BWI · Baltimore/Washington International Thurgood Marshall Airport

Share of flights 15+ min late, by month

departures arrivals usual for the month (departures) Jan 2015 → Jul 2026; gridlines 10/20/30/40%

Month	Flights	Late 15+	vs usual	Cancelled	Avg min	Main cause
Jul 2026	8,485	39.7%	+1.2	4.3%	27	Late aircraft
Jun 2026	8,045	34.6%	-2.6	1.2%	21	Late aircraft
May 2026	8,161	28.5%	-0.7	0.3%	17	Late aircraft
Apr 2026	8,041	24.3%	-2.5	0.3%	14	Late aircraft
Mar 2026	7,803	34.5%	+7.7	2.6%	23	Late aircraft
Feb 2026	6,552	23.0%	+2.9	3.6%	14	Late aircraft
Jan 2026	6,934	19.4%	-3.3	5.6%	11	Airline
Dec 2025	7,863	32.0%	+1.9	1.3%	18	Late aircraft
Nov 2025	7,721	20.3%	-0.7	1.8%	13	Late aircraft
Oct 2025	8,475	23.7%	-1.5	0.1%	13	Late aircraft
Sep 2025	7,968	17.7%	-8.0	0.2%	10	Late aircraft
Aug 2025	8,381	25.0%	-10.9	0.8%	16	Late aircraft
Jul 2025	8,922	38.0%	-0.6	3.6%	33	Late aircraft
Jun 2025	8,660	35.0%	-2.2	1.4%	26	Late aircraft
May 2025	8,411	29.2%	+3.1	0.5%	19	Late aircraft
Apr 2025	8,107	21.2%	-5.6	0.3%	13	Late aircraft
Mar 2025	7,927	22.8%	-4.1	1.2%	17	Late aircraft
Feb 2025	6,571	20.1%	-0.3	0.7%	13	Late aircraft
Jan 2025	7,094	19.7%	-3.0	4.4%	12	Airline
Dec 2024	7,908	26.9%	-3.2	0.3%	15	Late aircraft
Nov 2024	7,796	16.4%	-4.6	0.1%	9	Late aircraft
Oct 2024	8,402	19.4%	-5.8	1.4%	10	Airline
Sep 2024	8,273	19.7%	-6.0	0.6%	11	Airline
Aug 2024	8,940	35.9%	+1.1	2.6%	24	Late aircraft

Airline	Flights	Late	Canc.
United	329	10.4%	0.3%
Republic	85	11.8%	0.0%
Delta	424	16.0%	1.2%
Spirit	518	19.5%	0.0%
Envoy	66	21.9%	3.0%
Southwest	6,046	21.9%	0.1%
American	312	24.1%	1.6%
Frontier	263	29.9%	0.8%
Alaska	36	34.3%	2.8%

Airlines with 30+ departures that month.

Date	Flights	Late	Canc.
2016-01-23	205	—	100%
2016-01-24	210	—	100%
2026-01-25	238	20%	98%
2025-01-06	253	90%	58%
2016-12-17	244	93%	34%
2022-12-24	212	90%	36%
2017-03-14	282	38%	86%
2022-01-03	245	72%	62%
2022-12-26	249	72%	59%
2022-12-25	217	78%	38%
2022-01-04	204	79%	33%
2015-03-05	240	64%	57%

Departures; ranked by share late or cancelled.