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787 km · Domestic

Portland (PDX) – Charles M. Schulz Sonoma County (STS)

In July 2026, 119 flights operated between Portland and Charles M. Schulz Sonoma County (both directions), and 94.1% 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
January1089▲ 790.0%
February3178▲ 151.6%
March60107▲ 78.3%
April77100▲ 29.9%
May124140▲ 12.9%
June82124▲ 51.2%
July62119▲ 91.9%
August86––
September120––
October72–in progress
November116––
December85––
Year to date (Jan–Jul)446757▲ 69.7%

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
January60.0%82.0%▲ 36.7%
February80.6%85.9%▲ 6.6%
March83.3%90.7%▲ 8.9%
April79.2%88.0%▲ 11.1%
May82.3%89.3%▲ 8.5%
June76.8%91.1%▲ 18.6%
July88.7%94.1%▲ 6.1%
August88.4%––
September95.0%––
October88.9%–in progress
November82.8%––
December64.7%––
Year-to-date average (Jan–Jul)78.7%88.7%▲ 12.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January07–
February110.0%
March00–
April00–
May00–
June00–
July01–
August0––
September0––
October0–in progress
November1––
December3––
Year to date (Jan–Jul)19▲ 800.0%

Airlines on this route

  1. SkyWest Airlines 97.2%
  2. Alaska Airlines 2.8%

Oct 1, 2024 – Jul 31, 2026

By direction

PDX → STS

Scheduled flights
939
Flights operated
936
Cancelled
3 · 0.3%
On-time departures
86.0%

STS → PDX

Scheduled flights
907
Flights operated
895
Cancelled
12 · 1.3%
On-time departures
84.9%

PDX → STS and STS → PDX counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 1,794 97.2% 85.5% 7
Alaska Airlines AS 52 2.8% 86.4% 8

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 delay17:00–18:002.8min · 238 recorded · 238 measured
Gap to highest-delay hour5.7min17:00 ↔ 18:00
Recorded flights1,846PDX–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 · Fewer than 200 measured departures · 27 recorded · 20 measured · Source: the US BTS 07:00 · 85.9% · 365 recorded · 362 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 199 recorded · 199 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 116 recorded · 116 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 177 recorded · 177 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 127 recorded · 127 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 67 recorded · 67 measured · Source: the US BTS 17:00 · 83.2% · 238 recorded · 238 measured · Source: the US BTS 18:00 · 83.3% · 247 recorded · 245 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 158 recorded · 155 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 53 recorded · 53 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 67 recorded · 67 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · Fewer than 200 measured departures · 27 recorded · 20 measured · Source: the US BTS 07:00 · 7.8 min · 365 recorded · 362 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 199 recorded · 199 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 116 recorded · 116 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 177 recorded · 177 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 127 recorded · 127 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 67 recorded · 67 measured · Source: the US BTS 17:00 · 2.8 min · 238 recorded · 238 measured · Source: the US BTS 18:00 · 8.5 min · 247 recorded · 245 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 158 recorded · 155 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 53 recorded · 53 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 67 recorded · 67 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · 27 · 27 recorded · 20 measured · Source: the US BTS 07:00 · 365 · 365 recorded · 362 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 11:00 · 199 · 199 recorded · 199 measured · Source: the US BTS 12:00 · 116 · 116 recorded · 116 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · 177 · 177 recorded · 177 measured · Source: the US BTS 15:00 · 127 · 127 recorded · 127 measured · Source: the US BTS 16:00 · 67 · 67 recorded · 67 measured · Source: the US BTS 17:00 · 238 · 238 recorded · 238 measured · Source: the US BTS 18:00 · 247 · 247 recorded · 245 measured · Source: the US BTS 19:00 · 158 · 158 recorded · 155 measured · Source: the US BTS 20:00 · 53 · 53 recorded · 53 measured · Source: the US BTS 21:00 · 67 · 67 recorded · 67 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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———
06:00Fewer than 200 measured departures—2027
07:0085.9%7.8 min362365
08:00No observations———
09:00No observations———
10:00Fewer than 200 measured departures—55
11:00Fewer than 200 measured departures—199199
12:00Fewer than 200 measured departures—116116
13:00No observations———
14:00Fewer than 200 measured departures—177177
15:00Fewer than 200 measured departures—127127
16:00Fewer than 200 measured departures—6767
17:0083.2%2.8 min238238
18:0083.3%8.5 min245247
19:00Fewer than 200 measured departures—155158
20:00Fewer than 200 measured departures—5353
21:00Fewer than 200 measured departures—6767
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 83.9% · 281 recorded · 280 measured · Source: the US BTS Tuesday · 87.1% · 249 recorded · 248 measured · Source: the US BTS Wednesday · 91.2% · 251 recorded · 250 measured · Source: the US BTS Thursday · 84.9% · 280 recorded · 278 measured · Source: the US BTS Friday · 84.8% · 285 recorded · 282 measured · Source: the US BTS Saturday · 85.3% · 224 recorded · 218 measured · Source: the US BTS Sunday · 81.8% · 276 recorded · 275 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 · 7.9 min · 281 recorded · 280 measured · Source: the US BTS Tuesday · 3.8 min · 249 recorded · 248 measured · Source: the US BTS Wednesday · 0.5 min · 251 recorded · 250 measured · Source: the US BTS Thursday · 3.5 min · 280 recorded · 278 measured · Source: the US BTS Friday · 6.6 min · 285 recorded · 282 measured · Source: the US BTS Saturday · 4.7 min · 224 recorded · 218 measured · Source: the US BTS Sunday · 9.0 min · 276 recorded · 275 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 · 281 · 281 recorded · 280 measured · Source: the US BTS Tuesday · 249 · 249 recorded · 248 measured · Source: the US BTS Wednesday · 251 · 251 recorded · 250 measured · Source: the US BTS Thursday · 280 · 280 recorded · 278 measured · Source: the US BTS Friday · 285 · 285 recorded · 282 measured · Source: the US BTS Saturday · 224 · 224 recorded · 218 measured · Source: the US BTS Sunday · 276 · 276 recorded · 275 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday83.9%7.9 min280281
Tuesday87.1%3.8 min248249
Wednesday91.2%0.5 min250251
Thursday84.9%3.5 min278280
Friday84.8%6.6 min282285
Saturday85.3%4.7 min218224
Sunday81.8%9.0 min275276

