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3,883 km · Domestic

Washington Dulles (IAD) – San Francisco (SFO)

In July 2026, 418 flights operated between Washington Dulles and San Francisco (both directions), and 74.4% 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
January378400▲ 5.8%
February348378▲ 8.6%
March454409▼ 9.9%
April570459▼ 19.5%
May544536▼ 1.5%
June550467▼ 15.1%
July529418▼ 21.0%
August503––
September412––
October490–in progress
November456––
December490––
Year to date (Jan–Jul)3,3733,067▼ 9.1%

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
January83.6%79.5%▼ 4.9%
February83.3%83.6%▲ 0.4%
March84.6%87.3%▲ 3.2%
April88.9%83.9%▼ 5.6%
May80.9%78.7%▼ 2.7%
June74.2%72.2%▼ 2.7%
July66.2%74.4%▲ 12.4%
August81.9%––
September87.4%––
October85.5%–in progress
November86.0%––
December76.3%––
Year-to-date average (Jan–Jul)80.2%79.9%▼ 0.4%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January518▲ 260.0%
February00–
March19▲ 800.0%
April21▼ 50.0%
May20▼ 100.0%
June01–
July50▼ 100.0%
August6––
September0––
October3–in progress
November3––
December0––
Year to date (Jan–Jul)1529▲ 93.3%

Airlines on this route

  1. United Airlines 93.0%
  2. Alaska Airlines 7.0%

Oct 1, 2024 – Jul 31, 2026

By direction

IAD → SFO

Scheduled flights
5,111
Flights operated
5,076
Cancelled
35 · 0.7%
On-time departures
80.3%

SFO → IAD

Scheduled flights
5,114
Flights operated
5,088
Cancelled
26 · 0.5%
On-time departures
81.8%

IAD → SFO and SFO → IAD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 9,508 93.0% 81.7% 56
Alaska Airlines AS 717 7.0% 72.3% 5

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 delay06:00–07:001.2min · 887 recorded · 885 measured
Gap to highest-delay hour41.3min06:00 ↔ 17:00
Recorded flights10,225IAD–SFO

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · Fewer than 200 measured departures · 54 recorded · 54 measured · Source: the US BTS 01:00 · Fewer than 200 measured departures · 1 recorded · 1 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% · 887 recorded · 885 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 160 recorded · 158 measured · Source: the US BTS 08:00 · 86.0% · 1,475 recorded · 1,460 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 167 recorded · 166 measured · Source: the US BTS 10:00 · 84.8% · 310 recorded · 310 measured · Source: the US BTS 11:00 · 75.9% · 445 recorded · 444 measured · Source: the US BTS 12:00 · 82.1% · 891 recorded · 886 measured · Source: the US BTS 13:00 · 77.7% · 594 recorded · 592 measured · Source: the US BTS 14:00 · 81.9% · 537 recorded · 535 measured · Source: the US BTS 15:00 · 77.6% · 228 recorded · 228 measured · Source: the US BTS 16:00 · 81.6% · 943 recorded · 938 measured · Source: the US BTS 17:00 · 56.2% · 320 recorded · 315 measured · Source: the US BTS 18:00 · 69.2% · 514 recorded · 506 measured · Source: the US BTS 19:00 · 71.4% · 242 recorded · 241 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 79 recorded · 79 measured · Source: the US BTS 21:00 · 84.7% · 682 recorded · 679 measured · Source: the US BTS 22:00 · 78.2% · 1,168 recorded · 1,163 measured · Source: the US BTS 23:00 · 79.6% · 528 recorded · 524 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 · Fewer than 200 measured departures · 54 recorded · 54 measured · Source: the US BTS 01:00 · Fewer than 200 measured departures · 1 recorded · 1 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 · 1.2 min · 887 recorded · 885 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 160 recorded · 158 measured · Source: the US BTS 08:00 · 10.0 min · 1,475 recorded · 1,460 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 167 recorded · 166 measured · Source: the US BTS 10:00 · 12.4 min · 310 recorded · 310 measured · Source: the US BTS 11:00 · 14.5 min · 445 recorded · 444 measured · Source: the US BTS 12:00 · 12.2 min · 891 recorded · 886 measured · Source: the US BTS 13:00 · 15.6 min · 594 recorded · 592 measured · Source: the US BTS 14:00 · 10.3 min · 537 recorded · 535 measured · Source: the US BTS 15:00 · 14.4 min · 228 recorded · 228 measured · Source: the US BTS 16:00 · 10.6 min · 943 recorded · 938 measured · Source: the US BTS 17:00 · 42.5 min · 320 recorded · 315 measured · Source: the US BTS 18:00 · 22.6 min · 514 recorded · 506 measured · Source: the US BTS 19:00 · 17.6 min · 242 recorded · 241 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 79 recorded · 79 measured · Source: the US BTS 21:00 · 6.4 min · 682 recorded · 679 measured · Source: the US BTS 22:00 · 10.2 min · 1,168 recorded · 1,163 measured · Source: the US BTS 23:00 · 12.5 min · 528 recorded · 524 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 · 54 · 54 recorded · 54 measured · Source: the US BTS 01:00 · 1 · 1 recorded · 1 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 · 887 · 887 recorded · 885 measured · Source: the US BTS 07:00 · 160 · 160 recorded · 158 measured · Source: the US BTS 08:00 · 1,475 · 1,475 recorded · 1,460 measured · Source: the US BTS 09:00 · 167 · 167 recorded · 166 measured · Source: the US BTS 10:00 · 310 · 310 recorded · 310 measured · Source: the US BTS 11:00 · 445 · 445 recorded · 444 measured · Source: the US BTS 12:00 · 891 · 891 recorded · 886 measured · Source: the US BTS 13:00 · 594 · 594 recorded · 592 measured · Source: the US BTS 14:00 · 537 · 537 recorded · 535 measured · Source: the US BTS 15:00 · 228 · 228 recorded · 228 measured · Source: the US BTS 16:00 · 943 · 943 recorded · 938 measured · Source: the US BTS 17:00 · 320 · 320 recorded · 315 measured · Source: the US BTS 18:00 · 514 · 514 recorded · 506 measured · Source: the US BTS 19:00 · 242 · 242 recorded · 241 measured · Source: the US BTS 20:00 · 79 · 79 recorded · 79 measured · Source: the US BTS 21:00 · 682 · 682 recorded · 679 measured · Source: the US BTS 22:00 · 1,168 · 1,168 recorded · 1,163 measured · Source: the US BTS 23:00 · 528 · 528 recorded · 524 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00Fewer than 200 measured departures—5454
01:00Fewer than 200 measured departures—11
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:0094.1%1.2 min885887
07:00Fewer than 200 measured departures—158160
08:0086.0%10.0 min1,4601,475
09:00Fewer than 200 measured departures—166167
10:0084.8%12.4 min310310
11:0075.9%14.5 min444445
12:0082.1%12.2 min886891
13:0077.7%15.6 min592594
14:0081.9%10.3 min535537
15:0077.6%14.4 min228228
16:0081.6%10.6 min938943
17:0056.2%42.5 min315320
18:0069.2%22.6 min506514
19:0071.4%17.6 min241242
20:00Fewer than 200 measured departures—7979
21:0084.7%6.4 min679682
22:0078.2%10.2 min1,1631,168
23:0079.6%12.5 min524528

