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1,093 km · Domestic

Seattle–Tacoma (SEA) – San Francisco (SFO)

In July 2026, 1,321 flights operated between Seattle–Tacoma and San Francisco (both directions), and 55.8% 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
January1,047956▼ 8.7%
February945952▲ 0.7%
March1,1081,027▼ 7.3%
April1,073991▼ 7.6%
May1,2671,172▼ 7.5%
June1,2531,257▲ 0.3%
July1,2531,321▲ 5.4%
August1,231––
September1,162––
October1,156–in progress
November1,107––
December1,109––
Year to date (Jan–Jul)7,9467,676▼ 3.4%

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
January86.2%78.5%▼ 8.9%
February75.8%80.5%▲ 6.2%
March77.9%83.1%▲ 6.7%
April83.6%68.6%▼ 17.9%
May80.4%59.4%▼ 26.1%
June75.9%54.4%▼ 28.3%
July75.9%55.8%▼ 26.5%
August77.7%––
September81.8%––
October78.4%–in progress
November79.6%––
December72.1%––
Year-to-date average (Jan–Jul)79.4%68.6%▼ 13.6%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January215▲ 650.0%
February219▼ 57.1%
March529▲ 480.0%
April60▼ 100.0%
May513▲ 160.0%
June89▲ 12.5%
July2511▼ 56.0%
August8––
September7––
October13–in progress
November25––
December8––
Year to date (Jan–Jul)7286▲ 19.4%

Airlines on this route

  1. Alaska Airlines 39.6%
  2. United Airlines 30.5%
  3. SkyWest Airlines 17.2%
  4. Delta Air Lines 12.7%
  5. Southwest Airlines 0.0%

Oct 1, 2024 – Jul 31, 2026

By direction

SEA → SFO

Scheduled flights
12,270
Flights operated
12,148
Cancelled
122 · 1.0%
On-time departures
72.1%

SFO → SEA

Scheduled flights
12,270
Flights operated
12,146
Cancelled
124 · 1.0%
On-time departures
78.4%

SEA → SFO and SFO → SEA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Alaska Airlines AS 9,715 39.6% 70.6% 133
United Airlines UA 7,473 30.5% 77.8% 45
SkyWest Airlines OO 4,220 17.2% 80.5% 30
Delta Air Lines DL 3,125 12.7% 76.1% 38
Southwest Airlines WN 7 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 delay05:00–06:00-0.3min · 740 recorded · 734 measured
Gap to highest-delay hour20.1min05:00 ↔ 22:00
Recorded flights24,540SEA–SFO

