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819 km · Domestic

San Diego (SAN) – Charles M. Schulz Sonoma County (STS)

In July 2026, 214 flights operated between San Diego and Charles M. Schulz Sonoma County (both directions), and 72.0% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January97100▲ 3.1%
February8187▲ 7.4%
March107137▲ 28.0%
April119226▲ 89.9%
May124249▲ 100.8%
June118229▲ 94.1%
July122214▲ 75.4%
August142––
September157––
October164–in progress
November158––
December95––
Year to date (Jan–Jul)7681,242▲ 61.7%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January87.6%84.0%▼ 4.1%
February80.2%75.9%▼ 5.4%
March83.2%84.7%▲ 1.8%
April75.6%81.4%▲ 7.7%
May83.9%77.5%▼ 7.6%
June76.3%78.2%▲ 2.5%
July84.4%72.0%▼ 14.7%
August81.7%––
September80.3%––
October84.1%–in progress
November81.6%––
December65.3%––
Year-to-date average (Jan–Jul)81.6%79.1%▼ 3.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January98▼ 11.1%
February71▼ 85.7%
March110.0%
April10▼ 100.0%
May01–
June13▲ 200.0%
July012–
August0––
September5––
October8–in progress
November17––
December9––
Year to date (Jan–Jul)1926▲ 36.8%

Airlines on this route

  1. SkyWest Airlines 88.7%
  2. Southwest Airlines 11.3%

Oct 1, 2024 – Jul 31, 2026

By direction

SAN → STS

Scheduled flights
1,606
Flights operated
1,555
Cancelled
51 · 3.2%
On-time departures
75.4%

STS → SAN

Scheduled flights
1,600
Flights operated
1,555
Cancelled
45 · 2.8%
On-time departures
83.0%

SAN → STS and STS → SAN counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 2,843 88.7% 80.8% 92
Southwest Airlines WN 363 11.3% 66.9% 4

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

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.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

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

Lowest average delay06:00–07:001.4min · 574 recorded · 540 measured
Gap to highest-delay hour11.7min06:00 ↔ 21:00
Recorded flights3,206SAN–STS

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 94.1% · 574 recorded · 540 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 163 recorded · 162 measured · Source: the US BTS 08:00 · 83.7% · 417 recorded · 417 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 191 recorded · 187 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 97 recorded · 97 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 93 recorded · 92 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 175 recorded · 174 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 6 recorded · 6 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 117 recorded · 117 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 73 recorded · 72 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 97 recorded · 97 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 113 recorded · 113 measured · Source: the US BTS 18:00 · 79.9% · 220 recorded · 214 measured · Source: the US BTS 19:00 · 78.9% · 211 recorded · 208 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 169 recorded · 156 measured · Source: the US BTS 21:00 · 68.3% · 486 recorded · 454 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 4 recorded · 4 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: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 1.4 min · 574 recorded · 540 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 163 recorded · 162 measured · Source: the US BTS 08:00 · 7.4 min · 417 recorded · 417 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 191 recorded · 187 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 97 recorded · 97 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 93 recorded · 92 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 175 recorded · 174 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 6 recorded · 6 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 117 recorded · 117 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 73 recorded · 72 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 97 recorded · 97 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 113 recorded · 113 measured · Source: the US BTS 18:00 · 9.7 min · 220 recorded · 214 measured · Source: the US BTS 19:00 · 9.8 min · 211 recorded · 208 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 169 recorded · 156 measured · Source: the US BTS 21:00 · 13.1 min · 486 recorded · 454 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 4 recorded · 4 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: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 574 · 574 recorded · 540 measured · Source: the US BTS 07:00 · 163 · 163 recorded · 162 measured · Source: the US BTS 08:00 · 417 · 417 recorded · 417 measured · Source: the US BTS 09:00 · 191 · 191 recorded · 187 measured · Source: the US BTS 10:00 · 97 · 97 recorded · 97 measured · Source: the US BTS 11:00 · 93 · 93 recorded · 92 measured · Source: the US BTS 12:00 · 175 · 175 recorded · 174 measured · Source: the US BTS 13:00 · 6 · 6 recorded · 6 measured · Source: the US BTS 14:00 · 117 · 117 recorded · 117 measured · Source: the US BTS 15:00 · 73 · 73 recorded · 72 measured · Source: the US BTS 16:00 · 97 · 97 recorded · 97 measured · Source: the US BTS 17:00 · 113 · 113 recorded · 113 measured · Source: the US BTS 18:00 · 220 · 220 recorded · 214 measured · Source: the US BTS 19:00 · 211 · 211 recorded · 208 measured · Source: the US BTS 20:00 · 169 · 169 recorded · 156 measured · Source: the US BTS 21:00 · 486 · 486 recorded · 454 measured · Source: the US BTS 22:00 · 4 · 4 recorded · 4 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:0094.1%1.4 min540574
07:00Fewer than 200 measured departures—162163
08:0083.7%7.4 min417417
09:00Fewer than 200 measured departures—187191
10:00Fewer than 200 measured departures—9797
11:00Fewer than 200 measured departures—9293
12:00Fewer than 200 measured departures—174175
13:00Fewer than 200 measured departures—66
14:00Fewer than 200 measured departures—117117
15:00Fewer than 200 measured departures—7273
16:00Fewer than 200 measured departures—9797
17:00Fewer than 200 measured departures—113113
18:0079.9%9.7 min214220
19:0078.9%9.8 min208211
20:00Fewer than 200 measured departures—156169
21:0068.3%13.1 min454486
22:00Fewer than 200 measured departures—44
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 78.9% · 510 recorded · 492 measured · Source: the US BTS Tuesday · 84.6% · 387 recorded · 371 measured · Source: the US BTS Wednesday · 83.5% · 403 recorded · 395 measured · Source: the US BTS Thursday · 79.8% · 500 recorded · 485 measured · Source: the US BTS Friday · 71.5% · 512 recorded · 492 measured · Source: the US BTS Saturday · 81.6% · 394 recorded · 386 measured · Source: the US BTS Sunday · 77.1% · 500 recorded · 489 measured · Source: the US BTS

