Lubbock Preston Smith International in May 2026

79.3%departed 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 May 2026, reporting carriers scheduled 532 domestic departures from Lubbock Preston Smith International (LBB). 79.3% left less than 15 minutes late and 81.0% reached their destination on time; 1.3% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so LBB departures were 2.2 points above the national departure figure.

A year earlier, in May 2025, the airport had 574 departures with 77.2% leaving on time: a change of +2.1 points, with flights down 7%.

Flights arriving at LBB that month were on time 71.6% of the time (532 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 36%, late-arriving aircraft 30% and extreme weather 17%.

On time 81.0%
Arrived 15+ minutes late 17.1%
Cancelled 1.3%
Diverted 0.6%

Every scheduled departure from LBB in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	LBB, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	79.3%	77.2%	81.3%	77.1%
Arrived on time	81.0%	74.2%	81.1%	77.6%
Cancelled	1.3%	2.8%	1.7%	0.9%
Average departure delay (late minutes only)	18.7 min	17.6 min	16.6 min	16.0 min
Scheduled departures a day	18	19	18	20,391
Scheduled departures	532	574	6,557	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	238	45%	83.6%	4.1 min	0.0%
MQ Envoy Air	167	31%	86.2%	2.3 min	2.4%
OO SkyWest Airlines	86	16%	68.6%	21.6 min	2.3%
OH PSA Airlines	41	8%	70.7%	11.6 min	2.4%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LBB–DFW	Lubbock to Dallas/Fort Worth	207	80.7%	7.6 min	3.4%
LBB–DAL	Lubbock to Dallas	119	81.5%	6.3 min	0.0%
LBB–DEN	Lubbock to Denver	87	79.3%	3.5 min	0.0%
LBB–HOU	Lubbock to Houston	31	80.6%	4.5 min	0.0%
LBB–LAS	Lubbock to Las Vegas	31	71.0%	18.3 min	0.0%
LBB–PHX	Lubbock to Phoenix	31	83.9%	18.8 min	0.0%
LBB–AUS	Lubbock to Austin	26	96.2%	-9.4 min	0.0%

By scheduled departure hour

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	36.4%	33.0%	3,162
Late-arriving aircraft	30.1%	40.4%	2,614
National Aviation System	16.2%	20.5%	1,412
Extreme weather	17.3%	6.0%	1,504
Security	0.0%	0.1%	0

8,692 delay minutes on 91 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

How many flights left LBB on time in May 2026?

79.3% of 532 scheduled domestic departures left less than 15 minutes late, and 81.0% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 77.2% of 574 departures left on time and 2.8% were cancelled, against 79.3% and 1.3% in May 2026.

Provenance

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