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 · 96.1% · 740 recorded · 734 measured · Source: the US BTS 06:00 · 93.9% · 1,315 recorded · 1,304 measured · Source: the US BTS 07:00 · 76.0% · 1,798 recorded · 1,767 measured · Source: the US BTS 08:00 · 75.2% · 1,262 recorded · 1,236 measured · Source: the US BTS 09:00 · 80.7% · 1,599 recorded · 1,584 measured · Source: the US BTS 10:00 · 66.1% · 1,365 recorded · 1,341 measured · Source: the US BTS 11:00 · 72.0% · 1,434 recorded · 1,411 measured · Source: the US BTS 12:00 · 77.6% · 870 recorded · 857 measured · Source: the US BTS 13:00 · 77.4% · 2,251 recorded · 2,238 measured · Source: the US BTS 14:00 · 74.8% · 1,240 recorded · 1,228 measured · Source: the US BTS 15:00 · 71.2% · 903 recorded · 895 measured · Source: the US BTS 16:00 · 76.3% · 1,919 recorded · 1,904 measured · Source: the US BTS 17:00 · 72.1% · 1,956 recorded · 1,947 measured · Source: the US BTS 18:00 · 71.8% · 1,412 recorded · 1,406 measured · Source: the US BTS 19:00 · 69.5% · 1,519 recorded · 1,510 measured · Source: the US BTS 20:00 · 69.1% · 1,441 recorded · 1,428 measured · Source: the US BTS 21:00 · 69.3% · 980 recorded · 971 measured · Source: the US BTS 22:00 · 68.6% · 534 recorded · 531 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 2 recorded · 2 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 · -0.3 min · 740 recorded · 734 measured · Source: the US BTS 06:00 · 0.3 min · 1,315 recorded · 1,304 measured · Source: the US BTS 07:00 · 10.8 min · 1,798 recorded · 1,767 measured · Source: the US BTS 08:00 · 14.3 min · 1,262 recorded · 1,236 measured · Source: the US BTS 09:00 · 11.7 min · 1,599 recorded · 1,584 measured · Source: the US BTS 10:00 · 18.7 min · 1,365 recorded · 1,341 measured · Source: the US BTS 11:00 · 13.1 min · 1,434 recorded · 1,411 measured · Source: the US BTS 12:00 · 13.3 min · 870 recorded · 857 measured · Source: the US BTS 13:00 · 13.8 min · 2,251 recorded · 2,238 measured · Source: the US BTS 14:00 · 11.7 min · 1,240 recorded · 1,228 measured · Source: the US BTS 15:00 · 14.5 min · 903 recorded · 895 measured · Source: the US BTS 16:00 · 12.3 min · 1,919 recorded · 1,904 measured · Source: the US BTS 17:00 · 16.2 min · 1,956 recorded · 1,947 measured · Source: the US BTS 18:00 · 17.1 min · 1,412 recorded · 1,406 measured · Source: the US BTS 19:00 · 16.4 min · 1,519 recorded · 1,510 measured · Source: the US BTS 20:00 · 18.1 min · 1,441 recorded · 1,428 measured · Source: the US BTS 21:00 · 16.0 min · 980 recorded · 971 measured · Source: the US BTS 22:00 · 19.8 min · 534 recorded · 531 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 2 recorded · 2 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 · 740 · 740 recorded · 734 measured · Source: the US BTS 06:00 · 1,315 · 1,315 recorded · 1,304 measured · Source: the US BTS 07:00 · 1,798 · 1,798 recorded · 1,767 measured · Source: the US BTS 08:00 · 1,262 · 1,262 recorded · 1,236 measured · Source: the US BTS 09:00 · 1,599 · 1,599 recorded · 1,584 measured · Source: the US BTS 10:00 · 1,365 · 1,365 recorded · 1,341 measured · Source: the US BTS 11:00 · 1,434 · 1,434 recorded · 1,411 measured · Source: the US BTS 12:00 · 870 · 870 recorded · 857 measured · Source: the US BTS 13:00 · 2,251 · 2,251 recorded · 2,238 measured · Source: the US BTS 14:00 · 1,240 · 1,240 recorded · 1,228 measured · Source: the US BTS 15:00 · 903 · 903 recorded · 895 measured · Source: the US BTS 16:00 · 1,919 · 1,919 recorded · 1,904 measured · Source: the US BTS 17:00 · 1,956 · 1,956 recorded · 1,947 measured · Source: the US BTS 18:00 · 1,412 · 1,412 recorded · 1,406 measured · Source: the US BTS 19:00 · 1,519 · 1,519 recorded · 1,510 measured · Source: the US BTS 20:00 · 1,441 · 1,441 recorded · 1,428 measured · Source: the US BTS 21:00 · 980 · 980 recorded · 971 measured · Source: the US BTS 22:00 · 534 · 534 recorded · 531 measured · Source: the US BTS 23:00 · 2 · 2 recorded · 2 measured · Source: the US BTS

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

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———
05:0096.1%-0.3 min734740
06:0093.9%0.3 min1,3041,315
07:0076.0%10.8 min1,7671,798
08:0075.2%14.3 min1,2361,262
09:0080.7%11.7 min1,5841,599
10:0066.1%18.7 min1,3411,365
11:0072.0%13.1 min1,4111,434
12:0077.6%13.3 min857870
13:0077.4%13.8 min2,2382,251
14:0074.8%11.7 min1,2281,240
15:0071.2%14.5 min895903
16:0076.3%12.3 min1,9041,919
17:0072.1%16.2 min1,9471,956
18:0071.8%17.1 min1,4061,412
19:0069.5%16.4 min1,5101,519
20:0069.1%18.1 min1,4281,441
21:0069.3%16.0 min971980
22:0068.6%19.8 min531534
23:00Fewer than 200 measured departures—22

