Domestic / International — flights (arrivals + departures)
Full count · domestic + international
Domestic
Data Integrity
0 100 200 300 400 392
January 2024 September 2024 April 2025 December 2025 July 2026
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The most recent periods19 periods
Period
Flights (arrivals + departures) 2025
Flights (arrivals + departures) 2026
Change vs last year
January
85
104
▲ 22.4%
February
84
85
▲ 1.2%
March
92
87
▼ 5.4%
April
93
95
▲ 2.2%
May
140
88
▼ 37.1%
June
126
275
▲ 118.3%
July
99
392
▲ 296.0%
August
95
–
–
September
67
–
–
October
121
–
in progress
November
129
–
–
December
106
–
–
Year to date (Jan–Jul)
719
1,126
▲ 56.6%
International
Data Integrity
0 10 20 30 19
January 2024 September 2024 April 2025 December 2025 July 2026
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The most recent periods19 periods
Period
Flights (arrivals + departures) 2025
Flights (arrivals + departures) 2026
Change vs last year
January
28
9
▼ 67.9%
February
19
11
▼ 42.1%
March
15
21
▲ 40.0%
April
18
10
▼ 44.4%
May
25
22
▼ 12.0%
June
11
26
▲ 136.4%
July
19
19
0.0%
August
14
–
–
September
14
–
–
October
13
–
in progress
November
19
–
–
December
20
–
–
Year to date (Jan–Jul)
135
118
▼ 12.6%
Domestic / International — passengers
Full count · domestic + international
Domestic
Data Integrity
0 2,000 4,000 6,000 2,233
January 2024 September 2024 April 2025 December 2025 July 2026
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The most recent periods19 periods
Period
Passengers 2025
Passengers 2026
Change vs last year
January
1,788
2,963
▲ 65.7%
February
2,289
2,391
▲ 4.5%
March
2,922
2,898
▼ 0.8%
April
2,085
2,108
▲ 1.1%
May
4,072
1,973
▼ 51.5%
June
2,659
5,266
▲ 98.0%
July
1,401
2,233
▲ 59.4%
August
1,397
–
–
September
2,504
–
–
October
3,569
–
in progress
November
3,350
–
–
December
2,588
–
–
Year to date (Jan–Jul)
17,216
19,832
▲ 15.2%
International
Data Integrity
0 200 400 600 800 1,000 334
January 2024 September 2024 April 2025 December 2025 July 2026
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The most recent periods19 periods
Period
Passengers 2025
Passengers 2026
Change vs last year
January
393
78
▼ 80.2%
February
575
56
▼ 90.3%
March
148
299
▲ 102.0%
April
107
314
▲ 193.5%
May
674
856
▲ 27.0%
June
97
102
▲ 5.2%
July
309
334
▲ 8.1%
August
52
–
–
September
105
–
–
October
139
–
in progress
November
153
–
–
December
317
–
–
Year to date (Jan–Jul)
2,303
2,039
▼ 11.5%
Domestic / International — seats offered
Full count · domestic + international
Domestic
Data Integrity
0 5K 10K 15K 20K 7.7K
January 2024 September 2024 April 2025 December 2025 July 2026
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The most recent periods19 periods
Period
Seats offered 2025
Seats offered 2026
Change vs last year
January
5,207
9,206
▲ 76.8%
February
7,310
7,999
▲ 9.4%
March
8,918
9,673
▲ 8.5%
April
6,689
7,608
▲ 13.7%
May
12,882
8,251
▼ 35.9%
June
8,427
13,827
▲ 64.1%
July
6,086
7,671
▲ 26.0%
August
3,480
–
–
September
9,163
–
–
October
9,065
–
in progress
November
7,895
–
–
December
9,802
–
–
Year to date (Jan–Jul)
55,519
64,235
▲ 15.7%
International
Data Integrity
0 500 1,000 1,500 935
January 2024 September 2024 April 2025 December 2025 July 2026
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The most recent periods19 periods
Period
Seats offered 2025
Seats offered 2026
Change vs last year
January
1,007
148
▼ 85.3%
February
768
125
▼ 83.7%
March
306
906
▲ 196.1%
April
481
854
▲ 77.5%
May
1,642
1,219
▼ 25.8%
June
204
322
▲ 57.8%
July
1,068
935
▼ 12.5%
August
191
–
–
September
684
–
–
October
462
–
in progress
November
397
–
–
December
886
–
–
Year to date (Jan–Jul)
5,476
4,509
▼ 17.7%
Load factor (computed)
Full count · domestic + international
Data Integrity
0 20 40 60 29.8
January 2024 September 2024 April 2025 December 2025 July 2026
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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
Period
Load factor 2025
Load factor 2026
Change vs last year
January
35.1%
32.5%
▼ 7.4%
February
35.5%
30.1%
▼ 15.0%
March
33.3%
30.2%
▼ 9.2%
April
30.6%
28.6%
▼ 6.4%
May
32.7%
29.9%
▼ 8.6%
June
31.9%
37.9%
▲ 18.8%
July
23.9%
29.8%
▲ 24.8%
August
39.5%
–
–
September
26.5%
–
–
October
38.9%
–
in progress
November
42.2%
–
–
December
27.2%
–
–
Year-to-date average (Jan–Jul)
31.8%
31.3%
▼ 1.7%
Seasonality · flights (arrivals + departures) by month
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2024
116
100
178
109
142
141
96
99
125
128
124
106
2025
113
103
107
111
165
137
118
109
81
134
148
126
2026
113
96
108
105
110
301
411
International share5%of flights (arrivals + departures) in July 2026
Series depth36 yearsfrom 1990
Our own count, day by day
We counted 6,716 departures and arrivals at Laurence G Hanscom Field over the last 32 complete days, from the airport's own public flight board.
