD Washington	3,306	81.4%	4.3 min	0.8%
LAX Los Angeles	2,458	80.1%	3.3 min	0.8%
MCO Orlando	1,497	77.8%	5.2 min	2.1%
LAS Las Vegas	1,359	82.2%	2.6 min	0.8%
BOS Boston	1,014	81.2%	4.1 min	1.4%
AUS Austin	999	79.0%	8.5 min	1.2%
PHX Phoenix	991	79.6%	10.3 min	0.7%
FLL Fort Lauderdale	978	76.5%	12.0 min	2.4%
TPA Tampa	915	80.3%	2.6 min	0.8%
SAN San Diego	885	80.1%	7.6 min	0.9%

By scheduled departure hour

100

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 2026.

Delay causes

BTS cause category	Share of delay minutes	All carriers, Mar 2026	Minutes
Air carrier	24.7%	33.5%	296,193
Late-arriving aircraft	36.3%	39.3%	436,463
National Aviation System	34.5%	21.0%	414,231
Extreme weather	4.5%	5.9%	54,167
Security	0.0%	0.2%	118

1,201,172 delay minutes on 14,486 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 2026?

77.6% of 70,757 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 73.2% that month.

How does that compare with a year earlier?

In March 2025 the carrier reported 66,994 flights with 82.2% on time and 0.3% cancelled, against 77.6% and 1.5% in March 2026.

Provenance

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