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 71.8% · 3,767 recorded · 3,722 measured · Source: the US BTS Tuesday · 82.7% · 3,394 recorded · 3,383 measured · Source: the US BTS Wednesday · 76.7% · 3,444 recorded · 3,424 measured · Source: the US BTS Thursday · 71.6% · 3,671 recorded · 3,632 measured · Source: the US BTS Friday · 73.0% · 3,678 recorded · 3,618 measured · Source: the US BTS Saturday · 80.7% · 2,994 recorded · 2,961 measured · Source: the US BTS Sunday · 71.7% · 3,592 recorded · 3,554 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 · 15.4 min · 3,767 recorded · 3,722 measured · Source: the US BTS Tuesday · 6.4 min · 3,394 recorded · 3,383 measured · Source: the US BTS Wednesday · 12.5 min · 3,444 recorded · 3,424 measured · Source: the US BTS Thursday · 16.0 min · 3,671 recorded · 3,632 measured · Source: the US BTS Friday · 15.5 min · 3,678 recorded · 3,618 measured · Source: the US BTS Saturday · 9.1 min · 2,994 recorded · 2,961 measured · Source: the US BTS Sunday · 17.4 min · 3,592 recorded · 3,554 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 · 3,767 · 3,767 recorded · 3,722 measured · Source: the US BTS Tuesday · 3,394 · 3,394 recorded · 3,383 measured · Source: the US BTS Wednesday · 3,444 · 3,444 recorded · 3,424 measured · Source: the US BTS Thursday · 3,671 · 3,671 recorded · 3,632 measured · Source: the US BTS Friday · 3,678 · 3,678 recorded · 3,618 measured · Source: the US BTS Saturday · 2,994 · 2,994 recorded · 2,961 measured · Source: the US BTS Sunday · 3,592 · 3,592 recorded · 3,554 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday71.8%15.4 min3,7223,767
Tuesday82.7%6.4 min3,3833,394
Wednesday76.7%12.5 min3,4243,444
Thursday71.6%16.0 min3,6323,671
Friday73.0%15.5 min3,6183,678
Saturday80.7%9.1 min2,9612,994
Sunday71.7%17.4 min3,5543,592

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 · 82.5% · 2,020 recorded · 2,003 measured · Source: the US BTS Feb · 78.1% · 1,927 recorded · 1,897 measured · Source: the US BTS Mar · 80.4% · 2,169 recorded · 2,135 measured · Source: the US BTS Apr · 76.4% · 2,070 recorded · 2,064 measured · Source: the US BTS May · 70.3% · 2,457 recorded · 2,439 measured · Source: the US BTS Jun · 65.1% · 2,527 recorded · 2,510 measured · Source: the US BTS Jul · 65.6% · 2,610 recorded · 2,574 measured · Source: the US BTS Aug · 77.7% · 1,239 recorded · 1,231 measured · Source: the US BTS Sep · 81.8% · 1,169 recorded · 1,162 measured · Source: the US BTS Oct · 81.3% · 1,943 recorded · 1,922 measured · Source: the US BTS Nov · 79.8% · 2,227 recorded · 2,187 measured · Source: the US BTS Dec · 73.5% · 2,182 recorded · 2,170 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 · 9.8 min · 2,020 recorded · 2,003 measured · Source: the US BTS Feb · 13.6 min · 1,927 recorded · 1,897 measured · Source: the US BTS Mar · 11.5 min · 2,169 recorded · 2,135 measured · Source: the US BTS Apr · 11.6 min · 2,070 recorded · 2,064 measured · Source: the US BTS May · 14.7 min · 2,457 recorded · 2,439 measured · Source: the US BTS Jun · 18.7 min · 2,527 recorded · 2,510 measured · Source: the US BTS Jul · 19.7 min · 2,610 recorded · 2,574 measured · Source: the US BTS Aug · 13.2 min · 1,239 recorded · 1,231 measured · Source: the US BTS Sep · 6.7 min · 1,169 recorded · 1,162 measured · Source: the US BTS Oct · 7.6 min · 1,943 recorded · 1,922 measured · Source: the US BTS Nov · 10.7 min · 2,227 recorded · 2,187 measured · Source: the US BTS Dec · 16.3 min · 2,182 recorded · 2,170 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 · 2,020 · 2,020 recorded · 2,003 measured · Source: the US BTS Feb · 1,927 · 1,927 recorded · 1,897 measured · Source: the US BTS Mar · 2,169 · 2,169 recorded · 2,135 measured · Source: the US BTS Apr · 2,070 · 2,070 recorded · 2,064 measured · Source: the US BTS May · 2,457 · 2,457 recorded · 2,439 measured · Source: the US BTS Jun · 2,527 · 2,527 recorded · 2,510 measured · Source: the US BTS Jul · 2,610 · 2,610 recorded · 2,574 measured · Source: the US BTS Aug · 1,239 · 1,239 recorded · 1,231 measured · Source: the US BTS Sep · 1,169 · 1,169 recorded · 1,162 measured · Source: the US BTS Oct · 1,943 · 1,943 recorded · 1,922 measured · Source: the US BTS Nov · 2,227 · 2,227 recorded · 2,187 measured · Source: the US BTS Dec · 2,182 · 2,182 recorded · 2,170 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan82.5%9.8 min2,0032,020
Feb78.1%13.6 min1,8971,927
Mar80.4%11.5 min2,1352,169
Apr76.4%11.6 min2,0642,070
May70.3%14.7 min2,4392,457
Jun65.1%18.7 min2,5102,527
Jul65.6%19.7 min2,5742,610
Aug77.7%13.2 min1,2311,239
Sep81.8%6.7 min1,1621,169
Oct81.3%7.6 min1,9221,943
Nov79.8%10.7 min2,1872,227
Dec73.5%16.3 min2,1702,182

