Denver International in April 2024

77.3%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 April 2024, reporting carriers scheduled 24,657 domestic departures from Denver International (DEN). 77.3% left less than 15 minutes late and 77.4% reached their destination on time; 0.4% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.2% arrived on time, so DEN departures were 3.2 points below the national departure figure.

Flights arriving at DEN that month were on time 81.1% of the time (24,663 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 33% and national aviation system 21%.

On time 77.4%
Arrived 15+ minutes late 21.9%
Cancelled 0.4%
Diverted 0.2%

Every scheduled departure from DEN in April 2024, judged by arrival at the destination.

April 2024 against a year earlier, the airport's year and the nation

Measure	Apr 2024	Year earlier	DEN, 12 months to Jul 2026	All reported flights, Apr 2024
Departed on time	77.3%	—	75.7%	80.5%
Arrived on time	77.4%	—	76.1%	80.2%
Cancelled	0.4%	—	0.7%	0.7%
Average departure delay (late minutes only)	14.3 min	—	16.5 min	14.2 min
Scheduled departures a day	822	—	875	19,406
Scheduled departures	24,657	—	319,208	582,185

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	8,334	34%	74.6%	7.1 min	0.3%
UA United Airlines	7,882	32%	78.8%	5.6 min	0.2%
OO SkyWest Airlines	4,325	18%	83.4%	1.9 min	0.7%
F9 Frontier Airlines	2,094	8%	68.1%	18.4 min	1.0%
DL Delta Air Lines	1,058	4%	85.1%	-0.8 min	0.0%
AA American Airlines	730	3%	75.6%	11.5 min	0.8%
AS Alaska Airlines	140	1%	76.4%	3.5 min	1.4%
B6 JetBlue Airways	60	0%	76.7%	-4.8 min	0.0%
G4 Allegiant Air	34	0%	76.5%	5.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DEN–PHX	Denver to Phoenix	825	73.6%	11.1 min	0.1%
DEN–LAS	Denver to Las Vegas	774	73.0%	11.4 min	0.4%
DEN–SLC	Denver to Salt Lake City	707	77.8%	4.3 min	0.1%
DEN–LAX	Denver to Los Angeles	654	79.8%	4.8 min	0.5%
DEN–MSP	Denver to Minneapolis	556	80.9%	3.2 min	0.0%
DEN–ORD	Denver to Chicago	556	75.9%	10.6 min	0.9%
DEN–ATL	Denver to Atlanta	530	79.2%	4.7 min	0.0%
DEN–DFW	Denver to Dallas/Fort Worth	509	72.7%	15.6 min	1.2%
DEN–SEA	Denver to Seattle	504	75.8%	6.0 min	0.2%
DEN–SAN	Denver to San Diego	461	76.8%	5.8 min	0.2%
DEN–SFO	Denver to San Francisco	455	55.4%	28.5 min	0.2%
DEN–IAH	Denver to Houston	442	72.2%	10.0 min	0.0%

By scheduled departure hour

100

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), April 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2024	Minutes
Air carrier	33.3%	33.6%	106,709
Late-arriving aircraft	41.7%	41.0%	133,585
National Aviation System	21.3%	20.0%	68,224
Extreme weather	3.4%	5.1%	10,832
Security	0.2%	0.2%	631

319,981 delay minutes on 5,411 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 DEN on time in April 2024?

77.3% of 24,657 scheduled domestic departures left less than 15 minutes late, and 77.4% reached their destination on time. The national figures that month were 80.5% and 80.2%.

How does that compare with a year earlier?

April 2023 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

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