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 · 106 recorded · 99 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 111 recorded · 109 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 167 recorded · 167 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 177 recorded · 177 measured · Source: the US BTS May · 86.0% · 264 recorded · 264 measured · Source: the US BTS Jun · 85.4% · 206 recorded · 206 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 182 recorded · 181 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 86 recorded · 86 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 112 recorded · 112 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 169 recorded · 167 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 146 recorded · 143 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
Jan · Fewer than 200 measured departures · 106 recorded · 99 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 111 recorded · 109 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 167 recorded · 167 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 177 recorded · 177 measured · Source: the US BTS May · 5.4 min · 264 recorded · 264 measured · Source: the US BTS Jun · 4.0 min · 206 recorded · 206 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 182 recorded · 181 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 86 recorded · 86 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 120 recorded · 120 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 112 recorded · 112 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 169 recorded · 167 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 146 recorded · 143 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 · 106 · 106 recorded · 99 measured · Source: the US BTS Feb · 111 · 111 recorded · 109 measured · Source: the US BTS Mar · 167 · 167 recorded · 167 measured · Source: the US BTS Apr · 177 · 177 recorded · 177 measured · Source: the US BTS May · 264 · 264 recorded · 264 measured · Source: the US BTS Jun · 206 · 206 recorded · 206 measured · Source: the US BTS Jul · 182 · 182 recorded · 181 measured · Source: the US BTS Aug · 86 · 86 recorded · 86 measured · Source: the US BTS Sep · 120 · 120 recorded · 120 measured · Source: the US BTS Oct · 112 · 112 recorded · 112 measured · Source: the US BTS Nov · 169 · 169 recorded · 167 measured · Source: the US BTS Dec · 146 · 146 recorded · 143 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—99106
FebFewer than 200 measured departures—109111
MarFewer than 200 measured departures—167167
AprFewer than 200 measured departures—177177
May86.0%5.4 min264264
Jun85.4%4.0 min206206
JulFewer than 200 measured departures—181182
AugFewer than 200 measured departures—8686
SepFewer than 200 measured departures—120120
OctFewer than 200 measured departures—112112
NovFewer than 200 measured departures—167169
DecFewer than 200 measured departures—143146

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 84.8% 1,565
  • Delayed >15 min 14.4% 266
  • Cancelled 0.8% 15
  • 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

10
10 of 10
Flight numbersBy direction DeparturesOn time
OO3483 PDX → STS 319 84.2%
OO3371 STS → PDX 305 82.5%
OO3417 STS → PDX 291 90.3%
OO3382 PDX → STS 256 86.7%
OO3321 STS → PDX 135 72.2%
OO3386 PDX → STS 87 85.1%
OO3318 PDX → STS 77 87.0%
OO3009 STS → PDX 52 88.5%
OO3050 PDX → STS 49 85.7%
OO3115 PDX → STS 43 90.7%

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 119 +91.9% 1 94.1%
June 2026 124 +51.2% 0 91.1%
May 2026 140 +12.9% 0 89.3%
April 2026 100 +29.9% 0 88.0%
March 2026 107 +78.3% 0 90.7%
February 2026 78 +151.6% 1 85.9%
January 2026 89 +790.0% 7 82.0%
December 2025 85 +46.6% 3 64.7%
November 2025 116 +127.5% 1 82.8%
October 2025 72 +80.0% 0 88.9%
September 2025 120 0 95.0%
August 2025 86 0 88.4%
July 2025 62 0 88.7%
June 2025 82 0 76.8%
May 2025 124 0 82.3%
April 2025 77 0 79.2%
March 2025 60 0 83.3%
February 2025 31 1 80.6%
January 2025 10 0 60.0%
December 2024 58 0 79.3%
November 2024 51 1 80.4%
October 2024 40 0 90.0%

How to read this chart

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