On-Time Report

Airlines › United Airlines › April 2026

Carrier month · April 2026

United Airlines in April 2026

81.9%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 April 2026, United Airlines (UA) reported 69,451 scheduled domestic flights. 81.9% arrived on time, 0.5% were cancelled and 0.2% diverted.

All reporting carriers together recorded 78.9% on time and 0.9% cancelled that month, so the carrier was 3.0 points above the combined figure.

A year earlier, in April 2025, it reported 64,256 flights with 81.2% on time: a change of +0.7 points.

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 39%, late-arriving aircraft 33% and air carrier 24%.

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

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

MeasureApr 2026Apr 2025UA, 12 months to Jul 2026All carriers, Apr 2026
Arrived on time81.9%81.2%78.2%78.9%
Departed on time84.5%83.2%80.6%79.1%
Cancelled0.5%0.4%1.0%0.9%
Average arrival delay1.8 min4.1 min6.3 min4.8 min
Scheduled flights a day2,3152,1422,26219,931
Scheduled flights69,45164,256825,693597,919

124 airports and 864 routes had UA flights that month.

Busiest airports that month

AirportDeparturesOn timeAvg arrival delayCancelled
ORD Chicago8,58171.3%12.4 min1.5%
DEN Denver8,31986.8%-2.6 min0.1%
IAH Houston6,21882.8%0.8 min0.2%
EWR Newark5,77884.5%-3.1 min0.2%
SFO San Francisco5,25781.3%-1.6 min0.2%
IAD Washington3,33688.0%-3.7 min0.1%
LAX Los Angeles2,58485.3%-4.6 min0.2%
MCO Orlando1,35586.9%-3.1 min0.1%
LAS Las Vegas1,29182.3%-2.5 min0.3%
BOS Boston1,06386.3%-1.9 min0.2%
AUS Austin94279.5%7.7 min0.6%
SAN San Diego90781.9%-0.8 min0.3%
PHX Phoenix87480.0%2.6 min0.1%
FLL Fort Lauderdale84385.4%-2.1 min0.1%
DFW Dallas/Fort Worth82978.9%7.5 min0.4%

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), April 2026.

Delay causes

BTS cause categoryShare of delay minutesAll carriers, Apr 2026Minutes
Air carrier23.9%33.5%191,484
Late-arriving aircraft33.2%40.4%266,264
National Aviation System38.7%21.0%310,338
Extreme weather4.1%5.0%32,597
Security0.0%0.1%317
801,000 delay minutes on 12,015 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.
← March 2026May 2026 →

Questions and answers

What share of United Airlines flights were on time in April 2026?

81.9% of 69,451 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 78.9% that month.

How does that compare with a year earlier?

In April 2025 the carrier reported 64,256 flights with 81.2% on time and 0.4% cancelled, against 81.9% and 0.5% in April 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.