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 74.5% 18,275
  • Delayed >15 min 24.5% 6,019
  • Cancelled 1.0% 246
  • 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

201
201 of 201
Flight numbersBy direction DeparturesOn time
UA737 SEA → SFO 620 73.4%
OO3707 SFO → SEA 476 76.3%
UA2019 SFO → SEA 474 82.1%
OO3707 SEA → SFO 470 83.3%
DL2721 SFO → SEA 458 95.1%
DL2635 SEA → SFO 449 73.4%
DL1412 SFO → SEA 400 73.5%
DL1412 SEA → SFO 400 69.7%
AS1284 SEA → SFO 349 66.8%
OO3991 SEA → SFO 346 75.9%
OO3991 SFO → SEA 346 73.3%
AS1225 SFO → SEA 340 69.6%
AS1140 SEA → SFO 312 64.8%
AS1166 SEA → SFO 306 76.8%
AS1327 SFO → SEA 302 74.0%
AS1318 SEA → SFO 300 72.2%
AS591 SFO → SEA 274 68.3%
AS655 SEA → SFO 274 63.9%
AS725 SEA → SFO 268 57.6%
UA1482 SEA → SFO 268 72.7%
AS758 SFO → SEA 266 74.7%
UA2279 SFO → SEA 265 76.6%
AS590 SEA → SFO 252 56.1%
AS680 SEA → SFO 249 75.6%
AS1132 SEA → SFO 244 68.3%
UA1007 SFO → SEA 243 70.3%
UA2482 SEA → SFO 234 85.0%
AS1385 SEA → SFO 233 71.3%
AS580 SFO → SEA 223 78.1%
AS528 SEA → SFO 219 58.1%
AS1078 SFO → SEA 215 68.7%
AS1304 SEA → SFO 212 76.4%
AS1059 SFO → SEA 211 67.8%
AS688 SEA → SFO 209 59.1%
AS656 SFO → SEA 207 57.5%
AS1043 SFO → SEA 204 93.0%
AS1289 SFO → SEA 198 79.1%
UA433 SFO → SEA 197 87.6%
UA2603 SFO → SEA 192 81.7%
UA573 SFO → SEA 188 85.6%
AS1014 SEA → SFO 184 65.4%
AS1340 SFO → SEA 183 65.9%
AS1123 SFO → SEA 182 91.2%
UA1620 SEA → SFO 173 82.0%
OO5676 SEA → SFO 153 92.8%
AS1050 SEA → SFO 147 65.3%
AS1169 SFO → SEA 144 86.5%
OO3636 SEA → SFO 144 87.3%
OO3636 SFO → SEA 144 85.2%
AS68 SFO → SEA 142 94.3%
AS1082 SEA → SFO 137 79.6%
OO5579 SFO → SEA 136 62.2%
AS971 SFO → SEA 134 82.0%
UA1403 SEA → SFO 133 77.9%
AS1065 SFO → SEA 132 55.4%
OO3720 SFO → SEA 132 80.8%
OO3720 SEA → SFO 132 80.0%
UA1008 SFO → SEA 131 81.7%
AS1112 SEA → SFO 125 62.4%
UA2340 SFO → SEA 122 89.3%
UA2640 SEA → SFO 121 86.8%
AS1075 SFO → SEA 118 68.4%
UA2866 SEA → SFO 110 60.0%
AS416 SFO → SEA 104 96.1%
DL2809 SFO → SEA 102 96.1%
OO3339 SFO → SEA 101 78.0%
UA1577 SFO → SEA 101 69.3%
UA325 SEA → SFO 101 82.0%
