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703 km · Domestic

Boise Air Terminal/Gowen Field (BOI) – Sacramento (SMF)

In July 2026, 178 flights operated between Boise Air Terminal/Gowen Field and Sacramento (both directions), and 79.8% 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
January150134▼ 10.7%
February152140▼ 7.9%
March186127▼ 31.7%
April168126▼ 25.0%
May130134▲ 3.1%
June158166▲ 5.1%
July168178▲ 6.0%
August148––
September146––
October116–in progress
November150––
December154––
Year to date (Jan–Jul)1,1121,005▼ 9.6%

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
January80.0%87.3%▲ 9.1%
February86.2%80.7%▼ 6.4%
March81.7%85.0%▲ 4.0%
April88.1%77.8%▼ 11.7%
May79.2%73.9%▼ 6.7%
June74.1%68.1%▼ 8.1%
July73.2%79.8%▲ 9.0%
August79.1%––
September83.6%––
October81.9%–in progress
November80.0%––
December77.9%––
Year-to-date average (Jan–Jul)80.4%78.9%▼ 1.8%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January00–
February00–
March01–
April00–
May00–
June00–
July00–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)01

Airlines on this route

  1. Southwest Airlines 91.4%
  2. SkyWest Airlines 8.6%

Oct 1, 2024 – Jul 31, 2026

By direction

BOI → SMF

Scheduled flights
1,629
Flights operated
1,628
Cancelled
1 · 0.1%
On-time departures
80.8%

SMF → BOI

Scheduled flights
1,629
Flights operated
1,629
Cancelled
0 · 0.0%
On-time departures
79.6%

BOI → SMF and SMF → BOI counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 2,977 91.4% 79.8% 1
SkyWest Airlines OO 281 8.6% 84.7% 0

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 delay06:00–07:00-2.1min · 271 recorded · 271 measured
Gap to highest-delay hour18.3min06:00 ↔ 19:00
Recorded flights3,258BOI–SMF

