Baltimore/Washington International Thurgood Marshall in July 2026

57.7%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 July 2026, reporting carriers scheduled 8,485 domestic departures from Baltimore/Washington International Thurgood Marshall (BWI). 57.7% left less than 15 minutes late and 66.2% reached their destination on time; 4.3% were cancelled.

Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so BWI departures were 11.1 points below the national departure figure.

A year earlier, in July 2025, the airport had 8,922 departures with 59.8% leaving on time: a change of −2.1 points, with flights down 5%.

Flights arriving at BWI that month were on time 67.4% of the time (8,488 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 30% and national aviation system 19%.

On time 66.2%
Arrived 15+ minutes late 29.0%
Cancelled 4.3%
Diverted 0.5%

Every scheduled departure from BWI in July 2026, judged by arrival at the destination.

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

Measure	Jul 2026	Jul 2025	BWI, 12 months to Jul 2026	All reported flights, Jul 2026
Departed on time	57.7%	59.8%	71.7%	68.8%
Arrived on time	66.2%	63.7%	76.4%	69.4%
Cancelled	4.3%	3.6%	1.8%	2.6%
Average departure delay (late minutes only)	26.9 min	33.4 min	16.5 min	24.1 min
Scheduled departures a day	283	297	259	21,066
Scheduled departures	8,485	8,922	94,429	631,970

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,466	76%	65.4%	15.9 min	4.4%
DL Delta Air Lines	473	6%	75.1%	19.6 min	2.7%
F9 Frontier Airlines	456	5%	52.9%	32.9 min	7.0%
UA United Airlines	392	5%	72.2%	14.7 min	0.8%
AA American Airlines	326	4%	70.6%	14.7 min	3.7%
YX Republic Airline	172	2%	71.5%	6.1 min	10.5%
AS Alaska Airlines	92	1%	76.1%	10.6 min	1.1%
B6 JetBlue Airways	67	1%	68.7%	7.2 min	4.5%
MQ Envoy Air	33	0%	90.9%	-13.2 min	0.0%
OH PSA Airlines	7	0%	85.7%	0.4 min	0.0%
OO SkyWest Airlines	1	0%	100.0%	-22.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BWI–ATL	Baltimore to Atlanta	498	62.7%	21.4 min	4.0%
BWI–MCO	Baltimore to Orlando	388	58.8%	23.3 min	5.4%
BWI–BOS	Baltimore to Boston	326	66.3%	13.7 min	6.1%
BWI–FLL	Baltimore to Fort Lauderdale	273	64.1%	19.6 min	3.7%
BWI–CLT	Baltimore to Charlotte	272	65.8%	9.5 min	3.3%
BWI–DEN	Baltimore to Denver	264	73.5%	10.9 min	3.8%
BWI–ORD	Baltimore to Chicago	242	73.1%	16.0 min	4.1%
BWI–TPA	Baltimore to Tampa	212	72.6%	9.7 min	2.8%
BWI–DTW	Baltimore to Detroit	210	72.9%	17.1 min	3.8%
BWI–MIA	Baltimore to Miami	192	60.9%	29.6 min	5.7%
BWI–MDW	Baltimore to Chicago	181	60.2%	20.5 min	5.0%
BWI–DAL	Baltimore to Dallas	161	68.3%	12.9 min	1.2%

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), July 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2026	Minutes
Air carrier	30.1%	31.7%	52,876
Late-arriving aircraft	41.3%	41.8%	72,683
National Aviation System	18.8%	19.9%	33,083
Extreme weather	9.5%	6.5%	16,648
Security	0.3%	0.1%	614

175,904 delay minutes on 2,462 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 July 2026?

57.7% of 8,485 scheduled domestic departures left less than 15 minutes late, and 66.2% reached their destination on time. The national figures that month were 68.8% and 69.4%.

How does that compare with a year earlier?

In July 2025, 59.8% of 8,922 departures left on time and 3.6% were cancelled, against 57.7% and 4.3% in July 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2026; 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.