Countries › United States › Buffalo › BUF Buffalo Niagara (BUF) BUF / KBUF
453,191
Buffalo Niagara International Airport handled 453,191 passengers in May 2026, down 0.1% on a year earlier, according to US Bureau of Transportation Statistics — T-100 Air Carrier Statistics .
Full count · domestic + international Flight timing & delays ↓
Passengers over time Showing 53 months. Full series runs 1990–2026 (437 periods).
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Against 2019 -0.3% same month, before the pandemic
Series depth 36 years from 1990
The most recent periods Open any period for the full breakdown. As published Newest first Oldest first Highest first Lowest first 24 of 24
Period Passengers Year on year Source May 2026 453,191 −0.1% US Bureau of Transportation Statistics Open this month → April 2026 396,054 −3.1% US Bureau of Transportation Statistics Open this month → March 2026 386,538 −2.8% US Bureau of Transportation Statistics Open this month → February 2026 315,090 −2.9% US Bureau of Transportation Statistics Open this month → January 2026 293,622 −8.6% US Bureau of Transportation Statistics Open this month → December 2025 366,775 −5.2% US Bureau of Transportation Statistics Open this month → November 2025 388,694 −3.2% US Bureau of Transportation Statistics Open this month → October 2025 470,830 +2.8% US Bureau of Transportation Statistics Open this month → September 2025 444,667 −0.8% US Bureau of Transportation Statistics Open this month → August 2025 534,788 +5.4% US Bureau of Transportation Statistics Open this month → July 2025 510,603 +3.1% US Bureau of Transportation Statistics Open this month → June 2025 446,705 −2.1% US Bureau of Transportation Statistics Open this month → May 2025 453,474 +1.2% US Bureau of Transportation Statistics Open this month → April 2025 408,903 +2.0% US Bureau of Transportation Statistics Open this month → March 2025 397,515 −1.4% US Bureau of Transportation Statistics Open this month → February 2025 324,510 −1.2% US Bureau of Transportation Statistics Open this month → January 2025 321,392 +13.7% US Bureau of Transportation Statistics Open this month → December 2024 386,918 +15.7% US Bureau of Transportation Statistics Open this month → November 2024 401,707 +6.8% US Bureau of Transportation Statistics Open this month → October 2024 458,180 +1.6% US Bureau of Transportation Statistics Open this month → September 2024 448,066 +5.6% US Bureau of Transportation Statistics Open this month → August 2024 507,161 +8.6% US Bureau of Transportation Statistics July 2024 495,428 +15.2% US Bureau of Transportation Statistics June 2024 456,383 +16.8% US Bureau of Transportation Statistics
Also tracked here: aircraft movements (through May 2026), tonnes of cargo (through May 2026).
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: BTS · US Department of Transportation · 2024-09-01 → 2026-06-30
Lowest average delay 07:00–08:00 4.1min · 3,209 recorded · 3,170 measured
Gap to highest-delay hour 19.4min 07:00 ↔ 17:00
Recorded flights 38,108 Buffalo Niagara International Airport
Departure hour Day of week Month of year
Departure hour On-time departures 100.0 50.0 0.0
00:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 01:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 02:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 03:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 04:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 05:00 · 91.9% · 1,889 recorded · 1,840 measured · Source: BTS · US Department of Transportation 06:00 · 90.7% · 6,562 recorded · 6,456 measured · Source: BTS · US Department of Transportation 07:00 · 92.0% · 3,209 recorded · 3,170 measured · Source: BTS · US Department of Transportation 08:00 · 89.3% · 1,896 recorded · 1,872 measured · Source: BTS · US Department of Transportation 09:00 · 87.8% · 1,073 recorded · 1,061 measured · Source: BTS · US Department of Transportation 10:00 · 88.6% · 2,072 recorded · 2,045 measured · Source: BTS · US Department of Transportation 11:00 · 82.6% · 2,695 recorded · 2,661 measured · Source: BTS · US Department of Transportation 12:00 · 78.1% · 2,963 recorded · 2,909 measured · Source: BTS · US Department of Transportation 13:00 · 77.6% · 1,834 recorded · 1,804 measured · Source: BTS · US Department of Transportation 14:00 · 74.9% · 1,393 recorded · 1,352 measured · Source: BTS · US Department of Transportation 15:00 · 72.8% · 1,619 recorded · 1,587 measured · Source: BTS · US