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1,122 km · Domestic

Seattle–Tacoma (SEA) – Mineta San Jose (SJC)

In July 2026, 874 flights operated between Seattle–Tacoma and Mineta San Jose (both directions), and 74.5% 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
January702657▼ 6.4%
February620681▲ 9.8%
March695644▼ 7.3%
April690610▼ 11.6%
May770709▼ 7.9%
June812801▼ 1.4%
July831874▲ 5.2%
August784––
September734––
October775–in progress
November744––
December700––
Year to date (Jan–Jul)5,1204,976▼ 2.8%

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
January90.3%83.6%▼ 7.4%
February83.2%89.4%▲ 7.5%
March84.6%82.3%▼ 2.7%
April85.2%86.6%▲ 1.6%
May83.5%83.5%0.0%
June78.0%77.3%▼ 0.9%
July75.1%74.5%▼ 0.8%
August80.1%––
September85.3%––
October86.2%–in progress
November87.0%––
December81.4%––
Year-to-date average (Jan–Jul)82.8%82.5%▼ 0.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January56▲ 20.0%
February140▼ 100.0%
March414▲ 250.0%
April01–
May52▼ 60.0%
June122▼ 83.3%
July192▼ 89.5%
August6––
September0––
October9–in progress
November3––
December7––
Year to date (Jan–Jul)5927▼ 54.2%

Airlines on this route

  1. Alaska Airlines 43.0%
  2. SkyWest Airlines 34.7%
  3. Southwest Airlines 22.3%
  4. American Airlines 0.0%
  5. United Airlines 0.0%

Oct 1, 2024 – Jul 31, 2026

By direction

SEA → SJC

Scheduled flights
7,923
Flights operated
7,867
Cancelled
56 · 0.7%
On-time departures
80.6%

SJC → SEA

Scheduled flights
7,924
Flights operated
7,864
Cancelled
60 · 0.8%
On-time departures
85.2%

SEA → SJC and SJC → SEA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Alaska Airlines AS 6,810 43.0% 82.2% 105
SkyWest Airlines OO 5,500 34.7% 89.5% 6
Southwest Airlines WN 3,529 22.3% 74.0% 5
American Airlines AA 6 0.0% 100.0% 0
United Airlines UA 2 0.0% 100.0% 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 delay06:00–07:00-2.2min · 910 recorded · 907 measured
Gap to highest-delay hour18.4min06:00 ↔ 21:00
Recorded flights15,847SEA–SJC

