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ICAO KBWI

Baltimore/Washington International Thurgood Marshall (BWI)

Baltimore/Washington International Thurgood Marshall Airport handled 2,271,950 passengers in July 2026, down 4.4% on a year earlier, according to the US BTS.

Official · July 2026 according to the US BTS Full count · domestic + international

Flights (arrivals + departures) over time

The most recent periods19 periods
PeriodFlights (arrivals + departures) 2025Flights (arrivals + departures) 2026Change vs last year
January14,94814,504▼ 3.0%
February14,43314,109▼ 2.2%
March17,30216,913▼ 2.2%
April17,97817,813▼ 0.9%
May18,42918,005▼ 2.3%
June18,75917,665▼ 5.8%
July19,04618,123▼ 4.8%
August18,208––
September17,406––
October18,579–in progress
November16,790––
December17,196––
Year to date (Jan–Jul)120,895117,132▼ 3.1%

Passengers over time

Full count · domestic + international
The most recent periods19 periods
PeriodPassengers 2025Passengers 2026Change vs last year
January1,577,4621,511,707▼ 4.2%
February1,512,1381,499,121▼ 0.9%
March1,994,4641,983,000▼ 0.6%
April2,139,6452,032,282▼ 5.0%
May2,291,1082,137,035▼ 6.7%
June2,343,9962,206,332▼ 5.9%
July2,375,3062,271,950▼ 4.4%
August2,277,373––
September2,035,664––
October2,230,252–in progress
November1,875,266––
December1,986,273––
Year to date (Jan–Jul)14,234,11913,641,427▼ 4.2%

Tonnes of cargo over time

Full count · domestic + international
The most recent periods19 periods
PeriodTonnes of cargo 2025Tonnes of cargo 2026Change vs last year
January15,34416,964▲ 10.6%
February16,47518,050▲ 9.6%
March16,17719,541▲ 20.8%
April19,80323,721▲ 19.8%
May18,36219,832▲ 8.0%
June16,24018,474▲ 13.8%
July19,55918,284▼ 6.5%
August19,240––
September18,575––
October22,232–in progress
November17,790––
December21,447––
Year to date (Jan–Jul)121,959134,867▲ 10.6%

Seats offered over time

Full count · domestic + international
The most recent periods19 periods
PeriodSeats offered 2025Seats offered 2026Change vs last year
January2,306,2702,239,567▼ 2.9%
February2,226,7262,133,187▼ 4.2%
March2,721,9252,589,905▼ 4.9%
April2,829,5682,742,407▼ 3.1%
May2,923,1352,785,246▼ 4.7%
June2,979,9152,746,053▼ 7.8%
July3,009,1652,823,799▼ 6.2%
August2,872,802––
September2,740,034––
October2,910,265–in progress
November2,625,745––
December2,667,174––
Year to date (Jan–Jul)18,996,70418,060,164▼ 4.9%

Domestic / International

July 2026
  • Domestic 96.0% 17,397
  • International 4.0% 726

Domestic / International — flights (arrivals + departures)

Full count · domestic + international

Domestic

The most recent periods19 periods
PeriodFlights (arrivals + departures) 2025Flights (arrivals + departures) 2026Change vs last year
January14,36713,963▼ 2.8%
February13,88213,563▼ 2.3%
March16,59016,185▼ 2.4%
April17,23617,111▼ 0.7%
May17,67817,298▼ 2.1%
June17,95516,951▼ 5.6%
July18,24217,397▼ 4.6%
August17,595––
September16,900––
October18,047–in progress
November16,209––
December16,578––
Year to date (Jan–Jul)115,950112,468▼ 3.0%

International

The most recent periods19 periods
PeriodFlights (arrivals + departures) 2025Flights (arrivals + departures) 2026Change vs last year
January581541▼ 6.9%
February551546▼ 0.9%
March712728▲ 2.2%
April742702▼ 5.4%
May751707▼ 5.9%
June804714▼ 11.2%
July804726▼ 9.7%
August613––
September506––
October532–in progress
November581––
December618––
Year to date (Jan–Jul)4,9454,664▼ 5.7%