AS1013 SFO → SEA 95 98.9%
AS981 SFO → SEA 93 95.7%
AS922 SFO → SEA 92 76.4%
AS411 SEA → SFO 90 57.8%
UA2315 SFO → SEA 87 83.7%
UA1470 SEA → SFO 83 81.7%
DL1012 SEA → SFO 82 70.7%
UA2744 SFO → SEA 79 76.9%
AS158 SEA → SFO 78 64.1%
AS1324 SEA → SFO 77 81.8%
AS316 SFO → SEA 77 70.1%
UA589 SEA → SFO 77 80.5%
AS1342 SFO → SEA 74 78.4%
AS626 SFO → SEA 74 77.1%
AS980 SEA → SFO 74 54.8%
UA1424 SEA → SFO 73 77.8%
UA2831 SEA → SFO 72 45.7%
UA499 SEA → SFO 72 62.0%
UA1417 SFO → SEA 71 84.5%
UA1954 SEA → SFO 71 97.2%
UA1960 SEA → SFO 71 76.8%
UA1971 SFO → SEA 71 72.9%
AS720 SFO → SEA 70 75.7%
UA1969 SFO → SEA 70 91.4%
UA2462 SFO → SEA 70 60.0%
AS1309 SEA → SFO 66 68.2%
OO3369 SEA → SFO 66 74.2%
UA343 SFO → SEA 66 87.9%
UA1914 SEA → SFO 65 76.9%
DL672 SFO → SEA 62 96.8%
DL673 SEA → SFO 62 69.4%
DL673 SFO → SEA 62 75.8%
DL675 SEA → SFO 62 83.9%
DL976 SFO → SEA 62 81.0%
DL976 SEA → SFO 62 75.9%
AS1471 SFO → SEA 61 52.5%
UA1708 SFO → SEA 60 90.0%
UA2192 SFO → SEA 60 33.9%
UA1265 SFO → SEA 58 63.8%
UA1374 SEA → SFO 56 89.3%
DL2870 SEA → SFO 55 38.2%
DL2870 SFO → SEA 55 40.0%
DL353 SFO → SEA 55 70.9%
DL353 SEA → SFO 55 74.6%
UA2367 SFO → SEA 54 83.0%
UA714 SEA → SFO 54 77.8%
UA1763 SFO → SEA 53 73.6%
UA1777 SFO → SEA 53 92.5%
UA2121 SEA → SFO 53 32.7%
UA2650 SFO → SEA 53 77.4%
UA706 SEA → SFO 53 92.3%
UA757 SFO → SEA 53 77.4%
AS153 SFO → SEA 52 75.0%
AS630 SFO → SEA 52 40.4%
UA297 SEA → SFO 52 86.5%
AS619 SEA → SFO 51 43.1%
AS620 SFO → SEA 51 98.0%
AS628 SEA → SFO 51 27.5%
AS790 SFO → SEA 51 84.3%
AS791 SEA → SFO 51 44.0%
DL2636 SFO → SEA 51 81.6%
DL2636 SEA → SFO 51 81.6%
UA1152 SEA → SFO 51 82.0%
UA1372 SEA → SFO 50 87.5%
AS1476 SFO → SEA 49 87.8%
AS592 SFO → SEA 49 65.3%
UA2293 SFO → SEA 49 95.9%
OO4082 SFO → SEA 48 91.7%
OO4082 SEA → SFO 48 95.8%
AS1475 SEA → SFO 46 30.2%
UA608 SEA → SFO 46 100.0%
UA1498 SFO → SEA 45 75.6%
AS1113 SFO → SEA 43 83.7%
UA436 SEA → SFO 43 81.4%
AS1025 SFO → SEA 42 92.7%
OO3414 SEA → SFO 41 85.4%
OO5346 SFO → SEA 41 97.5%
AS578 SFO → SEA 38 86.8%
OO3601 SEA → SFO 38 81.6%
OO3603 SFO → SEA 38 64.9%
OO3604 SFO → SEA 38 76.3%
