Baltimore/Washington International Thurgood Marshall in October 2024

79.5%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 October 2024, reporting carriers scheduled 8,402 domestic departures from Baltimore/Washington International Thurgood Marshall (BWI). 79.5% left less than 15 minutes late and 85.3% reached their destination on time; 1.4% were cancelled.

Nationally that month, 85.5% of flights departed on time and 85.8% arrived on time, so BWI departures were 6.0 points below the national departure figure.

A year earlier, in October 2023, the airport had 8,784 departures with 74.7% leaving on time: a change of +4.8 points, with flights down 4%.

Flights arriving at BWI that month were on time 85.5% of the time (8,404 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 49%, late-arriving aircraft 38% and national aviation system 13%.

On time 85.3%
Arrived 15+ minutes late 13.1%
Cancelled 1.4%
Diverted 0.1%

Every scheduled departure from BWI in October 2024, judged by arrival at the destination.

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

Measure	Oct 2024	Oct 2023	BWI, 12 months to Jul 2026	All reported flights, Oct 2024
Departed on time	79.5%	74.7%	71.7%	85.5%
Arrived on time	85.3%	78.9%	76.4%	85.8%
Cancelled	1.4%	0.3%	1.8%	1.0%
Average departure delay (late minutes only)	9.7 min	13.2 min	16.5 min	9.4 min
Scheduled departures a day	280	293	259	20,517
Scheduled departures	8,402	8,784	94,429	615,497

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,248	74%	84.4%	-1.6 min	1.5%
NK Spirit Airlines	498	6%	87.3%	-6.6 min	1.8%
DL Delta Air Lines	474	6%	96.6%	-11.0 min	0.0%
AA American Airlines	370	4%	84.1%	3.8 min	0.5%
UA United Airlines	361	4%	89.2%	-5.5 min	0.6%
F9 Frontier Airlines	233	3%	74.2%	2.9 min	5.2%
YX Republic Airline	79	1%	92.4%	-7.8 min	0.0%
9E Endeavor Air	52	1%	96.2%	-7.3 min	0.0%
AS Alaska Airlines	52	1%	86.5%	10.6 min	0.0%
MQ Envoy Air	20	0%	60.0%	1.6 min	0.0%
G4 Allegiant Air	12	0%	83.3%	-7.6 min	0.0%
OO SkyWest Airlines	3	0%	100.0%	-13.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BWI–ATL	Baltimore to Atlanta	514	90.5%	-4.4 min	0.2%
BWI–MCO	Baltimore to Orlando	413	81.4%	-4.4 min	8.7%
BWI–BOS	Baltimore to Boston	389	83.8%	0.3 min	0.0%
BWI–CLT	Baltimore to Charlotte	309	77.7%	7.5 min	0.3%
BWI–FLL	Baltimore to Fort Lauderdale	297	83.8%	-0.4 min	0.7%
BWI–DEN	Baltimore to Denver	277	89.9%	-9.4 min	0.4%
BWI–TPA	Baltimore to Tampa	253	78.3%	0.6 min	10.3%
BWI–ORD	Baltimore to Chicago	248	86.3%	-4.2 min	0.0%
BWI–LAS	Baltimore to Las Vegas	210	92.4%	-13.3 min	0.0%
BWI–DTW	Baltimore to Detroit	196	89.3%	-4.2 min	0.5%
BWI–MDW	Baltimore to Chicago	184	82.6%	0.4 min	0.0%
BWI–BNA	Baltimore to Nashville	181	88.4%	-2.7 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), October 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2024	Minutes
Air carrier	49.1%	42.7%	24,035
Late-arriving aircraft	37.6%	37.4%	18,399
National Aviation System	12.9%	16.3%	6,314
Extreme weather	0.2%	3.4%	117
Security	0.2%	0.2%	122

48,987 delay minutes on 1,104 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 BWI on time in October 2024?

79.5% of 8,402 scheduled domestic departures left less than 15 minutes late, and 85.3% reached their destination on time. The national figures that month were 85.5% and 85.8%.

How does that compare with a year earlier?

In October 2023, 74.7% of 8,784 departures left on time and 0.3% were cancelled, against 79.5% and 1.4% in October 2024.

Provenance

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