Domestic / International — passengers

Full count · domestic + international

Domestic

The most recent periods19 periods
PeriodPassengers 2025Passengers 2026Change vs last year
January1,495,0051,445,314▼ 3.3%
February1,436,4391,436,2890.0%
March1,890,6381,889,7920.0%
April2,032,5671,938,754▼ 4.6%
May2,182,6022,042,467▼ 6.4%
June2,222,0462,100,188▼ 5.5%
July2,252,1942,161,755▼ 4.0%
August2,181,908––
September1,969,922––
October2,163,057–in progress
November1,813,325––
December1,911,466––
Year to date (Jan–Jul)13,511,49113,014,559▼ 3.7%

International

The most recent periods19 periods
PeriodPassengers 2025Passengers 2026Change vs last year
January82,45766,393▼ 19.5%
February75,69962,832▼ 17.0%
March103,82693,208▼ 10.2%
April107,07893,528▼ 12.7%
May108,50694,568▼ 12.8%
June121,950106,144▼ 13.0%
July123,112110,195▼ 10.5%
August95,465––
September65,742––
October67,195–in progress
November61,941––
December74,807––
Year to date (Jan–Jul)722,628626,868▼ 13.3%

Domestic / International — tonnes of cargo

Full count · domestic + international

Domestic

The most recent periods19 periods
PeriodTonnes of cargo 2025Tonnes of cargo 2026Change vs last year
January15,16616,805▲ 10.8%
February16,24417,854▲ 9.9%
March15,94819,232▲ 20.6%
April19,53723,535▲ 20.5%
May18,11519,700▲ 8.8%
June15,92118,352▲ 15.3%
July19,23618,065▼ 6.1%
August18,894––
September18,316––
October21,915–in progress
November17,445––
December21,147––
Year to date (Jan–Jul)120,168133,542▲ 11.1%

International

The most recent periods19 periods
PeriodTonnes of cargo 2025Tonnes of cargo 2026Change vs last year
January178159▼ 10.5%
February231196▼ 14.9%
March228309▲ 35.3%
April265187▼ 29.6%
May247132▼ 46.6%
June319122▼ 61.7%
July322220▼ 31.9%
August347––
September258––
October316–in progress
November345––
December300––
Year to date (Jan–Jul)1,7911,325▼ 26.0%

Domestic / International — seats offered

Full count · domestic + international

Domestic

The most recent periods19 periods
PeriodSeats offered 2025Seats offered 2026Change vs last year
January2,205,6042,151,458▼ 2.5%
February2,130,9312,043,830▼ 4.1%
March2,594,9422,464,630▼ 5.0%
April2,697,7672,621,592▼ 2.8%
May2,791,0682,665,062▼ 4.5%
June2,837,3422,620,567▼ 7.6%
July2,865,9732,695,551▼ 5.9%
August2,761,169––
September2,648,877––
October2,813,781–in progress
November2,528,662––
December2,562,920––
Year to date (Jan–Jul)18,123,62717,262,690▼ 4.8%

International

The most recent periods19 periods
PeriodSeats offered 2025Seats offered 2026Change vs last year
January100,66688,109▼ 12.5%
February95,79589,357▼ 6.7%
March126,983125,275▼ 1.3%
April131,801120,815▼ 8.3%
May132,067120,184▼ 9.0%
June142,573125,486▼ 12.0%
July143,192128,248▼ 10.4%
August111,633––
September91,157––
October96,484–in progress
November97,083––
December104,254––
Year to date (Jan–Jul)873,077797,474▼ 8.7%

Load factor (computed)

Full count · domestic + international

Passengers ÷ seats offered, both as reported by the US BTS for the same months. Computed by us; the two source series are shown on this page.

