Baltimore/Washington International Thurgood Marshall in January 2026

76.1%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 January 2026, reporting carriers scheduled 6,934 domestic departures from Baltimore/Washington International Thurgood Marshall (BWI). 76.1% left less than 15 minutes late and 78.2% reached their destination on time; 5.6% were cancelled.

Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so BWI departures were 0.5 points above the national departure figure.

A year earlier, in January 2025, the airport had 7,094 departures with 76.8% leaving on time: a change of −0.7 points, with flights down 2%.

Flights arriving at BWI that month were on time 80.6% of the time (6,932 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 39%, late-arriving aircraft 35% and national aviation system 20%.

On time 78.2%
Arrived 15+ minutes late 16.1%
Cancelled 5.6%
Diverted 0.1%

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

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

Measure	Jan 2026	Jan 2025	BWI, 12 months to Jul 2026	All reported flights, Jan 2026
Departed on time	76.1%	76.8%	71.7%	75.6%
Arrived on time	78.2%	77.0%	76.4%	75.3%
Cancelled	5.6%	4.4%	1.8%	4.7%
Average departure delay (late minutes only)	11.3 min	12.2 min	16.5 min	16.7 min
Scheduled departures a day	231	237	259	18,133
Scheduled departures	6,934	7,094	94,429	544,003

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	5,346	77%	79.5%	-1.6 min	5.0%
DL Delta Air Lines	374	5%	79.9%	0.0 min	6.4%
UA United Airlines	297	4%	80.1%	-3.9 min	5.4%
AA American Airlines	281	4%	74.7%	6.7 min	9.6%
F9 Frontier Airlines	247	4%	63.6%	19.7 min	8.1%
NK Spirit Airlines	204	3%	67.6%	7.1 min	9.8%
YX Republic Airline	91	1%	78.0%	-5.3 min	7.7%
MQ Envoy Air	56	1%	67.9%	3.7 min	7.1%
AS Alaska Airlines	37	1%	62.2%	8.0 min	5.4%
OH PSA Airlines	1	0%	100.0%	-5.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BWI–MCO	Baltimore to Orlando	411	75.9%	2.2 min	4.6%
BWI–ATL	Baltimore to Atlanta	379	77.8%	1.6 min	6.3%
BWI–FLL	Baltimore to Fort Lauderdale	295	71.9%	5.3 min	6.4%
BWI–BOS	Baltimore to Boston	239	79.1%	-4.5 min	5.4%
BWI–MIA	Baltimore to Miami	213	71.4%	7.8 min	6.1%
BWI–TPA	Baltimore to Tampa	207	81.2%	-1.6 min	3.4%
BWI–CLT	Baltimore to Charlotte	201	78.6%	-2.2 min	9.0%
BWI–DEN	Baltimore to Denver	200	74.5%	1.3 min	4.5%
BWI–DTW	Baltimore to Detroit	159	80.5%	1.9 min	3.8%
BWI–ORD	Baltimore to Chicago	151	69.5%	7.3 min	5.3%
BWI–DAL	Baltimore to Dallas	136	77.9%	-1.8 min	8.8%
BWI–BDL	Baltimore to Hartford	132	80.3%	-1.3 min	5.3%

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), January 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2026	Minutes
Air carrier	39.1%	37.3%	22,975
Late-arriving aircraft	35.4%	35.0%	20,802
National Aviation System	19.6%	18.0%	11,507
Extreme weather	5.1%	9.6%	2,995
Security	0.9%	0.1%	521

58,800 delay minutes on 1,115 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 January 2026?

76.1% of 6,934 scheduled domestic departures left less than 15 minutes late, and 78.2% reached their destination on time. The national figures that month were 75.6% and 75.3%.

How does that compare with a year earlier?

In January 2025, 76.8% of 7,094 departures left on time and 4.4% were cancelled, against 76.1% and 5.6% in January 2026.

Provenance

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