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

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 8.5 min · 510 recorded · 492 measured · Source: the US BTS Tuesday · 5.8 min · 387 recorded · 371 measured · Source: the US BTS Wednesday · 5.3 min · 403 recorded · 395 measured · Source: the US BTS Thursday · 10.1 min · 500 recorded · 485 measured · Source: the US BTS Friday · 15.9 min · 512 recorded · 492 measured · Source: the US BTS Saturday · 9.6 min · 394 recorded · 386 measured · Source: the US BTS Sunday · 9.7 min · 500 recorded · 489 measured · Source: the US BTS

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

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 510 · 510 recorded · 492 measured · Source: the US BTS Tuesday · 387 · 387 recorded · 371 measured · Source: the US BTS Wednesday · 403 · 403 recorded · 395 measured · Source: the US BTS Thursday · 500 · 500 recorded · 485 measured · Source: the US BTS Friday · 512 · 512 recorded · 492 measured · Source: the US BTS Saturday · 394 · 394 recorded · 386 measured · Source: the US BTS Sunday · 500 · 500 recorded · 489 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday78.9%8.5 min492510
Tuesday84.6%5.8 min371387
Wednesday83.5%5.3 min395403
Thursday79.8%10.1 min485500
Friday71.5%15.9 min492512
Saturday81.6%9.6 min386394
Sunday77.1%9.7 min489500

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: only airlines that report on-time data to the US DOT
Jan · Fewer than 200 measured departures · 214 recorded · 197 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 176 recorded · 168 measured · Source: the US BTS Mar · 84.0% · 246 recorded · 244 measured · Source: the US BTS Apr · 79.4% · 346 recorded · 345 measured · Source: the US BTS May · 79.6% · 374 recorded · 373 measured · Source: the US BTS Jun · 77.5% · 351 recorded · 347 measured · Source: the US BTS Jul · 76.5% · 348 recorded · 336 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 142 recorded · 142 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 162 recorded · 157 measured · Source: the US BTS Oct · 84.8% · 274 recorded · 263 measured · Source: the US BTS Nov · 76.6% · 333 recorded · 312 measured · Source: the US BTS Dec · 69.5% · 240 recorded · 226 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · Fewer than 200 measured departures · 214 recorded · 197 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 176 recorded · 168 measured · Source: the US BTS Mar · 4.5 min · 246 recorded · 244 measured · Source: the US BTS Apr · 8.9 min · 346 recorded · 345 measured · Source: the US BTS May · 9.0 min · 374 recorded · 373 measured · Source: the US BTS Jun · 10.3 min · 351 recorded · 347 measured · Source: the US BTS Jul · 12.2 min · 348 recorded · 336 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 142 recorded · 142 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 162 recorded · 157 measured · Source: the US BTS Oct · 4.2 min · 274 recorded · 263 measured · Source: the US BTS Nov · 12.3 min · 333 recorded · 312 measured · Source: the US BTS Dec · 17.3 min · 240 recorded · 226 measured · Source: the US BTS