The most recent periods19 periods
PeriodLoad factor 2025Load factor 2026Change vs last year
January68.4%67.5%▼ 1.3%
February67.9%70.3%▲ 3.5%
March73.3%76.6%▲ 4.5%
April75.6%74.1%▼ 2.0%
May78.4%76.7%▼ 2.1%
June78.7%80.3%▲ 2.1%
July78.9%80.5%▲ 1.9%
August79.3%––
September74.3%––
October76.6%–in progress
November71.4%––
December74.5%––
Year-to-date average (Jan–Jul)74.5%75.1%▲ 0.9%

Seasonality · flights (arrivals + departures) by month

Year JanFebMarAprMayJunJulAugSepOctNovDec
2024 16,134 15,225 17,770 17,906 18,974 19,337 19,868 19,289 18,048 18,212 17,143 17,393
2025 14,948 14,433 17,302 17,978 18,429 18,759 19,046 18,208 17,406 18,579 16,790 17,196
2026 14,504 14,109 16,913 17,813 18,005 17,665 18,123
International share 4% of flights (arrivals + departures) in July 2026
Series depth 36 years from 1990

Busiest destinations

Flights recorded between Oct 12, 2024 and Jul 31, 2026, counted from flight records published by the US BTS. Not a current timetable.

Busiest destinations FlightsDistance (km)
Hartsfield Jackson Atlanta International Airport BWI–ATL → 20,250 928
Orlando International Airport BWI–MCO → 17,577 1,269
Boston Logan International Airport BWI–BOS → 13,687 594
Fort Lauderdale Hollywood International Airport BWI–FLL → 11,795 1,493
Charlotte Douglas International Airport BWI–CLT → 11,028 581
Denver International Airport BWI–DEN → 10,464 2,394
Tampa International Airport BWI–TPA → 10,183 1,358
Chicago O'Hare International Airport BWI–ORD → 9,485 998
Miami International Airport BWI–MIA → 8,452 1,526
Detroit Metropolitan Wayne County Airport BWI–DTW → 8,024 657

On-time departures by month

US domestic sectors recorded by BTS

61.7% of 8,119 timed departures from Baltimore/Washington International Thurgood Marshall Airport left within 15 minutes of schedule in July 2026, according to the US BTS. Cancelled flights are excluded.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January81.2%81.5%▲ 0.4%
February80.8%77.8%▼ 3.6%
March78.0%66.6%▼ 14.7%
April79.9%76.9%▼ 3.7%
May72.0%72.5%▲ 0.6%
June66.1%66.8%▲ 1.1%
July63.1%61.7%▼ 2.1%
August75.8%––
September83.3%––
October77.4%–in progress
November80.5%––
December69.0%––
Year-to-date average (Jan–Jul)74.4%72.0%▼ 3.3%

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay06:00–07:003.0min · 16,395 recorded · 16,159 measured
Gap to highest-delay hour26.9min06:00 ↔ 22:00
Recorded flights171,220Baltimore/Washington International Thurgood Marshall Airport

