Airport · BWI · Baltimore, Maryland

Baltimore, MD

Baltimore, MD posts bottom-quartile on-time performance among the 382 tracked U.S. airports, as one of the busiest U.S. airports. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 1,049,006 flights (2020–2025); its biggest delay driver is carrier.

Compiled by PlainFlights Editorial, Flight Performance Editorial Team

Data updated 2026-06-13

78%
On-time: Top 91%
on-time, US airports: 61 min
Delay when late: 1.25%
Cancelled

Key Performance Metrics

Total Flights

1,049,006

Best Month

Feb 90.6%

Worst Month

Jul 82.2%

Delayed

230,270

Cancelled

13,150

60-65%

1
65-70%

4
70-75%

9
75-80%

48
80-85%

192
85-90%

116
90-95%

12

What this shows BWI is marked in the 75-80% band.

Delay Cause Breakdown

Top delay cause: Carrier. Total delay minutes: 6,709,746.

Late Aircraft 38.2% (2,564,475 min)

Carrier 38.9% (2,608,315 min)

NAS (National Aviation System) 18.9% (1,269,295 min)

Weather 3.7% (248,108 min)

Security 0.3% (19,553 min)

Seasonal Performance Patterns

Monthly averages across all years of data. Best month: February (90.6% on-time). Most delays: July (82.2% on-time).

Month	Avg Flights	Avg Delayed	Avg Cancelled	On-Time %
December	14,533	3,459	182	85.6%
November	14,393	2,367	52	90.1%
October	15,290	2,976	76	88%
September	14,557	2,582	85	89.2%
August	15,843	4,140	214	84.5%
July	15,960	4,909	161	82.2%
June	14,638	4,264	146	82.9%
May	14,116	3,399	85	85.7%
April	14,276	3,018	539	87.3%
March	14,927	2,799	264	88.7%
February	12,548	1,992	143	90.6%
January	13,755	2,475	246	89.5%

Year-Over-Year Performance

Annual flight volume and on-time trends at BWI.

Year	Flights	Delayed	Cancelled	On-Time %
2025	192,208	24,383	1,292	87.3%
2024	197,147	27,863	1,127	85.9%
2023	192,530	28,030	1,022	85.4%
2022	173,131	28,606	3,101	83.5%
2021	150,744	21,317	1,890	85.9%
2020	143,246	6,855	4,718	95.2%

Cancellation & Diversion Analysis

Flight disruption statistics for Baltimore, MD.

Cancellation Rate

1.25%

13,150 of 1,049,006 flights

Diversion Rate

0.10%

1,013 of 1,049,006 flights

Delay Rate

22.0%

230,270 of 1,049,006 flights

Monthly Performance

Recent 24 months of flight data.

Period	Flights	Dep Delayed	Arr Delayed	Cancelled	Diverted
Dec 2025	15,726	2,486	1,808	100	19
Nov 2025	15,443	1,540	1,193	139	6
Oct 2025	16,954	2,002	1,446	12	12
Sep 2025	15,933	1,408	1,076	14	13
Aug 2025	16,762	2,083	1,715	64	25
Jul 2025	17,845	3,278	2,662	325	23
Jun 2025	17,323	2,992	2,383	117	22
May 2025	16,823	2,442	1,845	42	29
Apr 2025	16,220	1,718	1,393	25	17
Mar 2025	15,854	1,785	1,304	95	15
Feb 2025	13,139	1,312	980	48	11
Jan 2025	14,186	1,337	964	311	6
Dec 2024	15,815	2,125	1,391	24	22
Nov 2024	15,590	1,278	874	10	7
Oct 2024	16,806	1,603	1,099	121	10
Sep 2024	16,545	1,620	1,103	47	8
Aug 2024	17,886	3,141	2,224	231	19
Jul 2024	18,136	3,934	2,785	148	30
Jun 2024	17,557	3,066	2,019	92	17
May 2024	17,309	3,023	2,101	52	31
Apr 2024	16,465	2,195	1,449	53	15
Mar 2024	16,146	2,396	1,568	57	14
Feb 2024	13,789	1,188	908	18	5
Jan 2024	15,103	2,294	1,627	274	16

Top Routes from BWI

Busiest routes to and from Baltimore, MD.