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 79.2% · 1,502 recorded · 1,491 measured · Source: the US BTS Tuesday · 86.0% · 1,377 recorded · 1,376 measured · Source: the US BTS Wednesday · 83.4% · 1,430 recorded · 1,426 measured · Source: the US BTS Thursday · 80.9% · 1,497 recorded · 1,492 measured · Source: the US BTS Friday · 79.6% · 1,507 recorded · 1,502 measured · Source: the US BTS Saturday · 79.8% · 1,395 recorded · 1,389 measured · Source: the US BTS Sunday · 78.8% · 1,517 recorded · 1,488 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 · 13.4 min · 1,502 recorded · 1,491 measured · Source: the US BTS Tuesday · 8.7 min · 1,377 recorded · 1,376 measured · Source: the US BTS Wednesday · 9.8 min · 1,430 recorded · 1,426 measured · Source: the US BTS Thursday · 11.8 min · 1,497 recorded · 1,492 measured · Source: the US BTS Friday · 11.9 min · 1,507 recorded · 1,502 measured · Source: the US BTS Saturday · 13.5 min · 1,395 recorded · 1,389 measured · Source: the US BTS Sunday · 12.7 min · 1,517 recorded · 1,488 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 · 1,502 · 1,502 recorded · 1,491 measured · Source: the US BTS Tuesday · 1,377 · 1,377 recorded · 1,376 measured · Source: the US BTS Wednesday · 1,430 · 1,430 recorded · 1,426 measured · Source: the US BTS Thursday · 1,497 · 1,497 recorded · 1,492 measured · Source: the US BTS Friday · 1,507 · 1,507 recorded · 1,502 measured · Source: the US BTS Saturday · 1,395 · 1,395 recorded · 1,389 measured · Source: the US BTS Sunday · 1,517 · 1,517 recorded · 1,488 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday79.2%13.4 min1,4911,502
Tuesday86.0%8.7 min1,3761,377
Wednesday83.4%9.8 min1,4261,430
Thursday80.9%11.8 min1,4921,497
Friday79.6%11.9 min1,5021,507
Saturday79.8%13.5 min1,3891,395
Sunday78.8%12.7 min1,4881,517