Our own count · not official · not comparable with the figure above
Partial coverage: only flights tracked by volunteer radio receivers · 32 of 32 periods have data
0 100 200 210
07-31 08-08 08-16 08-23 08-31
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Partial coverage: only flights tracked by volunteer radio receivers · 2 of 2 periods have data
0 2,000 4,000 6,000 8,000
July 2026 (1/31 days) August 2026
Short series — months has only 2 months so far. Enough to show the level now, not enough to read a trend.
Sum of our daily count. “n/N days” = incomplete period.
Partial coverage: only flights tracked by volunteer radio receivers · 1 of 1 periods have data
0 2K 4K 6K 8K 10K
Q3 2026 (32/92 days)
Short series — quarters has only 1 quarters so far. Enough to show the level now, not enough to read a trend.
Sum of our daily count. “n/N days” = incomplete period.
Partial coverage: only flights tracked by volunteer radio receivers · 1 of 1 periods have data
0 2K 4K 6K 8K 10K
2026 (32/365 days)
Short series — years has only 1 years so far. Enough to show the level now, not enough to read a trend.
Sum of our daily count. “n/N days” = incomplete period.
The most recent periods30 periods
30 of 30
Period
Flights counted
7-day total
Aug 31, 2026
210
1,682
Aug 30, 2026
269
1,677
Aug 29, 2026
234
1,576
Aug 28, 2026
249
1,465
Aug 27, 2026
219
1,400
Aug 26, 2026
250
1,412
Aug 25, 2026
251
1,417
Aug 24, 2026
205
1,373
Aug 23, 2026
168
1,341
Aug 22, 2026
123
1,384
Aug 21, 2026
184
1,462
Aug 20, 2026
231
1,494
Aug 19, 2026
255
1,504
Aug 18, 2026
207
1,495
Aug 17, 2026
173
1,519
Aug 16, 2026
211
1,579
Aug 15, 2026
201
1,599
Aug 14, 2026
216
1,587
Aug 13, 2026
241
1,618
Aug 12, 2026
246
1,582
Aug 11, 2026
231
1,574
Aug 10, 2026
233
1,581
Aug 9, 2026
231
1,494
Aug 8, 2026
189
1,471
Aug 7, 2026
247
1,484
Aug 6, 2026
205
1,242
Aug 5, 2026
238
Aug 4, 2026
238
Aug 3, 2026
146
Aug 2, 2026
208
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 12.9 tonnes of nitrogen oxides (NOₓ) and 7.7 tonnes of fine particles (PM2.5) from activity at Laurence G Hanscom Field, according to the EPA National Emissions Inventory.
Pollutant
Unit
2017
2020
2023
NOₓ (Nitrogen oxides)
tonnes
12.5
8.6
12.9
CO (Carbon monoxide)
tonnes
344
235
286
SO₂ (Sulphur dioxide)
tonnes
2.0
1.5
2.2
VOC (Volatile organic compounds)
tonnes
13.9
12.4
13.9
PM2.5 (Fine particles)
tonnes
7.3
5.9
7.7
PM10 (Particulate matter)
tonnes
9.0
6.9
9.1
Lead
kg
302
175
242
CO₂ (Carbon dioxide)
tonnes
972
15,197
—
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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