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 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 06:00 · 97.8% · 271 recorded · 271 measured · Source: the US BTS 07:00 · 94.9% · 336 recorded · 336 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 137 recorded · 137 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 74 recorded · 74 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 159 recorded · 159 measured · Source: the US BTS 11:00 · 86.2% · 218 recorded · 218 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 163 recorded · 163 measured · Source: the US BTS 13:00 · 80.3% · 294 recorded · 294 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 131 recorded · 131 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 188 recorded · 188 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 138 recorded · 138 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 158 recorded · 157 measured · Source: the US BTS 18:00 · 67.8% · 233 recorded · 233 measured · Source: the US BTS 19:00 · 71.1% · 325 recorded · 325 measured · Source: the US BTS 20:00 · 69.4% · 229 recorded · 229 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 178 recorded · 178 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 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 06:00 · -2.1 min · 271 recorded · 271 measured · Source: the US BTS 07:00 · -0.4 min · 336 recorded · 336 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 137 recorded · 137 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 74 recorded · 74 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 159 recorded · 159 measured · Source: the US BTS 11:00 · 4.7 min · 218 recorded · 218 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 163 recorded · 163 measured · Source: the US BTS 13:00 · 7.3 min · 294 recorded · 294 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 131 recorded · 131 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 188 recorded · 188 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 138 recorded · 138 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 158 recorded · 157 measured · Source: the US BTS 18:00 · 14.9 min · 233 recorded · 233 measured · Source: the US BTS 19:00 · 16.2 min · 325 recorded · 325 measured · Source: the US BTS 20:00 · 15.1 min · 229 recorded · 229 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 178 recorded · 178 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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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 · 26 · 26 recorded · 26 measured · Source: the US BTS 06:00 · 271 · 271 recorded · 271 measured · Source: the US BTS 07:00 · 336 · 336 recorded · 336 measured · Source: the US BTS 08:00 · 137 · 137 recorded · 137 measured · Source: the US BTS 09:00 · 74 · 74 recorded · 74 measured · Source: the US BTS 10:00 · 159 · 159 recorded · 159 measured · Source: the US BTS 11:00 · 218 · 218 recorded · 218 measured · Source: the US BTS 12:00 · 163 · 163 recorded · 163 measured · Source: the US BTS 13:00 · 294 · 294 recorded · 294 measured · Source: the US BTS 14:00 · 131 · 131 recorded · 131 measured · Source: the US BTS 15:00 · 188 · 188 recorded · 188 measured · Source: the US BTS 16:00 · 138 · 138 recorded · 138 measured · Source: the US BTS 17:00 · 158 · 158 recorded · 157 measured · Source: the US BTS 18:00 · 233 · 233 recorded · 233 measured · Source: the US BTS 19:00 · 325 · 325 recorded · 325 measured · Source: the US BTS 20:00 · 229 · 229 recorded · 229 measured · Source: the US BTS 21:00 · 178 · 178 recorded · 178 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———
05:00Fewer than 200 measured departures—2626
06:0097.8%-2.1 min271271
07:0094.9%-0.4 min336336
08:00Fewer than 200 measured departures—137137
09:00Fewer than 200 measured departures—7474
10:00Fewer than 200 measured departures—159159
11:0086.2%4.7 min218218
12:00Fewer than 200 measured departures—163163
13:0080.3%7.3 min294294
14:00Fewer than 200 measured departures—131131
15:00Fewer than 200 measured departures—188188
16:00Fewer than 200 measured departures—138138
17:00Fewer than 200 measured departures—157158
18:0067.8%14.9 min233233
19:0071.1%16.2 min325325
20:0069.4%15.1 min229229
21:00Fewer than 200 measured departures—178178
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 · 80.0% · 504 recorded · 504 measured · Source: the US BTS Tuesday · 87.6% · 443 recorded · 443 measured · Source: the US BTS Wednesday · 87.1% · 434 recorded · 434 measured · Source: the US BTS Thursday · 75.7% · 486 recorded · 486 measured · Source: the US BTS Friday · 73.9% · 502 recorded · 502 measured · Source: the US BTS Saturday · 82.9% · 369 recorded · 368 measured · Source: the US BTS Sunday · 76.9% · 520 recorded · 520 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 · 7.7 min · 504 recorded · 504 measured · Source: the US BTS Tuesday · 3.9 min · 443 recorded · 443 measured · Source: the US BTS Wednesday · 3.7 min · 434 recorded · 434 measured · Source: the US BTS Thursday · 10.6 min · 486 recorded · 486 measured · Source: the US BTS Friday · 14.7 min · 502 recorded · 502 measured · Source: the US BTS Saturday · 5.6 min · 369 recorded · 368 measured · Source: the US BTS Sunday · 9.3 min · 520 recorded · 520 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 · 504 · 504 recorded · 504 measured · Source: the US BTS Tuesday · 443 · 443 recorded · 443 measured · Source: the US BTS Wednesday · 434 · 434 recorded · 434 measured · Source: the US BTS Thursday · 486 · 486 recorded · 486 measured · Source: the US BTS Friday · 502 · 502 recorded · 502 measured · Source: the US BTS Saturday · 369 · 369 recorded · 368 measured · Source: the US BTS Sunday · 520 · 520 recorded · 520 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.0%7.7 min504504
Tuesday87.6%3.9 min443443
Wednesday87.1%3.7 min434434
Thursday75.7%10.6 min486486
Friday73.9%14.7 min502502
Saturday82.9%5.6 min368369
Sunday76.9%9.3 min520520

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 · 83.5% · 284 recorded · 284 measured · Source: the US BTS Feb · 83.6% · 292 recorded · 292 measured · Source: the US BTS Mar · 83.1% · 314 recorded · 313 measured · Source: the US BTS Apr · 83.7% · 294 recorded · 294 measured · Source: the US BTS May · 76.5% · 264 recorded · 264 measured · Source: the US BTS Jun · 71.0% · 324 recorded · 324 measured · Source: the US BTS Jul · 76.6% · 346 recorded · 346 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 148 recorded · 148 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 146 recorded · 146 measured · Source: the US BTS Oct · 85.2% · 229 recorded · 229 measured · Source: the US BTS Nov · 82.6% · 333 recorded · 333 measured · Source: the US BTS Dec · 77.5% · 284 recorded · 284 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 · 4.0 min · 284 recorded · 284 measured · Source: the US BTS Feb · 5.1 min · 292 recorded · 292 measured · Source: the US BTS Mar · 8.2 min · 314 recorded · 313 measured · Source: the US BTS Apr · 3.8 min · 294 recorded · 294 measured · Source: the US BTS May · 10.5 min · 264 recorded · 264 measured · Source: the US BTS Jun · 13.7 min · 324 recorded · 324 measured · Source: the US BTS Jul · 9.4 min · 346 recorded · 346 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 148 recorded · 148 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 146 recorded · 146 measured · Source: the US BTS Oct · 5.7 min · 229 recorded · 229 measured · Source: the US BTS Nov · 9.1 min · 333 recorded · 333 measured · Source: the US BTS Dec · 12.4 min · 284 recorded · 284 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 · 284 · 284 recorded · 284 measured · Source: the US BTS Feb · 292 · 292 recorded · 292 measured · Source: the US BTS Mar · 314 · 314 recorded · 313 measured · Source: the US BTS Apr · 294 · 294 recorded · 294 measured · Source: the US BTS May · 264 · 264 recorded · 264 measured · Source: the US BTS Jun · 324 · 324 recorded · 324 measured · Source: the US BTS Jul · 346 · 346 recorded · 346 measured · Source: the US BTS Aug · 148 · 148 recorded · 148 measured · Source: the US BTS Sep · 146 · 146 recorded · 146 measured · Source: the US BTS Oct · 229 · 229 recorded · 229 measured · Source: the US BTS Nov · 333 · 333 recorded · 333 measured · Source: the US BTS Dec · 284 · 284 recorded · 284 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan83.5%4.0 min284284
Feb83.6%5.1 min292292
Mar83.1%8.2 min313314
Apr83.7%3.8 min294294
May76.5%10.5 min264264
Jun71.0%13.7 min324324
Jul76.6%9.4 min346346
AugFewer than 200 measured departures—148148
SepFewer than 200 measured departures—146146
Oct85.2%5.7 min229229
Nov82.6%9.1 min333333
Dec77.5%12.4 min284284