Route	Flights	On-Time	Distance
ATL (Atlanta) → BWI (Baltimore)	31,846	80.2%	577 mi
BWI (Baltimore) → ATL (Atlanta)	31,798	82.1%	577 mi
MCO (Orlando) → BWI (Baltimore)	29,125	77%	787 mi
BWI (Baltimore) → MCO (Orlando)	29,050	76.2%	787 mi
BWI (Baltimore) → FLL (Fort Lauderdale)	21,397	77.2%	925 mi
FLL (Fort Lauderdale) → BWI (Baltimore)	21,264	79%	925 mi
BWI (Baltimore) → BOS (Boston)	19,573	78.1%	369 mi
BOS (Boston) → BWI (Baltimore)	19,555	83.1%	369 mi
CLT (Charlotte) → BWI (Baltimore)	17,853	78.7%	361 mi
BWI (Baltimore) → CLT (Charlotte)	17,823	81.7%	361 mi
BWI (Baltimore) → TPA (Tampa)	17,031	78.5%	842 mi
TPA (Tampa) → BWI (Baltimore)	16,876	82.5%	842 mi
DEN (Denver) → BWI (Baltimore)	16,408	76.3%	1,491 mi
BWI (Baltimore) → ORD (Chicago)	16,274	81.3%	622 mi
BWI (Baltimore) → DEN (Denver)	16,251	78.5%	1,491 mi
ORD (Chicago) → BWI (Baltimore)	16,227	79%	622 mi
MIA (Miami) → BWI (Baltimore)	12,585	75.9%	946 mi
BWI (Baltimore) → MIA (Miami)	12,562	74.9%	946 mi
BWI (Baltimore) → DTW (Detroit)	12,064	82.9%	409 mi
DTW (Detroit) → BWI (Baltimore)	12,056	85.3%	409 mi

Airports With a Similar On-Time Rate

Other U.S. airports nationwide whose on-time rate is closest to Baltimore, MD's 78%.

Las Vegas, NV

78% on-time 1,986,833 flights

Eagle, CO

78% on-time 37,271 flights

Newark, NJ

78.1% on-time 1,354,054 flights

Miami, FL

77.9% on-time 1,160,127 flights

Islip, NY

77.9% on-time 54,300 flights

Flint, MI

78.1% on-time 31,426 flights

Other Airports in Maryland

Compare performance with other Maryland airports.

HGR 69.2%

Hagerstown, MD

Hagerstown · 2,806 flights

Keep exploring

More flight data around Baltimore, MD.

Maryland flight data

Statewide on-time and delay aggregates, plus every reporting airport in Maryland.

View MD data →

Airport rankings

See where BWI sits among U.S. airports on on-time rate and average delay.

Best on-time airports →

Compare airports

Put BWI head-to-head with another airport on delays and reliability.

Open comparison tool →

What the Data Says About BWI

Baltimore, MD in Baltimore, Maryland handled 1,049,006 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 78% on-time departure rate. Of those flights, 230,270 experienced delays, 13,150 were cancelled, and 1,013 were diverted. The cancellation rate works out to 1.25%, the diversion rate to 0.10%, and the average delay when departures run late is 61.0 minutes. These figures are the baseline for comparing BWI against other airports in the same state and nationally.

Breaking down what drives delays at BWI, Carrier leads the pack. Carrier accounts for 38.9% of total delay minutes, followed by Late Aircraft at 38.2% and NAS (National Aviation System) at 18.9%. Weather contributes 3.7% of delay minutes at this airport, while security holds the smallest share at 0.3%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, February runs the cleanest at BWI with a 90.6% on-time rate, while July is the roughest at 82.2% - a 8-point swing between best and worst month. Volume peaks in July, when average flights hit 15,960. The busiest route connecting BWI is to ATL (Atlanta), with 31,846 flights at a 80.2% on-time rate. Combine these numbers - 78% on-time, 61.0-minute average delay, 1.25% cancellation rate, and you have a concrete picture of departure reliability at Baltimore, MD.

Frequently Asked Questions

What is the on-time performance rate at Baltimore, MD (BWI)? ▼

Baltimore, MD has an overall on-time departure rate of 78%. Out of 1,049,006 total flights tracked, 230,270 experienced delays and 13,150 were cancelled.

What is the most common cause of delays at BWI? ▼

The top delay cause at Baltimore, MD is Carrier. Carrier accounts for 38.9% of all delay minutes.

What is the average delay time at BWI? ▼

The average delay at Baltimore, MD is 61.0 minutes. This includes delays from carrier issues, weather, National Aviation System constraints, security, and late-arriving aircraft.

What is the best month to fly from BWI? ▼

Based on historical data, February has the best on-time performance at BWI with 90.6% of flights departing on time.

What is the worst month for delays at BWI? ▼

July tends to have the most delays at BWI, with an on-time rate of only 82.2%.

How many routes operate from BWI? ▼

Baltimore, MD serves at least 20 routes. The busiest route is ATL to BWI (Atlanta - Baltimore) with 31,846 flights.

What is the cancellation rate at BWI? ▼

Baltimore, MD has a cancellation rate of 1.25%, based on 13,150 cancelled flights out of 1,049,006 total flights tracked.

Flight Guides

Data-driven guides to help you understand airport and flight performance.

Best & Worst Airlines for On-Time Performance

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Why Flights Get Cancelled

Cancellation causes broken down by data

How to Choose Reliable Flight Routes

Use delay data to pick flights that arrive on time

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Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025). Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.

Read our methodology - how this data is sourced, computed, and verified.

Using BWI's data

An airport-level on-time rate is a starting point, not a guarantee for your specific flight.

Check the busiest route from BWI before you book a connection. See top routes
Travel in February rather than July if your dates are flexible. Seasonal patterns
Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines

On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.

All airports → | Rankings →

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights Editorial

Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025 Accessed 2026-07-23

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.