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 · 96.7% · 910 recorded · 907 measured · Source: the US BTS 07:00 · 94.1% · 1,411 recorded · 1,395 measured · Source: the US BTS 08:00 · 91.7% · 1,127 recorded · 1,119 measured · Source: the US BTS 09:00 · 87.8% · 685 recorded · 679 measured · Source: the US BTS 10:00 · 88.6% · 818 recorded · 804 measured · Source: the US BTS 11:00 · 84.5% · 1,542 recorded · 1,539 measured · Source: the US BTS 12:00 · 77.9% · 807 recorded · 799 measured · Source: the US BTS 13:00 · 77.8% · 541 recorded · 536 measured · Source: the US BTS 14:00 · 81.4% · 1,364 recorded · 1,357 measured · Source: the US BTS 15:00 · 78.7% · 1,257 recorded · 1,245 measured · Source: the US BTS 16:00 · 85.9% · 598 recorded · 595 measured · Source: the US BTS 17:00 · 80.4% · 1,305 recorded · 1,297 measured · Source: the US BTS 18:00 · 77.3% · 1,104 recorded · 1,094 measured · Source: the US BTS 19:00 · 78.7% · 1,042 recorded · 1,038 measured · Source: the US BTS 20:00 · 67.4% · 940 recorded · 939 measured · Source: the US BTS 21:00 · 64.7% · 396 recorded · 388 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 · -2.2 min · 910 recorded · 907 measured · Source: the US BTS 07:00 · -1.5 min · 1,411 recorded · 1,395 measured · Source: the US BTS 08:00 · 0.2 min · 1,127 recorded · 1,119 measured · Source: the US BTS 09:00 · 3.2 min · 685 recorded · 679 measured · Source: the US BTS 10:00 · 2.7 min · 818 recorded · 804 measured · Source: the US BTS 11:00 · 5.0 min · 1,542 recorded · 1,539 measured · Source: the US BTS 12:00 · 7.6 min · 807 recorded · 799 measured · Source: the US BTS 13:00 · 7.6 min · 541 recorded · 536 measured · Source: the US BTS 14:00 · 7.8 min · 1,364 recorded · 1,357 measured · Source: the US BTS 15:00 · 8.4 min · 1,257 recorded · 1,245 measured · Source: the US BTS 16:00 · 4.0 min · 598 recorded · 595 measured · Source: the US BTS 17:00 · 7.6 min · 1,305 recorded · 1,297 measured · Source: the US BTS 18:00 · 9.2 min · 1,104 recorded · 1,094 measured · Source: the US BTS 19:00 · 8.9 min · 1,042 recorded · 1,038 measured · Source: the US BTS 20:00 · 14.7 min · 940 recorded · 939 measured · Source: the US BTS 21:00 · 16.2 min · 396 recorded · 388 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 · 910 · 910 recorded · 907 measured · Source: the US BTS 07:00 · 1,411 · 1,411 recorded · 1,395 measured · Source: the US BTS 08:00 · 1,127 · 1,127 recorded · 1,119 measured · Source: the US BTS 09:00 · 685 · 685 recorded · 679 measured · Source: the US BTS 10:00 · 818 · 818 recorded · 804 measured · Source: the US BTS 11:00 · 1,542 · 1,542 recorded · 1,539 measured · Source: the US BTS 12:00 · 807 · 807 recorded · 799 measured · Source: the US BTS 13:00 · 541 · 541 recorded · 536 measured · Source: the US BTS 14:00 · 1,364 · 1,364 recorded · 1,357 measured · Source: the US BTS 15:00 · 1,257 · 1,257 recorded · 1,245 measured · Source: the US BTS 16:00 · 598 · 598 recorded · 595 measured · Source: the US BTS 17:00 · 1,305 · 1,305 recorded · 1,297 measured · Source: the US BTS 18:00 · 1,104 · 1,104 recorded · 1,094 measured · Source: the US BTS 19:00 · 1,042 · 1,042 recorded · 1,038 measured · Source: the US BTS 20:00 · 940 · 940 recorded · 939 measured · Source: the US BTS 21:00 · 396 · 396 recorded · 388 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———
06:0096.7%-2.2 min907910
07:0094.1%-1.5 min1,3951,411
08:0091.7%0.2 min1,1191,127
09:0087.8%3.2 min679685
10:0088.6%2.7 min804818
11:0084.5%5.0 min1,5391,542
12:0077.9%7.6 min799807
13:0077.8%7.6 min536541
14:0081.4%7.8 min1,3571,364
15:0078.7%8.4 min1,2451,257
16:0085.9%4.0 min595598
17:0080.4%7.6 min1,2971,305
18:0077.3%9.2 min1,0941,104
19:0078.7%8.9 min1,0381,042
20:0067.4%14.7 min939940
21:0064.7%16.2 min388396
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 · 80.9% · 2,445 recorded · 2,428 measured · Source: the US BTS Tuesday · 86.9% · 2,246 recorded · 2,232 measured · Source: the US BTS Wednesday · 86.1% · 2,258 recorded · 2,240 measured · Source: the US BTS Thursday · 81.7% · 2,409 recorded · 2,394 measured · Source: the US BTS Friday · 81.1% · 2,403 recorded · 2,375 measured · Source: the US BTS Saturday · 85.4% · 1,805 recorded · 1,794 measured · Source: the US BTS Sunday · 79.4% · 2,281 recorded · 2,268 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 · 7.6 min · 2,445 recorded · 2,428 measured · Source: the US BTS Tuesday · 2.8 min · 2,246 recorded · 2,232 measured · Source: the US BTS Wednesday · 3.4 min · 2,258 recorded · 2,240 measured · Source: the US BTS Thursday · 6.9 min · 2,409 recorded · 2,394 measured · Source: the US BTS Friday · 7.3 min · 2,403 recorded · 2,375 measured · Source: the US BTS Saturday · 4.4 min · 1,805 recorded · 1,794 measured · Source: the US BTS Sunday · 7.4 min · 2,281 recorded · 2,268 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 · 2,445 · 2,445 recorded · 2,428 measured · Source: the US BTS Tuesday · 2,246 · 2,246 recorded · 2,232 measured · Source: the US BTS Wednesday · 2,258 · 2,258 recorded · 2,240 measured · Source: the US BTS Thursday · 2,409 · 2,409 recorded · 2,394 measured · Source: the US BTS Friday · 2,403 · 2,403 recorded · 2,375 measured · Source: the US BTS Saturday · 1,805 · 1,805 recorded · 1,794 measured · Source: the US BTS Sunday · 2,281 · 2,281 recorded · 2,268 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.9%7.6 min2,4282,445
Tuesday86.9%2.8 min2,2322,246
Wednesday86.1%3.4 min2,2402,258
Thursday81.7%6.9 min2,3942,409
Friday81.1%7.3 min2,3752,403
Saturday85.4%4.4 min1,7941,805
Sunday79.4%7.4 min2,2682,281