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 80.2% 2,613
  • Delayed >15 min 19.8% 644
  • Cancelled 0.0% 1
  • 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

38
38 of 38
Flight numbersBy direction DeparturesOn time
WN1401 BOI → SMF 101 87.1%
WN4563 BOI → SMF 95 91.6%
WN3214 BOI → SMF 91 82.4%
OO3441 BOI → SMF 89 86.5%
OO3442 SMF → BOI 89 84.3%
WN1406 BOI → SMF 62 41.9%
WN2776 SMF → BOI 60 86.7%
WN2547 SMF → BOI 59 79.7%
WN3413 SMF → BOI 59 93.2%
WN1166 SMF → BOI 58 82.8%
WN1397 BOI → SMF 58 98.3%
WN2130 SMF → BOI 58 94.8%
WN3163 BOI → SMF 58 87.9%
WN4296 SMF → BOI 58 84.5%
WN4353 SMF → BOI 58 69.0%
WN3762 SMF → BOI 57 68.4%
WN4316 SMF → BOI 57 75.4%
WN546 BOI → SMF 57 94.7%
WN717 BOI → SMF 57 52.6%
WN1402 BOI → SMF 52 71.2%
WN290 SMF → BOI 51 90.2%
WN2519 BOI → SMF 47 87.2%
WN1417 BOI → SMF 46 89.1%
WN2570 SMF → BOI 43 60.5%
WN715 BOI → SMF 42 95.2%
WN1379 SMF → BOI 36 66.7%
WN3216 BOI → SMF 34 100.0%
WN642 BOI → SMF 34 100.0%
WN716 BOI → SMF 34 76.5%
WN2586 BOI → SMF 33 97.0%
WN3608 SMF → BOI 33 87.9%
WN418 SMF → BOI 33 51.5%
WN4415 SMF → BOI 33 84.9%
WN4315 SMF → BOI 32 81.3%
WN1409 BOI → SMF 31 71.0%
WN1461 BOI → SMF 31 93.6%
WN1495 SMF → BOI 31 96.8%
WN3083 SMF → BOI 31 58.1%

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 178 +6.0% 0 79.8%
June 2026 166 +5.1% 0 68.1%
May 2026 134 +3.1% 0 73.9%
April 2026 126 −25.0% 0 77.8%
March 2026 127 −31.7% 1 85.0%
February 2026 140 −7.9% 0 80.7%
January 2026 134 −10.7% 0 87.3%
December 2025 154 +18.5% 0 77.9%
November 2025 150 −18.0% 0 80.0%
October 2025 116 +2.7% 0 81.9%
September 2025 146 0 83.6%
August 2025 148 0 79.1%
July 2025 168 0 73.2%
June 2025 158 0 74.1%
May 2025 130 0 79.2%
April 2025 168 0 88.1%
March 2025 186 0 81.7%
February 2025 152 0 86.2%
January 2025 150 0 80.0%
December 2024 130 0 76.9%
November 2024 183 0 84.7%
October 2024 113 0 88.5%

How to read this chart

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