Department of Transportation 16:00 · 69.9% · 2,067 recorded · 2,026 measured · Source: BTS · US Department of Transportation 17:00 · 69.1% · 3,491 recorded · 3,376 measured · Source: BTS · US Department of Transportation 18:00 · 70.6% · 2,197 recorded · 2,136 measured · Source: BTS · US Department of Transportation 19:00 · 69.6% · 2,240 recorded · 2,185 measured · Source: BTS · US Department of Transportation 20:00 · 62.9% · 697 recorded · 685 measured · Source: BTS · US Department of Transportation 21:00 · Fewer than 200 measured departures · 175 recorded · 170 measured · Source: BTS · US Department of Transportation 22:00 · Fewer than 200 measured departures · 36 recorded · 35 measured · Source: BTS · US Department of Transportation 23:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
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Average departure delay 23.6 11.8 0.0
00:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 01:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 02:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 03:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 04:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 05:00 · 7.1 min · 1,889 recorded · 1,840 measured · Source: BTS · US Department of Transportation 06:00 · 7.0 min · 6,562 recorded · 6,456 measured · Source: BTS · US Department of Transportation 07:00 · 4.1 min · 3,209 recorded · 3,170 measured · Source: BTS · US Department of Transportation 08:00 · 6.5 min · 1,896 recorded · 1,872 measured · Source: BTS · US Department of Transportation 09:00 · 5.0 min · 1,073 recorded · 1,061 measured · Source: BTS · US Department of Transportation 10:00 · 4.2 min · 2,072 recorded · 2,045 measured · Source: BTS · US Department of Transportation 11:00 · 10.5 min · 2,695 recorded · 2,661 measured · Source: BTS · US Department of Transportation 12:00 · 12.6 min · 2,963 recorded · 2,909 measured · Source: BTS · US Department of Transportation 13:00 · 14.4 min · 1,834 recorded · 1,804 measured · Source: BTS · US Department of Transportation 14:00 · 18.8 min · 1,393 recorded · 1,352 measured · Source: BTS · US Department of Transportation 15:00 · 16.4 min · 1,619 recorded · 1,587 measured · Source: BTS · US Department of Transportation 16:00 · 18.2 min · 2,067 recorded · 2,026 measured · Source: BTS · US Department of Transportation 17:00 · 23.6 min · 3,491 recorded · 3,376 measured · Source: BTS · US Department of Transportation 18:00 · 19.1 min · 2,197 recorded · 2,136 measured · Source: BTS · US Department of Transportation 19:00 · 19.7 min · 2,240 recorded · 2,185 measured · Source: BTS · US Department of Transportation 20:00 · 22.4 min · 697 recorded · 685 measured · Source: BTS · US Department of Transportation 21:00 · Fewer than 200 measured departures · 175 recorded · 170 measured · Source: BTS · US Department of Transportation 22:00 · Fewer than 200 measured departures · 36 recorded · 35 measured · Source: BTS · US Department of Transportation 23:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
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Recorded flights 6,562 3,281 0
00:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 01:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 02:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 03:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 04:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 05:00 · 1,889 · 1,889 recorded · 1,840 measured · Source: BTS · US Department of Transportation 06:00 · 6,562 · 6,562 recorded · 6,456 measured · Source: BTS · US Department of Transportation 07:00 · 3,209 · 3,209 recorded · 3,170 measured · Source: BTS · US Department of Transportation 08:00 · 1,896 · 1,896 recorded · 1,872 measured · Source: BTS · US Department of Transportation 09:00 · 1,073 · 1,073 recorded · 1,061 measured · Source: BTS · US Department of Transportation 10:00 · 2,072 · 2,072 recorded · 2,045 measured · Source: BTS · US Department of Transportation 11:00 · 2,695 · 2,695 recorded · 2,661 measured · Source: BTS · US Department of Transportation 12:00 · 2,963 · 2,963 recorded · 2,909 measured · Source: BTS · US Department of Transportation 13:00 · 1,834 · 1,834 recorded · 1,804 measured · Source: BTS · US Department of Transportation 14:00 · 1,393 · 1,393 recorded · 1,352 measured · Source: BTS · US Department of Transportation 15:00 · 1,619 · 1,619 recorded · 1,587 measured · Source: BTS · US Department of Transportation 