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 · 87.1% · 1,370 recorded · 1,359 measured · Source: the US BTS Feb · 86.5% · 1,315 recorded · 1,301 measured · Source: the US BTS Mar · 83.5% · 1,357 recorded · 1,339 measured · Source: the US BTS Apr · 85.9% · 1,301 recorded · 1,300 measured · Source: the US BTS May · 83.5% · 1,486 recorded · 1,479 measured · Source: the US BTS Jun · 77.6% · 1,627 recorded · 1,613 measured · Source: the US BTS Jul · 74.8% · 1,726 recorded · 1,705 measured · Source: the US BTS Aug · 80.1% · 790 recorded · 784 measured · Source: the US BTS Sep · 85.3% · 734 recorded · 734 measured · Source: the US BTS Oct · 86.8% · 1,292 recorded · 1,281 measured · Source: the US BTS Nov · 86.6% · 1,450 recorded · 1,445 measured · Source: the US BTS Dec · 81.0% · 1,399 recorded · 1,391 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 · 3.9 min · 1,370 recorded · 1,359 measured · Source: the US BTS Feb · 3.6 min · 1,315 recorded · 1,301 measured · Source: the US BTS Mar · 5.7 min · 1,357 recorded · 1,339 measured · Source: the US BTS Apr · 3.6 min · 1,301 recorded · 1,300 measured · Source: the US BTS May · 4.8 min · 1,486 recorded · 1,479 measured · Source: the US BTS Jun · 9.2 min · 1,627 recorded · 1,613 measured · Source: the US BTS Jul · 11.2 min · 1,726 recorded · 1,705 measured · Source: the US BTS Aug · 6.6 min · 790 recorded · 784 measured · Source: the US BTS Sep · 3.6 min · 734 recorded · 734 measured · Source: the US BTS Oct · 2.8 min · 1,292 recorded · 1,281 measured · Source: the US BTS Nov · 3.5 min · 1,450 recorded · 1,445 measured · Source: the US BTS Dec · 8.0 min · 1,399 recorded · 1,391 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 1,370 · 1,370 recorded · 1,359 measured · Source: the US BTS Feb · 1,315 · 1,315 recorded · 1,301 measured · Source: the US BTS Mar · 1,357 · 1,357 recorded · 1,339 measured · Source: the US BTS Apr · 1,301 · 1,301 recorded · 1,300 measured · Source: the US BTS May · 1,486 · 1,486 recorded · 1,479 measured · Source: the US BTS Jun · 1,627 · 1,627 recorded · 1,613 measured · Source: the US BTS Jul · 1,726 · 1,726 recorded · 1,705 measured · Source: the US BTS Aug · 790 · 790 recorded · 784 measured · Source: the US BTS Sep · 734 · 734 recorded · 734 measured · Source: the US BTS Oct · 1,292 · 1,292 recorded · 1,281 measured · Source: the US BTS Nov · 1,450 · 1,450 recorded · 1,445 measured · Source: the US BTS Dec · 1,399 · 1,399 recorded · 1,391 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan87.1%3.9 min1,3591,370
Feb86.5%3.6 min1,3011,315
Mar83.5%5.7 min1,3391,357
Apr85.9%3.6 min1,3001,301
May83.5%4.8 min1,4791,486
Jun77.6%9.2 min1,6131,627
Jul74.8%11.2 min1,7051,726
Aug80.1%6.6 min784790
Sep85.3%3.6 min734734
Oct86.8%2.8 min1,2811,292
Nov86.6%3.5 min1,4451,450
Dec81.0%8.0 min1,3911,399

