Countries › United States › Santa Rosa › STS Santa Rosa Charles M. Schulz Sonoma County (STS) STS / KSTS
88,331
Charles M. Schulz Sonoma County Airport handled 88,331 passengers in May 2026, up 26.1% 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 (274 periods).
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Domestic / International May 2026 Domestic 100.0% 88,328 International 0.0% 3 Against 2019 +128.1% same month, before the pandemic
International share 0% of passengers in May 2026
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 88,331 +26.1% US Bureau of Transportation Statistics Open this month → April 2026 79,265 +19.8% US Bureau of Transportation Statistics Open this month → March 2026 62,936 −2.4% US Bureau of Transportation Statistics Open this month → February 2026 47,205 −4.0% US Bureau of Transportation Statistics Open this month → January 2026 47,924 −8.5% US Bureau of Transportation Statistics Open this month → December 2025 56,807 −27.0% US Bureau of Transportation Statistics Open this month → November 2025 63,344 −16.9% US Bureau of Transportation Statistics Open this month → October 2025 66,907 −12.9% US Bureau of Transportation Statistics Open this month → September 2025 63,500 −6.6% US Bureau of Transportation Statistics Open this month → August 2025 70,869 −3.0% US Bureau of Transportation Statistics Open this month → July 2025 75,693 +2.1% US Bureau of Transportation Statistics Open this month → June 2025 73,247 +1.2% US Bureau of Transportation Statistics Open this month → May 2025 70,069 +5.8% US Bureau of Transportation Statistics Open this month → April 2025 66,164 +18.6% US Bureau of Transportation Statistics Open this month → March 2025 64,462 +31.7% US Bureau of Transportation Statistics Open this month → February 2025 49,176 +31.3% US Bureau of Transportation Statistics Open this month → January 2025 52,360 +37.1% US Bureau of Transportation Statistics Open this month → December 2024 77,780 +63.0% US Bureau of Transportation Statistics Open this month → November 2024 76,195 +29.2% US Bureau of Transportation Statistics Open this month → October 2024 76,786 +24.1% US Bureau of Transportation Statistics Open this month → September 2024 68,007 +10.1% US Bureau of Transportation Statistics Open this month → August 2024 73,060 +28.1% US Bureau of Transportation Statistics July 2024 74,136 +34.3% US Bureau of Transportation Statistics June 2024 72,379 +30.6% 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 06:00–07:00 0.2min · 600 recorded · 564 measured
Gap to highest-delay hour 18.0min 06:00 ↔ 20:00
Recorded flights 9,016 Charles M. Schulz Sonoma County 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 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 06:00 · 94.7% · 600 recorded · 564 measured · Source: BTS · US Department of Transportation 07:00 · 91.1% · 948 recorded · 911 measured · Source: BTS · US Department of Transportation 08:00 · Fewer than 200 measured departures · 172 recorded · 169 measured · Source: BTS · US Department of Transportation 09:00 · 78.1% · 327 recorded · 324 measured · Source: BTS · US Department of Transportation 10:00 · 79.1% · 587 recorded · 583 measured · Source: BTS · US Department of Transportation 11:00 · 82.7% · 668 recorded · 666 measured · Source: BTS · US Department of Transportation 12:00 · 77.3% · 984 recorded · 983 measured · Source: BTS · US Department of Transportation 13:00 · 78.3% · 443 recorded · 442 measured · Source: BTS · US Department of Transportation 14:00 · 77.0% · 990 recorded · 985 measured · Source: BTS · US Department of Transportation 15:00 · 78.2% · 454 recorded · 450 measured · Source: BTS · US Department of Transportation 16:00 · 80.3% · 947 recorded · 945 measured · Source: BTS · US Department of Transportation 17:00 · 77.8% · 275 recorded · 275 measured · Source: BTS · US Department of Transportation 18:00 · 80.0% · 678 recorded · 669 measured · Source: BTS · US Department of Transportation 19:00 · 76.0% · 696 recorded · 686 measured · Source: BTS · US Department of Transportation 20:00 · 65.9% · 227 recorded · 223 measured · Source: BTS · US Department of Transportation 21:00 · Fewer than 200 measured departures · 20 recorded · 19 measured · Source: BTS · US Department of Transportation 22:00 · No observations · 0 recorded · 0 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 18.2 9.1 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 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 06:00 · 0.2 min · 600 recorded · 564 measured · Source: BTS · US Department of Transportation 07:00 · 3.9 min · 948 recorded · 911 measured · Source: BTS · US Department of Transportation 08:00 · Fewer than 200 measured departures · 172 recorded · 169 measured · Source: BTS · US Department of Transportation 09:00 · 17.3 min · 327 recorded · 324 measured · Source: BTS · US Department of Transportation 10:00 · 11.3 min · 587 recorded · 583 measured · Source: BTS · US Department of Transportation 11:00 · 10.2 min · 668 recorded · 666 measured · Source: BTS · US Department of Transportation 12:00 · 18.0 min · 984 recorded · 983 measured · Source: BTS · US Department of Transportation 13:00 · 15.3 min · 443 recorded · 442 measured · Source: BTS · US Department of Transportation 14:00 · 11.2 min · 990 recorded · 985 measured · Source: BTS · US Department of Transportation 15:00 · 11.2 min · 454 recorded · 450 measured · Source: BTS · US Department of Transportation 16:00 · 8.4 min · 947 recorded · 945 measured · Source: BTS · US Department of Transportation 17:00 · 11.3 min · 275 recorded · 275 measured · Source: BTS · US Department of Transportation 18:00 · 10.2 min · 678 recorded · 669 measured · Source: BTS · US Department of Transportation 19:00 · 11.7 min · 696 recorded · 686 measured · Source: BTS · US Department of Transportation 20:00 · 18.2 min · 227 recorded · 223 measured · Source: BTS · US Department of Transportation 21:00 · Fewer than 200 measured departures · 20 recorded · 19 measured · Source: BTS · US Department of Transportation 22:00 · No observations · 0 recorded · 0 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 990 495 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 · No observations · 0 recorded · 0 measured · Source: BTS · US Department of Transportation 06:00 · 600 · 600 recorded · 564 measured · Source: BTS · US Department of Transportation 07:00 · 948 · 948 recorded · 911 measured · Source: BTS · US Department of Transportation 08:00 · 172 · 172 recorded · 169 measured · Source: BTS · US Department of Transportation 09:00 · 327 · 327 recorded · 324 measured · Source: BTS · US Department of Transportation 10:00 · 587 · 587 recorded · 583 measured · Source: BTS · US Department of Transportation 11:00 · 668 · 668 recorded · 666 measured · Source: BTS · US Department of Transportation 12:00 · 984 · 984 recorded · 983 measured · Source: BTS · US Department of Transportation 13:00 · 443 · 443 recorded · 442 measured · Source: BTS · US Department of Transportation 14:00 · 990 · 990 recorded · 985 measured · Source: BTS · US Department of Transportation 15:00 · 454 · 454 recorded · 450 measured · Source: BTS · US Department of Transportation 16:00 · 947 · 947 recorded · 945 measured · Source: BTS · US Department of Transportation 17:00 · 275 · 275 recorded · 275 measured · Source: BTS · US Department of Transportation 18:00 · 678 · 678 recorded · 669 measured · Source: BTS · US Department of Transportation 19:00 · 696 · 696 recorded · 686 measured · Source: BTS · US Department of Transportation 20:00 · 227 · 227 recorded · 223 measured · Source: BTS · US Department of Transportation 21:00 · 20 · 20 recorded · 19 measured · Source: BTS · US Department of Transportation 22:00 · No observations · 0 recorded · 0 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 No observations — — — 06:00 94.7% 0.2 min 564 600 07:00 91.1% 3.9 min 911 948 08:00 Fewer than 200 measured departures — 169 172 09:00 78.1% 17.3 min 324 327 10:00 79.1% 11.3 min 583 587 11:00 82.7% 10.2 min 666 668 12:00 77.3% 18.0 min 983 984 13:00 78.3% 15.3 min 442 443 14:00 77.0% 11.2 min 985 990 15:00 78.2% 11.2 min 450 454 16:00 80.3% 8.4 min 945 947 17:00 77.8% 11.3 min 275 275 18:00 80.0% 10.2 min 669 678 19:00 76.0% 11.7 min 686 696 20:00 65.9% 18.2 min 223 227 21:00 Fewer than 200 measured departures — 19 20 22:00 No observations — — — 23:00 No observations — — —
Day of week On-time departures 100.0 50.0 0.0
Monday · 78.1% · 1,405 recorded · 1,385 measured · Source: BTS · US Department of Transportation Tuesday · 84.7% · 1,142 recorded · 1,116 measured · Source: BTS · US Department of Transportation Wednesday · 84.9% · 1,134 recorded · 1,125 measured · Source: BTS · US Department of Transportation Thursday · 80.6% · 1,367 recorded · 1,353 measured · Source: BTS · US Department of Transportation Friday · 76.4% · 1,385 recorded · 1,367 measured · Source: BTS · US Department of Transportation Saturday · 84.6% · 1,186 recorded · 1,165 measured · Source: BTS · US Department of Transportation Sunday · 78.6% · 1,397 recorded · 1,383 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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Average departure delay 14.2 7.1 0.0
Monday · 11.9 min · 1,405 recorded · 1,385 measured · Source: BTS · US Department of Transportation Tuesday · 7.4 min · 1,142 recorded · 1,116 measured · Source: BTS · US Department of Transportation Wednesday · 4.5 min · 1,134 recorded · 1,125 measured · Source: BTS · US Department of Transportation Thursday · 12.0 min · 1,367 recorded · 1,353 measured · Source: BTS · US Department of Transportation Friday · 14.2 min · 1,385 recorded · 1,367 measured · Source: BTS · US Department of Transportation Saturday · 8.0 min · 1,186 recorded · 1,165 measured · Source: BTS · US Department of Transportation Sunday · 14.0 min · 1,397 recorded · 1,383 measured · Source: BTS · US Department of Transportation Mon Tue Wed Thu Fri Sat Sun
