Denver International in May 2024

70.3%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 2024, reporting carriers scheduled 26,368 domestic departures from Denver International (DEN). 70.3% left less than 15 minutes late and 71.5% reached their destination on time; 0.8% were cancelled.

Nationally that month, 73.4% of flights departed on time and 72.3% arrived on time, so DEN departures were 3.1 points below the national departure figure.

Flights arriving at DEN that month were on time 73.4% of the time (26,364 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 30% and national aviation system 16%.

On time 71.5%
Arrived 15+ minutes late 27.4%
Cancelled 0.8%
Diverted 0.3%

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

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

Measure	May 2024	Year earlier	DEN, 12 months to Jul 2026	All reported flights, May 2024
Departed on time	70.3%	—	75.7%	73.4%
Arrived on time	71.5%	—	76.1%	72.3%
Cancelled	0.8%	—	0.7%	1.4%
Average departure delay (late minutes only)	20.8 min	—	16.5 min	20.8 min
Scheduled departures a day	879	—	875	20,325
Scheduled departures	26,368	—	319,208	609,743

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	8,658	33%	72.5%	12.7 min	0.7%
WN Southwest Airlines	8,521	32%	66.8%	16.2 min	0.7%
OO SkyWest Airlines	4,672	18%	79.8%	7.7 min	0.4%
F9 Frontier Airlines	2,353	9%	65.2%	17.7 min	1.8%
DL Delta Air Lines	1,104	4%	81.3%	4.1 min	0.0%
AA American Airlines	763	3%	66.6%	27.1 min	4.1%
AS Alaska Airlines	185	1%	73.5%	8.8 min	0.0%
B6 JetBlue Airways	71	0%	66.2%	21.8 min	0.0%
G4 Allegiant Air	41	0%	80.5%	-2.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DEN–PHX	Denver to Phoenix	813	69.7%	15.2 min	1.0%
DEN–LAS	Denver to Las Vegas	784	69.5%	13.6 min	0.9%
DEN–SLC	Denver to Salt Lake City	726	72.7%	14.7 min	0.6%
DEN–LAX	Denver to Los Angeles	668	73.7%	11.3 min	1.0%
DEN–SEA	Denver to Seattle	599	72.5%	10.3 min	0.2%
DEN–MSP	Denver to Minneapolis	596	76.2%	6.7 min	0.5%
DEN–ORD	Denver to Chicago	583	64.8%	23.8 min	1.0%
DEN–ATL	Denver to Atlanta	555	72.6%	9.8 min	0.2%
DEN–DFW	Denver to Dallas/Fort Worth	550	59.5%	31.9 min	5.6%
DEN–SAN	Denver to San Diego	497	73.4%	10.0 min	1.2%
DEN–SFO	Denver to San Francisco	476	52.9%	26.4 min	0.6%
DEN–IAH	Denver to Houston	472	58.9%	24.7 min	2.1%

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 2024.

Delay causes

BTS cause category	Share of delay minutes	National, May 2024	Minutes
Air carrier	29.8%	29.8%	146,242
Late-arriving aircraft	46.8%	43.0%	229,232
National Aviation System	15.9%	20.1%	77,977
Extreme weather	7.3%	7.0%	35,714
Security	0.2%	0.1%	917

490,082 delay minutes on 7,226 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 May 2024?

70.3% of 26,368 scheduled domestic departures left less than 15 minutes late, and 71.5% reached their destination on time. The national figures that month were 73.4% and 72.3%.

How does that compare with a year earlier?

May 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 May 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.