Departure hour

On-time departures Partial coverage: domestic flights only
00:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 92.6% · 1,594 recorded · 1,563 measured · Source: the US BTS 06:00 · 91.9% · 16,395 recorded · 16,159 measured · Source: the US BTS 07:00 · 89.3% · 6,371 recorded · 6,300 measured · Source: the US BTS 08:00 · 89.1% · 16,959 recorded · 16,774 measured · Source: the US BTS 09:00 · 82.9% · 8,356 recorded · 8,266 measured · Source: the US BTS 10:00 · 84.5% · 13,517 recorded · 13,348 measured · Source: the US BTS 11:00 · 81.1% · 8,669 recorded · 8,577 measured · Source: the US BTS 12:00 · 78.0% · 6,725 recorded · 6,652 measured · Source: the US BTS 13:00 · 73.6% · 8,558 recorded · 8,458 measured · Source: the US BTS 14:00 · 71.9% · 8,412 recorded · 8,344 measured · Source: the US BTS 15:00 · 67.7% · 9,607 recorded · 9,483 measured · Source: the US BTS 16:00 · 68.5% · 9,042 recorded · 8,905 measured · Source: the US BTS 17:00 · 64.2% · 9,709 recorded · 9,532 measured · Source: the US BTS 18:00 · 65.2% · 11,630 recorded · 11,399 measured · Source: the US BTS 19:00 · 61.5% · 10,563 recorded · 10,335 measured · Source: the US BTS 20:00 · 61.1% · 10,826 recorded · 10,557 measured · Source: the US BTS 21:00 · 59.0% · 8,223 recorded · 8,053 measured · Source: the US BTS 22:00 · 49.9% · 6,063 recorded · 5,836 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: domestic flights only
00:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 7.3 min · 1,594 recorded · 1,563 measured · Source: the US BTS 06:00 · 3.0 min · 16,395 recorded · 16,159 measured · Source: the US BTS 07:00 · 4.1 min · 6,371 recorded · 6,300 measured · Source: the US BTS 08:00 · 4.8 min · 16,959 recorded · 16,774 measured · Source: the US BTS 09:00 · 8.3 min · 8,356 recorded · 8,266 measured · Source: the US BTS 10:00 · 7.3 min · 13,517 recorded · 13,348 measured · Source: the US BTS 11:00 · 10.3 min · 8,669 recorded · 8,577 measured · Source: the US BTS 12:00 · 13.1 min · 6,725 recorded · 6,652 measured · Source: the US BTS 13:00 · 15.2 min · 8,558 recorded · 8,458 measured · Source: the US BTS 14:00 · 16.2 min · 8,412 recorded · 8,344 measured · Source: the US BTS 15:00 · 18.4 min · 9,607 recorded · 9,483 measured · Source: the US BTS 16:00 · 19.1 min · 9,042 recorded · 8,905 measured · Source: the US BTS 17:00 · 23.6 min · 9,709 recorded · 9,532 measured · Source: the US BTS 18:00 · 23.4 min · 11,630 recorded · 11,399 measured · Source: the US BTS 19:00 · 26.2 min · 10,563 recorded · 10,335 measured · Source: the US BTS 20:00 · 24.8 min · 10,826 recorded · 10,557 measured · Source: the US BTS 21:00 · 24.7 min · 8,223 recorded · 8,053 measured · Source: the US BTS 22:00 · 29.8 min · 6,063 recorded · 5,836 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: domestic flights only
00:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 1,594 · 1,594 recorded · 1,563 measured · Source: the US BTS 06:00 · 16,395 · 16,395 recorded · 16,159 measured · Source: the US BTS 07:00 · 6,371 · 6,371 recorded · 6,300 measured · Source: the US BTS 08:00 · 16,959 · 16,959 recorded · 16,774 measured · Source: the US BTS 09:00 · 8,356 · 8,356 recorded · 8,266 measured · Source: the US BTS 10:00 · 13,517 · 13,517 recorded · 13,348 measured · Source: the US BTS 11:00 · 8,669 · 8,669 recorded · 8,577 measured · Source: the US BTS 12:00 · 6,725 · 6,725 recorded · 6,652 measured · Source: the US BTS 13:00 · 8,558 · 8,558 recorded · 8,458 measured · Source: the US BTS 14:00 · 8,412 · 8,412 recorded · 8,344 measured · Source: the US BTS 15:00 · 9,607 · 9,607 recorded · 9,483 measured · Source: the US BTS 16:00 · 9,042 · 9,042 recorded · 8,905 measured · Source: the US BTS 17:00 · 9,709 · 9,709 recorded · 9,532 measured · Source: the US BTS 18:00 · 11,630 · 11,630 recorded · 11,399 measured · Source: the US BTS 19:00 · 10,563 · 10,563 recorded · 10,335 measured · Source: the US BTS 20:00 · 10,826 · 10,826 recorded · 10,557 measured · Source: the US BTS 21:00 · 8,223 · 8,223 recorded · 8,053 measured · Source: the US BTS 22:00 · 6,063 · 6,063 recorded · 5,836 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00Fewer than 200 measured departures—11
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:0092.6%7.3 min1,5631,594
06:0091.9%3.0 min16,15916,395
07:0089.3%4.1 min6,3006,371
08:0089.1%4.8 min16,77416,959
09:0082.9%8.3 min8,2668,356
10:0084.5%7.3 min13,34813,517
11:0081.1%10.3 min8,5778,669
12:0078.0%13.1 min6,6526,725
13:0073.6%15.2 min8,4588,558
14:0071.9%16.2 min8,3448,412
15:0067.7%18.4 min9,4839,607
16:0068.5%19.1 min8,9059,042
17:0064.2%23.6 min9,5329,709
18:0065.2%23.4 min11,39911,630
19:0061.5%26.2 min10,33510,563
20:0061.1%24.8 min10,55710,826
21:0059.0%24.7 min8,0538,223
22:0049.9%29.8 min5,8366,063
23:00No observations———