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Recorded flights 1,405 703 0
Monday · 1,405 · 1,405 recorded · 1,385 measured · Source: BTS · US Department of Transportation Tuesday · 1,142 · 1,142 recorded · 1,116 measured · Source: BTS · US Department of Transportation Wednesday · 1,134 · 1,134 recorded · 1,125 measured · Source: BTS · US Department of Transportation Thursday · 1,367 · 1,367 recorded · 1,353 measured · Source: BTS · US Department of Transportation Friday · 1,385 · 1,385 recorded · 1,367 measured · Source: BTS · US Department of Transportation Saturday · 1,186 · 1,186 recorded · 1,165 measured · Source: BTS · US Department of Transportation Sunday · 1,397 · 1,397 recorded · 1,383 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 78.1% 11.9 min 1,385 1,405 Tuesday 84.7% 7.4 min 1,116 1,142 Wednesday 84.9% 4.5 min 1,125 1,134 Thursday 80.6% 12.0 min 1,353 1,367 Friday 76.4% 14.2 min 1,367 1,385 Saturday 84.6% 8.0 min 1,165 1,186 Sunday 78.6% 14.0 min 1,383 1,397
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 · 84.8% · 643 recorded · 618 measured · Source: BTS · US Department of Transportation Feb · 83.6% · 573 recorded · 560 measured · Source: BTS · US Department of Transportation Mar · 85.7% · 762 recorded · 760 measured · Source: BTS · US Department of Transportation Apr · 84.4% · 921 recorded · 920 measured · Source: BTS · US Department of Transportation May · 82.3% · 1,044 recorded · 1,042 measured · Source: BTS · US Department of Transportation Jun · 78.3% · 999 recorded · 994 measured · Source: BTS · US Department of Transportation Jul · 72.7% · 385 recorded · 384 measured · Source: BTS · US Department of Transportation Aug · 80.6% · 435 recorded · 433 measured · Source: BTS · US Department of Transportation Sep · 82.8% · 829 recorded · 825 measured · Source: BTS · US Department of Transportation Oct · 83.4% · 752 recorded · 746 measured · Source: BTS · US Department of Transportation Nov · 78.0% · 880 recorded · 859 measured · Source: BTS · US Department of Transportation Dec · 70.8% · 793 recorded · 753 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 24.2 12.1 0.0
Jan · 6.8 min · 643 recorded · 618 measured · Source: BTS · US Department of Transportation Feb · 9.1 min · 573 recorded · 560 measured · Source: BTS · US Department of Transportation Mar · 6.4 min · 762 recorded · 760 measured · Source: BTS · US Department of Transportation Apr · 6.6 min · 921 recorded · 920 measured · Source: BTS · US Department of Transportation May · 8.4 min · 1,044 recorded · 1,042 measured · Source: BTS · US Department of Transportation Jun · 12.9 min · 999 recorded · 994 measured · Source: BTS · US Department of Transportation Jul · 24.2 min · 385 recorded · 384 measured · Source: BTS · US Department of Transportation Aug · 8.4 min · 435 recorded · 433 measured · Source: BTS · US Department of Transportation Sep · 9.3 min · 829 recorded · 825 measured · Source: BTS · US Department of Transportation Oct · 9.5 min · 752 recorded · 746 measured · Source: BTS · US Department of Transportation Nov · 10.8 min · 880 recorded · 859 measured · Source: BTS · US Department of Transportation Dec · 20.6 min · 793 recorded · 753 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 1,044 522 0
Jan · 643 · 643 recorded · 618 measured · Source: BTS · US Department of Transportation Feb · 573 · 573 recorded · 560 measured · Source: BTS · US Department of Transportation Mar · 762 · 762 recorded · 760 measured · Source: BTS · US Department of Transportation Apr · 921 · 921 recorded · 920 measured · Source: BTS · US Department of Transportation May · 1,044 · 1,044 recorded · 1,042 measured · Source: BTS · US Department of Transportation Jun · 999 · 999 recorded · 994 measured · Source: BTS · US Department of Transportation Jul · 385 · 385 recorded · 384 measured · Source: BTS · US Department of Transportation Aug · 435 · 435 recorded · 433 measured · Source: BTS · US Department of Transportation Sep · 829 · 829 recorded · 825 measured · Source: BTS · US Department of Transportation Oct · 752 · 752 recorded · 746 measured · Source: BTS · US Department of Transportation Nov · 880 · 880 recorded · 859 measured · Source: BTS · US Department of Transportation Dec · 793 · 793 recorded · 753 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 84.8% 6.8 min 618 643 Feb 83.6% 9.1 min 560 573 Mar 85.7% 6.4 min 760 762 Apr 84.4% 6.6 min 920 921 May 82.3% 8.4 min 1,042 1,044 Jun 78.3% 12.9 min 994 999 Jul 72.7% 24.2 min 384 385 Aug 80.6% 8.4 min 433 435 Sep 82.8% 9.3 min 825 829 Oct 83.4% 9.5 min 746 752 Nov 78.0% 10.8 min 859 880 Dec 70.8% 20.6 min 753 793
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 79.8% 7,191 Delayed >15 min 18.9% 1,703 Cancelled 1.4% 122 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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