Delta Air Lines in December 2023

90.2%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 December 2023, Delta Air Lines (DL) reported 81,022 scheduled domestic flights. 90.2% arrived on time, 0.0% were cancelled and 0.1% diverted.

All reporting carriers together recorded 83.8% on time and 0.4% cancelled that month, so the carrier was 6.4 points above the combined figure.

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 54%, late-arriving aircraft 24% and national aviation system 16%.

On time 90.2%
Arrived 15+ minutes late 9.7%
Cancelled 0.0%
Diverted 0.1%

Every scheduled domestic flight reported by Delta Air Lines in December 2023.

December 2023 against a year earlier, the carrier's year and all carriers

Measure	Dec 2023	Year earlier	DL, 12 months to Jul 2026	All carriers, Dec 2023
Arrived on time	90.2%	—	79.9%	83.8%
Departed on time	89.2%	—	80.6%	83.1%
Cancelled	0.0%	—	1.7%	0.4%
Average arrival delay	-6.4 min	—	3.9 min	0.5 min
Scheduled flights a day	2,701	—	2,846	19,013
Scheduled flights	81,022	—	1,038,644	570,394

144 airports and 894 routes had DL flights that month.

Busiest airports that month

Airport	Departures	On time	Avg arrival delay	Cancelled
ATL Atlanta	17,815	89.9%	-4.6 min	0.0%
MSP Minneapolis	5,424	91.2%	-11.9 min	0.0%
DTW Detroit	4,848	92.1%	-11.1 min	0.0%
SLC Salt Lake City	4,404	89.7%	-5.2 min	0.0%
LAX Los Angeles	3,051	88.5%	-3.5 min	0.0%
SEA Seattle	2,621	89.2%	-5.7 min	0.0%
JFK New York	2,620	88.0%	-14.1 min	0.0%
LGA New York	2,194	85.0%	-6.7 min	0.0%
BOS Boston	2,038	88.9%	-8.6 min	0.0%
MCO Orlando	1,926	87.5%	-4.4 min	0.0%
LAS Las Vegas	1,312	91.8%	-4.0 min	0.0%
FLL Fort Lauderdale	1,114	86.9%	-3.6 min	0.0%
TPA Tampa	1,101	89.1%	-5.3 min	0.1%
DEN Denver	1,035	92.3%	-6.4 min	0.0%
SFO San Francisco	1,034	88.6%	-3.2 min	0.0%

By scheduled departure hour

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

Share of DL flights that arrived on time, by scheduled departure hour (local time at each origin), December 2023.

Delay causes

BTS cause category	Share of delay minutes	All carriers, Dec 2023	Minutes
Air carrier	54.3%	37.1%	286,588
Late-arriving aircraft	24.2%	38.8%	127,731
National Aviation System	15.7%	17.6%	82,923
Extreme weather	5.5%	6.2%	29,001
Security	0.2%	0.3%	1,121

527,364 delay minutes on 7,827 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

What share of Delta Air Lines flights were on time in December 2023?

90.2% of 81,022 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 83.8% that month.

How does that compare with a year earlier?

December 2022 is outside the 36 months on file, or the carrier did not report that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2023; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for Delta Air Lines · methodology · corrections.