16:00 · 2,067 · 2,067 recorded · 2,026 measured · Source: BTS · US Department of Transportation 17:00 · 3,491 · 3,491 recorded · 3,376 measured · Source: BTS · US Department of Transportation 18:00 · 2,197 · 2,197 recorded · 2,136 measured · Source: BTS · US Department of Transportation 19:00 · 2,240 · 2,240 recorded · 2,185 measured · Source: BTS · US Department of Transportation 20:00 · 697 · 697 recorded · 685 measured · Source: BTS · US Department of Transportation 21:00 · 175 · 175 recorded · 170 measured · Source: BTS · US Department of Transportation 22:00 · 36 · 36 recorded · 35 measured · Source: BTS · US Department of Transportation 23:00 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
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View the figures Departure hour On-time departures Average departure delay With departure time Recorded flights 00:00 No observations — — — 01:00 No observations — — — 02:00 No observations — — — 03:00 No observations — — — 04:00 No observations — — — 05:00 91.9% 7.1 min 1,840 1,889 06:00 90.7% 7.0 min 6,456 6,562 07:00 92.0% 4.1 min 3,170 3,209 08:00 89.3% 6.5 min 1,872 1,896 09:00 87.8% 5.0 min 1,061 1,073 10:00 88.6% 4.2 min 2,045 2,072 11:00 82.6% 10.5 min 2,661 2,695 12:00 78.1% 12.6 min 2,909 2,963 13:00 77.6% 14.4 min 1,804 1,834 14:00 74.9% 18.8 min 1,352 1,393 15:00 72.8% 16.4 min 1,587 1,619 16:00 69.9% 18.2 min 2,026 2,067 17:00 69.1% 23.6 min 3,376 3,491 18:00 70.6% 19.1 min 2,136 2,197 19:00 69.6% 19.7 min 2,185 2,240 20:00 62.9% 22.4 min 685 697 21:00 Fewer than 200 measured departures — 170 175 22:00 Fewer than 200 measured departures — 35 36 23:00 No observations — — —
Day of week On-time departures 100.0 50.0 0.0
Monday · 79.7% · 5,699 recorded · 5,522 measured · Source: BTS · US Department of Transportation Tuesday · 84.5% · 5,177 recorded · 5,100 measured · Source: BTS · US Department of Transportation Wednesday · 85.1% · 5,105 recorded · 5,023 measured · Source: BTS · US Department of Transportation Thursday · 80.2% · 5,498 recorded · 5,396 measured · Source: BTS · US Department of Transportation Friday · 80.4% · 5,575 recorded · 5,485 measured · Source: BTS · US Department of Transportation Saturday · 79.7% · 5,407 recorded · 5,338 measured · Source: BTS · US Department of Transportation Sunday · 77.5% · 5,647 recorded · 5,506 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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Average departure delay 16.2 8.1 0.0
Monday · 13.5 min · 5,699 recorded · 5,522 measured · Source: BTS · US Department of Transportation Tuesday · 9.7 min · 5,177 recorded · 5,100 measured · Source: BTS · US Department of Transportation Wednesday · 8.3 min · 5,105 recorded · 5,023 measured · Source: BTS · US Department of Transportation Thursday · 12.8 min · 5,498 recorded · 5,396 measured · Source: BTS · US Department of Transportation Friday · 12.3 min · 5,575 recorded · 5,485 measured · Source: BTS · US Department of Transportation Saturday · 13.1 min · 5,407 recorded · 5,338 measured · Source: BTS · US Department of Transportation Sunday · 16.2 min · 5,647 recorded · 5,506 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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Recorded flights 5,699 2,850 0
Monday · 5,699 · 5,699 recorded · 5,522 measured · Source: BTS · US Department of Transportation Tuesday · 5,177 · 5,177 recorded · 5,100 measured · Source: BTS · US Department of Transportation Wednesday · 5,105 · 5,105 recorded · 5,023 measured · Source: BTS · US Department of Transportation Thursday · 5,498 · 5,498 recorded · 5,396 measured · Source: BTS · US Department of Transportation Friday · 5,575 · 5,575 recorded · 5,485 measured · Source: BTS · US Department of Transportation Saturday · 5,407 · 5,407 recorded · 5,338 measured · Source: BTS · US Department of Transportation Sunday · 5,647 · 5,647 recorded · 5,506 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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View the figures Day of week On-time departures Average departure delay With departure time Recorded flights Monday 79.7% 13.5 min 5,522 5,699 Tuesday 84.5% 9.7 min 5,100 5,177 Wednesday 85.1% 8.3 min 5,023 5,105 Thursday 80.2% 12.8 min 5,396 5,498 Friday 80.4% 12.3 min 5,485 5,575 Saturday 79.7% 13.1 min 5,338 5,407 Sunday 77.5% 16.2 min 5,506 5,647
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 100.0 50.0 0.0
