St Louis Lambert International in February 2026

80.3%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 February 2026, reporting carriers scheduled 4,484 domestic departures from St Louis Lambert International (STL). 80.3% left less than 15 minutes late and 83.4% reached their destination on time; 1.3% were cancelled.

Nationally that month, 78.1% of flights departed on time and 78.3% arrived on time, so STL departures were 2.2 points above the national departure figure.

A year earlier, in February 2025, the airport had 4,419 departures with 82.3% leaving on time: a change of −2.0 points, with flights up 1%.

Flights arriving at STL that month were on time 82.3% of the time (4,486 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 36% and national aviation system 16%.

On time 83.4%
Arrived 15+ minutes late 14.9%
Cancelled 1.3%
Diverted 0.4%

Every scheduled departure from STL in February 2026, judged by arrival at the destination.

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

Measure	Feb 2026	Feb 2025	STL, 12 months to Jul 2026	All reported flights, Feb 2026
Departed on time	80.3%	82.3%	74.1%	78.1%
Arrived on time	83.4%	81.5%	76.8%	78.3%
Cancelled	1.3%	1.0%	1.3%	2.3%
Average departure delay (late minutes only)	12.6 min	11.7 min	17.6 min	15.0 min
Scheduled departures a day	150	147	174	17,168
Scheduled departures	4,484	4,419	63,318	515,037

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,828	63%	83.9%	-1.9 min	0.7%
AA American Airlines	414	9%	86.7%	-2.3 min	1.4%
DL Delta Air Lines	336	7%	86.0%	4.4 min	0.9%
YX Republic Airline	258	6%	78.7%	-2.0 min	7.8%
OO SkyWest Airlines	160	4%	72.5%	18.6 min	1.3%
MQ Envoy Air	153	3%	84.3%	-2.9 min	1.3%
UA United Airlines	121	3%	86.8%	3.7 min	0.0%
F9 Frontier Airlines	97	2%	82.5%	3.1 min	0.0%
OH PSA Airlines	80	2%	67.5%	6.8 min	8.8%
AS Alaska Airlines	37	1%	91.9%	-8.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
STL–ATL	St. Louis to Atlanta	254	88.2%	-3.5 min	0.8%
STL–DEN	St. Louis to Denver	250	84.8%	3.8 min	0.0%
STL–LGA	St. Louis to New York	202	73.8%	-0.8 min	7.9%
STL–MCO	St. Louis to Orlando	195	83.1%	-0.8 min	0.5%
STL–PHX	St. Louis to Phoenix	193	81.9%	5.6 min	0.0%
STL–ORD	St. Louis to Chicago	185	83.2%	-0.2 min	0.5%
STL–DCA	St. Louis to Washington	179	70.4%	8.8 min	2.8%
STL–DFW	St. Louis to Dallas/Fort Worth	161	83.9%	0.0 min	0.6%
STL–DAL	St. Louis to Dallas	149	85.2%	-3.2 min	1.3%
STL–MSP	St. Louis to Minneapolis	149	83.9%	-1.8 min	1.3%
STL–LAS	St. Louis to Las Vegas	144	80.6%	0.3 min	0.7%
STL–CLT	St. Louis to Charlotte	136	85.3%	-7.1 min	2.9%

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), February 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Feb 2026	Minutes
Air carrier	46.2%	38.2%	19,690
Late-arriving aircraft	36.4%	37.2%	15,525
National Aviation System	16.1%	18.5%	6,851
Extreme weather	1.0%	6.0%	435
Security	0.4%	0.2%	152

42,653 delay minutes on 667 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 STL on time in February 2026?

80.3% of 4,484 scheduled domestic departures left less than 15 minutes late, and 83.4% reached their destination on time. The national figures that month were 78.1% and 78.3%.

How does that compare with a year earlier?

In February 2025, 82.3% of 4,419 departures left on time and 1.0% were cancelled, against 80.3% and 1.3% in February 2026.

Provenance

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