Day of week

On-time departures Partial coverage: domestic flights only
Monday · 72.6% · 25,737 recorded · 25,068 measured · Source: the US BTS Tuesday · 79.9% · 23,285 recorded · 22,930 measured · Source: the US BTS Wednesday · 80.0% · 23,277 recorded · 23,097 measured · Source: the US BTS Thursday · 74.0% · 25,354 recorded · 25,110 measured · Source: the US BTS Friday · 74.0% · 25,810 recorded · 25,525 measured · Source: the US BTS Saturday · 74.0% · 22,297 recorded · 22,059 measured · Source: the US BTS Sunday · 69.1% · 25,460 recorded · 24,753 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: domestic flights only
Monday · 17.4 min · 25,737 recorded · 25,068 measured · Source: the US BTS Tuesday · 10.5 min · 23,285 recorded · 22,930 measured · Source: the US BTS Wednesday · 11.0 min · 23,277 recorded · 23,097 measured · Source: the US BTS Thursday · 15.3 min · 25,354 recorded · 25,110 measured · Source: the US BTS Friday · 16.0 min · 25,810 recorded · 25,525 measured · Source: the US BTS Saturday · 14.9 min · 22,297 recorded · 22,059 measured · Source: the US BTS Sunday · 18.6 min · 25,460 recorded · 24,753 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: domestic flights only
Monday · 25,737 · 25,737 recorded · 25,068 measured · Source: the US BTS Tuesday · 23,285 · 23,285 recorded · 22,930 measured · Source: the US BTS Wednesday · 23,277 · 23,277 recorded · 23,097 measured · Source: the US BTS Thursday · 25,354 · 25,354 recorded · 25,110 measured · Source: the US BTS Friday · 25,810 · 25,810 recorded · 25,525 measured · Source: the US BTS Saturday · 22,297 · 22,297 recorded · 22,059 measured · Source: the US BTS Sunday · 25,460 · 25,460 recorded · 24,753 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday72.6%17.4 min25,06825,737
Tuesday79.9%10.5 min22,93023,285
Wednesday80.0%11.0 min23,09723,277
Thursday74.0%15.3 min25,11025,354
Friday74.0%16.0 min25,52525,810
Saturday74.0%14.9 min22,05922,297
Sunday69.1%18.6 min24,75325,460