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

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 214 · 214 recorded · 197 measured · Source: the US BTS Feb · 176 · 176 recorded · 168 measured · Source: the US BTS Mar · 246 · 246 recorded · 244 measured · Source: the US BTS Apr · 346 · 346 recorded · 345 measured · Source: the US BTS May · 374 · 374 recorded · 373 measured · Source: the US BTS Jun · 351 · 351 recorded · 347 measured · Source: the US BTS Jul · 348 · 348 recorded · 336 measured · Source: the US BTS Aug · 142 · 142 recorded · 142 measured · Source: the US BTS Sep · 162 · 162 recorded · 157 measured · Source: the US BTS Oct · 274 · 274 recorded · 263 measured · Source: the US BTS Nov · 333 · 333 recorded · 312 measured · Source: the US BTS Dec · 240 · 240 recorded · 226 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—197214
FebFewer than 200 measured departures—168176
Mar84.0%4.5 min244246
Apr79.4%8.9 min345346
May79.6%9.0 min373374
Jun77.5%10.3 min347351
Jul76.5%12.2 min336348
AugFewer than 200 measured departures—142142
SepFewer than 200 measured departures—157162
Oct84.8%4.2 min263274
Nov76.6%12.3 min312333
Dec69.5%17.3 min226240

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 76.8% 2,463
  • Delayed >15 min 20.2% 647
  • Cancelled 3.0% 96
  • 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.

Flight numbers on this route

27
27 of 27
Flight numbersBy direction DeparturesOn time
OO3302 SAN → STS 445 72.7%
OO3409 SAN → STS 410 77.8%
OO3315 STS → SAN 272 90.8%
OO3445 SAN → STS 227 84.8%
OO3360 STS → SAN 215 94.1%
OO3489 STS → SAN 205 80.8%
OO3047 STS → SAN 172 77.7%
OO3001 STS → SAN 96 90.6%
OO3409 STS → SAN 93 67.7%
OO3367 SAN → STS 83 65.3%
OO3254 STS → SAN 62 79.7%
WN2019 SAN → STS 58 46.6%
WN4191 SAN → STS 58 41.8%
WN4140 STS → SAN 57 93.0%
WN4813 STS → SAN 57 89.3%
OO3233 SAN → STS 52 94.2%
OO3314 SAN → STS 45 84.4%
OO3322 STS → SAN 45 93.2%
OO3492 STS → SAN 42 80.0%
OO3103 STS → SAN 35 94.3%
WN3994 STS → SAN 34 14.7%
WN4773 SAN → STS 34 91.2%
OO3205 STS → SAN 33 90.6%
OO3316 SAN → STS 33 80.0%
WN4525 STS → SAN 32 62.5%
WN388 SAN → STS 31 93.6%
OO3046 SAN → STS 30 86.7%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 214 +75.4% 12 72.0%
June 2026 229 +94.1% 3 78.2%
May 2026 249 +100.8% 1 77.5%
April 2026 226 +89.9% 0 81.4%
March 2026 137 +28.0% 1 84.7%
February 2026 87 +7.4% 1 75.9%
January 2026 100 +3.1% 8 84.0%
December 2025 95 −27.5% 9 65.3%
November 2025 158 +2.6% 17 81.6%
October 2025 164 +65.7% 8 84.1%
September 2025 157 5 80.3%
August 2025 142 0 81.7%
July 2025 122 0 84.4%
June 2025 118 1 76.3%
May 2025 124 0 83.9%
April 2025 119 1 75.6%
March 2025 107 1 83.2%
February 2025 81 7 80.2%
January 2025 97 9 87.6%
December 2024 131 5 72.5%
November 2024 154 4 71.4%
October 2024 99 3 85.9%

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