OO3604 SEA → SFO 38 71.1%
UA1387 SFO → SEA 38 92.1%
UA1116 SEA → SFO 37 67.6%
UA1603 SFO → SEA 37 86.5%
UA1777 SEA → SFO 37 79.4%
UA2041 SFO → SEA 37 97.3%
UA2241 SEA → SFO 37 36.1%
UA2339 SFO → SEA 37 86.5%
UA593 SFO → SEA 37 86.5%
DL1699 SFO → SEA 36 94.4%
DL308 SEA → SFO 36 66.7%
DL770 SFO → SEA 36 88.9%
DL770 SEA → SFO 36 80.6%
OO3601 SFO → SEA 36 88.9%
OO3602 SFO → SEA 36 66.7%
OO3602 SEA → SFO 36 66.7%
OO3603 SEA → SFO 36 68.6%
OO3814 SFO → SEA 36 77.1%
OO3814 SEA → SFO 36 80.6%
UA2432 SFO → SEA 36 88.9%
AS1319 SFO → SEA 35 79.4%
AS1489 SFO → SEA 35 48.6%
AS383 SEA → SFO 35 54.3%
OO5917 SFO → SEA 35 85.7%
OO5969 SEA → SFO 35 85.7%
UA1578 SEA → SFO 35 25.7%
UA1944 SEA → SFO 35 57.1%
UA2400 SFO → SEA 35 74.3%
UA2837 SEA → SFO 35 45.7%
DL2841 SEA → SFO 34 51.5%
DL2841 SFO → SEA 34 42.4%
OO3899 SEA → SFO 34 67.7%
OO3899 SFO → SEA 34 61.8%
UA1102 SEA → SFO 34 82.4%
UA684 SFO → SEA 34 85.3%
AS1016 SEA → SFO 32 68.8%
DL396 SEA → SFO 32 75.0%
DL396 SFO → SEA 32 68.8%
OO3997 SEA → SFO 32 100.0%
OO3997 SFO → SEA 32 100.0%
UA1351 SFO → SEA 32 96.9%
UA1597 SFO → SEA 32 90.6%
UA204 SEA → SFO 32 78.1%
DL794 SFO → SEA 31 45.2%
DL794 SEA → SFO 31 38.7%
UA1330 SEA → SFO 31 83.9%
UA1509 SEA → SFO 31 80.7%
OO3841 SEA → SFO 30 93.3%
OO3841 SFO → SEA 30 86.7%
UA1218 SFO → SEA 30 76.7%
UA1395 SEA → SFO 30 66.7%
UA2632 SEA → SFO 30 63.3%

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 1,321 +5.4% 11 55.8%
June 2026 1,257 +0.3% 9 54.4%
May 2026 1,172 −7.5% 13 59.4%
April 2026 991 −7.6% 0 68.6%
March 2026 1,027 −7.3% 29 83.1%
February 2026 952 +0.7% 9 80.5%
January 2026 956 −8.7% 15 78.5%
December 2025 1,109 +4.5% 8 72.1%
November 2025 1,107 +2.5% 25 79.6%
October 2025 1,156 +50.9% 13 78.4%
September 2025 1,162 7 81.8%
August 2025 1,231 8 77.7%
July 2025 1,253 25 75.9%
June 2025 1,253 8 75.9%
May 2025 1,267 5 80.4%
April 2025 1,073 6 83.6%
March 2025 1,108 5 77.9%
February 2025 945 21 75.8%
January 2025 1,047 2 86.2%
December 2024 1,061 4 74.9%
November 2024 1,080 15 80.0%
October 2024 766 8 85.8%

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