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 82.3% 13,048
  • Delayed >15 min 16.9% 2,683
  • Cancelled 0.7% 116
  • 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

117
117 of 117
Flight numbersBy direction DeparturesOn time
OO3789 SEA → SJC 624 84.1%
OO3736 SEA → SJC 441 91.8%
OO3736 SJC → SEA 438 91.6%
OO3840 SEA → SJC 418 90.9%
OO4041 SJC → SEA 403 95.5%
AS1311 SJC → SEA 365 92.4%
AS1310 SEA → SJC 344 69.8%
OO3789 SJC → SEA 307 85.3%
OO3840 SJC → SEA 305 90.2%
AS1080 SEA → SJC 300 84.4%
AS1226 SEA → SJC 245 96.6%
AS745 SJC → SEA 222 75.5%
AS657 SEA → SJC 218 75.7%
OO3994 SEA → SJC 208 90.9%
OO4088 SJC → SEA 207 95.2%
AS1303 SEA → SJC 205 80.9%
OO3956 SEA → SJC 200 80.9%
AS1046 SJC → SEA 196 88.0%
OO3602 SJC → SEA 195 84.0%
OO3559 SJC → SEA 193 93.3%
OO3559 SEA → SJC 193 93.3%
AS1079 SJC → SEA 190 97.3%
AS1314 SJC → SEA 186 92.4%
AS1341 SEA → SJC 184 92.2%
AS521 SEA → SJC 184 83.0%
OO3557 SEA → SJC 184 91.8%
AS1227 SJC → SEA 182 83.8%
AS523 SJC → SEA 177 85.2%
AS1185 SJC → SEA 176 84.5%
AS1115 SJC → SEA 174 80.1%
OO4100 SJC → SEA 168 88.0%
AS341 SEA → SJC 167 77.8%
AS762 SJC → SEA 160 92.5%
AS1046 SEA → SJC 145 69.2%
AS1304 SJC → SEA 142 87.2%
AS1114 SEA → SJC 141 67.6%
AS1175 SJC → SEA 141 72.7%
AS1200 SEA → SJC 141 78.4%
AS761 SEA → SJC 141 77.9%
AS1193 SJC → SEA 136 93.2%
OO4100 SEA → SJC 134 85.7%
AS1047 SJC → SEA 127 72.0%
AS1081 SJC → SEA 122 85.0%
AS1130 SJC → SEA 110 90.8%
WN3001 SJC → SEA 105 82.9%
AS918 SEA → SJC 101 79.6%
WN4310 SJC → SEA 101 90.1%
OO3897 SEA → SJC 86 87.2%
OO3897 SJC → SEA 86 89.5%
AS975 SEA → SJC 84 73.8%
AS1085 SEA → SJC 78 89.6%
AS154 SEA → SJC 78 78.2%
WN823 SEA → SJC 74 83.8%
OO4132 SEA → SJC 73 80.8%
OO3999 SJC → SEA 71 87.3%
AS335 SEA → SJC 66 75.4%
WN4380 SEA → SJC 63 75.8%
AS1084 SEA → SJC 62 88.7%
WN1534 SEA → SJC 62 71.0%
WN1437 SEA → SJC 60 43.3%
WN2326 SJC → SEA 60 51.7%
WN4157 SJC → SEA 60 68.3%
WN805 SJC → SEA 60 96.7%
WN1730 SJC → SEA 58 89.7%
WN1741 SJC → SEA 58 84.5%
WN3705 SJC → SEA 58 56.9%
WN4263 SEA → SJC 58 58.6%
AS583 SJC → SEA 57 88.9%
WN2089 SEA → SJC 57 52.6%
WN4260 SEA → SJC 57 79.0%
WN4509 SJC → SEA 57 79.0%
AS1201 SJC → SEA 54 72.0%
OO3999 SEA → SJC 54 94.4%
AS481 SJC → SEA 53 50.9%
AS1426 SJC → SEA 52 76.5%
AS521 SJC → SEA 52 58.8%
AS539 SEA → SJC 52 73.1%
WN1548 SJC → SEA 52 78.9%
AS1192 SEA → SJC 51 64.7%
AS1448 SEA → SJC 51 98.0%
AS319 SEA → SJC 51 51.0%
WN170 SEA → SJC 50 66.0%
AS582 SEA → SJC 49 89.1%
WN1465 SEA → SJC 43 46.5%
AS501 SJC → SEA 42 97.6%
WN1181 SEA → SJC 42 100.0%
WN1874 SJC → SEA 42 88.1%
WN3632 SJC → SEA 42 100.0%
WN4433 SEA → SJC 42 85.7%
WN1926 SEA → SJC 41 97.5%
WN3404 SJC → SEA 41 73.2%
WN4982 SJC → SEA 41 68.3%
WN2356 SEA → SJC 40 82.5%
AS1366 SEA → SJC 37 89.2%
AS1413 SJC → SEA 37 67.6%
OO3785 SJC → SEA 36 91.4%
OO3654 SJC → SEA 35 100.0%
WN3504 SEA → SJC 34 91.2%
WN1504 SEA → SJC 33 93.9%
WN3626 SEA → SJC 33 87.9%
WN4069 SJC → SEA 33 69.7%
OO3637 SJC → SEA 32 93.8%
OO3681 SEA → SJC 32 81.3%
OO4114 SJC → SEA 32 100.0%
WN1097 SJC → SEA 32 96.9%
WN3764 SJC → SEA 32 78.1%
WN4318 SEA → SJC 32 71.9%
AS310 SJC → SEA 31 96.8%
OO4132 SJC → SEA 31 93.6%
WN1323 SJC → SEA 31 93.6%
WN1910 SJC → SEA 31 6.5%
WN4444 SEA → SJC 31 51.6%
AS1106 SEA → SJC 30 70.0%
OO3641 SJC → SEA 30 100.0%
OO3644 SJC → SEA 30 86.7%
WN3493 SEA → SJC 30 70.0%
WN4045 SJC → SEA 30 93.3%

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 874 +5.2% 2 74.5%
June 2026 801 −1.4% 2 77.3%
May 2026 709 −7.9% 2 83.5%
April 2026 610 −11.6% 1 86.6%
March 2026 644 −7.3% 14 82.3%
February 2026 681 +9.8% 0 89.4%
January 2026 657 −6.4% 6 83.6%
December 2025 700 +1.3% 7 81.4%
November 2025 744 +6.1% 3 87.0%
October 2025 775 +53.2% 9 86.2%
September 2025 734 0 85.3%
August 2025 784 6 80.1%
July 2025 831 19 75.1%
June 2025 812 12 78.0%
May 2025 770 5 83.5%
April 2025 690 0 85.2%
March 2025 695 4 84.6%
February 2025 620 14 83.2%
January 2025 702 5 90.3%
December 2024 691 1 80.5%
November 2024 701 2 86.3%
October 2024 506 2 87.7%

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