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: domestic flights only
Jan · 81.4% · 14,028 recorded · 13,328 measured · Source: the US BTS Feb · 79.3% · 13,123 recorded · 12,840 measured · Source: the US BTS Mar · 72.4% · 15,730 recorded · 15,434 measured · Source: the US BTS Apr · 78.4% · 16,148 recorded · 16,096 measured · Source: the US BTS May · 72.2% · 16,572 recorded · 16,507 measured · Source: the US BTS Jun · 66.4% · 16,705 recorded · 16,495 measured · Source: the US BTS Jul · 62.4% · 17,407 recorded · 16,716 measured · Source: the US BTS Aug · 75.8% · 8,381 recorded · 8,317 measured · Source: the US BTS Sep · 83.3% · 7,968 recorded · 7,954 measured · Source: the US BTS Oct · 79.1% · 13,870 recorded · 13,840 measured · Source: the US BTS Nov · 82.5% · 15,517 recorded · 15,368 measured · Source: the US BTS Dec · 71.6% · 15,771 recorded · 15,647 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: domestic flights only
Jan · 9.2 min · 14,028 recorded · 13,328 measured · Source: the US BTS Feb · 10.7 min · 13,123 recorded · 12,840 measured · Source: the US BTS Mar · 17.8 min · 15,730 recorded · 15,434 measured · Source: the US BTS Apr · 11.2 min · 16,148 recorded · 16,096 measured · Source: the US BTS May · 16.1 min · 16,572 recorded · 16,507 measured · Source: the US BTS Jun · 22.3 min · 16,705 recorded · 16,495 measured · Source: the US BTS Jul · 29.1 min · 17,407 recorded · 16,716 measured · Source: the US BTS Aug · 14.3 min · 8,381 recorded · 8,317 measured · Source: the US BTS Sep · 7.8 min · 7,968 recorded · 7,954 measured · Source: the US BTS Oct · 9.4 min · 13,870 recorded · 13,840 measured · Source: the US BTS Nov · 8.4 min · 15,517 recorded · 15,368 measured · Source: the US BTS Dec · 15.1 min · 15,771 recorded · 15,647 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: domestic flights only
Jan · 14,028 · 14,028 recorded · 13,328 measured · Source: the US BTS Feb · 13,123 · 13,123 recorded · 12,840 measured · Source: the US BTS Mar · 15,730 · 15,730 recorded · 15,434 measured · Source: the US BTS Apr · 16,148 · 16,148 recorded · 16,096 measured · Source: the US BTS May · 16,572 · 16,572 recorded · 16,507 measured · Source: the US BTS Jun · 16,705 · 16,705 recorded · 16,495 measured · Source: the US BTS Jul · 17,407 · 17,407 recorded · 16,716 measured · Source: the US BTS Aug · 8,381 · 8,381 recorded · 8,317 measured · Source: the US BTS Sep · 7,968 · 7,968 recorded · 7,954 measured · Source: the US BTS Oct · 13,870 · 13,870 recorded · 13,840 measured · Source: the US BTS Nov · 15,517 · 15,517 recorded · 15,368 measured · Source: the US BTS Dec · 15,771 · 15,771 recorded · 15,647 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan81.4%9.2 min13,32814,028
Feb79.3%10.7 min12,84013,123
Mar72.4%17.8 min15,43415,730
Apr78.4%11.2 min16,09616,148
May72.2%16.1 min16,50716,572
Jun66.4%22.3 min16,49516,705
Jul62.4%29.1 min16,71617,407
Aug75.8%14.3 min8,3178,381
Sep83.3%7.8 min7,9547,968
Oct79.1%9.4 min13,84013,870
Nov82.5%8.4 min15,36815,517
Dec71.6%15.1 min15,64715,771

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 73.5% 125,890
  • Delayed >15 min 24.9% 42,652
  • Cancelled 1.6% 2,678
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Environment

Air pollutants at the airport (EPA estimate)

Modelled estimate, not a measurement: aircraft below 3,000 ft (landing and take-off), ground support equipment and auxiliary power units, plus any stationary sources the state reported at the airport site. Cruise emissions are not included.

In 2023, the US EPA estimated 908 tonnes of nitrogen oxides (NOₓ) and 12.9 tonnes of fine particles (PM2.5) from activity at Baltimore/Washington International Thurgood Marshall Airport, according to the EPA National Emissions Inventory.

PollutantUnit201720202023
NOₓ (Nitrogen oxides)tonnes834608908
CO (Carbon monoxide)tonnes2,2526921,131
SO₂ (Sulphur dioxide)tonnes12257.795.3
VOC (Volatile organic compounds)tonnes293257121
PM2.5 (Fine particles)tonnes16.810.812.9
PM10 (Particulate matter)tonnes17.511.113.1
Leadkg64.027.128.3
CO₂ (Carbon dioxide)tonnes306,263150,876—

The inventory is published every three years. Coverage changes between editions (about 19,300 airport sites in 2017, 6,000 in 2020, 12,700 in 2023), 2020 reflects the pandemic drop in traffic, and EPA updates its aircraft model between editions — so the columns are not a trend (Los Angeles: 3,562 tonnes of NOₓ in 2017, 8,810 in 2023). CO₂ is only reported for some sites in 2017, for all sites in 2020, and not at all in 2023. EPA publishes US customary units; converted here to metric tonnes (× 0.907) and, for lead, kilograms.

US EPA — National Emissions Inventory

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