Jan · 80.0% · 2,750 recorded · 2,624 measured · Source: BTS · US Department of Transportation Feb · 78.5% · 2,777 recorded · 2,692 measured · Source: BTS · US Department of Transportation Mar · 78.9% · 3,392 recorded · 3,318 measured · Source: BTS · US Department of Transportation Apr · 84.6% · 3,421 recorded · 3,392 measured · Source: BTS · US Department of Transportation May · 82.5% · 3,835 recorded · 3,810 measured · Source: BTS · US Department of Transportation Jun · 76.6% · 3,636 recorded · 3,530 measured · Source: BTS · US Department of Transportation Jul · 72.6% · 1,963 recorded · 1,879 measured · Source: BTS · US Department of Transportation Aug · 78.4% · 1,886 recorded · 1,867 measured · Source: BTS · US Department of Transportation Sep · 87.7% · 3,662 recorded · 3,648 measured · Source: BTS · US Department of Transportation Oct · 85.7% · 3,902 recorded · 3,871 measured · Source: BTS · US Department of Transportation Nov · 84.5% · 3,500 recorded · 3,455 measured · Source: BTS · US Department of Transportation Dec · 74.0% · 3,384 recorded · 3,284 measured · Source: BTS · US Department of Transportation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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Average departure delay 22.9 11.4 0.0
Jan · 14.3 min · 2,750 recorded · 2,624 measured · Source: BTS · US Department of Transportation Feb · 17.9 min · 2,777 recorded · 2,692 measured · Source: BTS · US Department of Transportation Mar · 13.7 min · 3,392 recorded · 3,318 measured · Source: BTS · US Department of Transportation Apr · 7.0 min · 3,421 recorded · 3,392 measured · Source: BTS · US Department of Transportation May · 9.0 min · 3,835 recorded · 3,810 measured · Source: BTS · US Department of Transportation Jun · 15.9 min · 3,636 recorded · 3,530 measured · Source: BTS · US Department of Transportation Jul · 22.9 min · 1,963 recorded · 1,879 measured · Source: BTS · US Department of Transportation Aug · 16.8 min · 1,886 recorded · 1,867 measured · Source: BTS · US Department of Transportation Sep · 5.6 min · 3,662 recorded · 3,648 measured · Source: BTS · US Department of Transportation Oct · 6.3 min · 3,902 recorded · 3,871 measured · Source: BTS · US Department of Transportation Nov · 9.0 min · 3,500 recorded · 3,455 measured · Source: BTS · US Department of Transportation Dec · 19.7 min · 3,384 recorded · 3,284 measured · Source: BTS · US Department of Transportation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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Recorded flights 3,902 1,951 0
Jan · 2,750 · 2,750 recorded · 2,624 measured · Source: BTS · US Department of Transportation Feb · 2,777 · 2,777 recorded · 2,692 measured · Source: BTS · US Department of Transportation Mar · 3,392 · 3,392 recorded · 3,318 measured · Source: BTS · US Department of Transportation Apr · 3,421 · 3,421 recorded · 3,392 measured · Source: BTS · US Department of Transportation May · 3,835 · 3,835 recorded · 3,810 measured · Source: BTS · US Department of Transportation Jun · 3,636 · 3,636 recorded · 3,530 measured · Source: BTS · US Department of Transportation Jul · 1,963 · 1,963 recorded · 1,879 measured · Source: BTS · US Department of Transportation Aug · 1,886 · 1,886 recorded · 1,867 measured · Source: BTS · US Department of Transportation Sep · 3,662 · 3,662 recorded · 3,648 measured · Source: BTS · US Department of Transportation Oct · 3,902 · 3,902 recorded · 3,871 measured · Source: BTS · US Department of Transportation Nov · 3,500 · 3,500 recorded · 3,455 measured · Source: BTS · US Department of Transportation Dec · 3,384 · 3,384 recorded · 3,284 measured · Source: BTS · US Department of Transportation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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View the figures Month of year On-time departures Average departure delay With departure time Recorded flights Jan 80.0% 14.3 min 2,624 2,750 Feb 78.5% 17.9 min 2,692 2,777 Mar 78.9% 13.7 min 3,318 3,392 Apr 84.6% 7.0 min 3,392 3,421 May 82.5% 9.0 min 3,810 3,835 Jun 76.6% 15.9 min 3,530 3,636 Jul 72.6% 22.9 min 1,879 1,963 Aug 78.4% 16.8 min 1,867 1,886 Sep 87.7% 5.6 min 3,648 3,662 Oct 85.7% 6.3 min 3,871 3,902 Nov 84.5% 9.0 min 3,455 3,500 Dec 74.0% 19.7 min 3,284 3,384
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 79.4% 30,241 Delayed >15 min 18.7% 7,129 Cancelled 1.9% 738 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 punctuality and average delay.
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