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 · 81.5% · 801 recorded · 778 measured · Source: the US BTS Feb · 83.5% · 726 recorded · 726 measured · Source: the US BTS Mar · 85.9% · 873 recorded · 863 measured · Source: the US BTS Apr · 86.7% · 1,032 recorded · 1,029 measured · Source: the US BTS May · 79.8% · 1,082 recorded · 1,080 measured · Source: the US BTS Jun · 73.3% · 1,018 recorded · 1,017 measured · Source: the US BTS Jul · 69.8% · 952 recorded · 947 measured · Source: the US BTS Aug · 81.9% · 509 recorded · 503 measured · Source: the US BTS Sep · 87.4% · 412 recorded · 412 measured · Source: the US BTS Oct · 87.1% · 836 recorded · 832 measured · Source: the US BTS Nov · 84.8% · 974 recorded · 969 measured · Source: the US BTS Dec · 76.9% · 1,010 recorded · 1,008 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 · 11.9 min · 801 recorded · 778 measured · Source: the US BTS Feb · 10.9 min · 726 recorded · 726 measured · Source: the US BTS Mar · 9.0 min · 873 recorded · 863 measured · Source: the US BTS Apr · 6.0 min · 1,032 recorded · 1,029 measured · Source: the US BTS May · 11.5 min · 1,082 recorded · 1,080 measured · Source: the US BTS Jun · 18.1 min · 1,018 recorded · 1,017 measured · Source: the US BTS Jul · 22.0 min · 952 recorded · 947 measured · Source: the US BTS Aug · 11.6 min · 509 recorded · 503 measured · Source: the US BTS Sep · 5.5 min · 412 recorded · 412 measured · Source: the US BTS Oct · 6.0 min · 836 recorded · 832 measured · Source: the US BTS Nov · 8.9 min · 974 recorded · 969 measured · Source: the US BTS Dec · 14.6 min · 1,010 recorded · 1,008 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 · 801 · 801 recorded · 778 measured · Source: the US BTS Feb · 726 · 726 recorded · 726 measured · Source: the US BTS Mar · 873 · 873 recorded · 863 measured · Source: the US BTS Apr · 1,032 · 1,032 recorded · 1,029 measured · Source: the US BTS May · 1,082 · 1,082 recorded · 1,080 measured · Source: the US BTS Jun · 1,018 · 1,018 recorded · 1,017 measured · Source: the US BTS Jul · 952 · 952 recorded · 947 measured · Source: the US BTS Aug · 509 · 509 recorded · 503 measured · Source: the US BTS Sep · 412 · 412 recorded · 412 measured · Source: the US BTS Oct · 836 · 836 recorded · 832 measured · Source: the US BTS Nov · 974 · 974 recorded · 969 measured · Source: the US BTS Dec · 1,010 · 1,010 recorded · 1,008 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan81.5%11.9 min778801
Feb83.5%10.9 min726726
Mar85.9%9.0 min863873
Apr86.7%6.0 min1,0291,032
May79.8%11.5 min1,0801,082
Jun73.3%18.1 min1,0171,018
Jul69.8%22.0 min947952
Aug81.9%11.6 min503509
Sep87.4%5.5 min412412
Oct87.1%6.0 min832836
Nov84.8%8.9 min969974
Dec76.9%14.6 min1,0081,010

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 80.5% 8,235
  • Delayed >15 min 18.9% 1,929
  • Cancelled 0.6% 61
  • 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

78
78 of 78
Flight numbersBy direction DeparturesOn time
UA1849 SFO → IAD 658 86.8%
UA1757 IAD → SFO 600 61.6%
UA1095 IAD → SFO 599 92.0%
UA2862 IAD → SFO 489 79.9%
UA367 IAD → SFO 438 78.2%
UA1870 SFO → IAD 367 79.3%
UA1434 IAD → SFO 310 79.3%
UA1453 SFO → IAD 285 78.2%
UA2110 SFO → IAD 236 91.5%
AS434 SFO → IAD 228 72.4%
UA796 IAD → SFO 213 85.3%
UA1322 SFO → IAD 211 98.1%
UA336 SFO → IAD 207 78.6%
AS435 IAD → SFO 206 73.7%
UA1147 IAD → SFO 205 88.7%
UA717 SFO → IAD 201 85.6%
UA1702 IAD → SFO 196 83.9%
UA1355 SFO → IAD 182 89.0%
UA1116 IAD → SFO 169 86.4%
UA1129 IAD → SFO 145 74.3%
UA2228 IAD → SFO 126 83.3%
AS458 IAD → SFO 120 72.0%
AS455 SFO → IAD 110 67.0%
UA1385 SFO → IAD 110 67.0%
UA2111 SFO → IAD 102 71.6%
UA755 SFO → IAD 101 78.2%
UA1791 SFO → IAD 93 80.7%
UA2071 IAD → SFO 90 93.3%
UA1786 IAD → SFO 88 90.9%
UA2142 IAD → SFO 88 76.1%
UA1986 SFO → IAD 80 77.2%
UA2409 SFO → IAD 78 87.2%
UA635 IAD → SFO 73 89.0%
UA1140 SFO → IAD 72 98.6%
UA208 SFO → IAD 72 81.9%
UA2837 SFO → IAD 72 52.8%
UA357 SFO → IAD 72 54.2%
UA2247 SFO → IAD 71 83.1%
UA2351 SFO → IAD 68 94.1%
UA1083 SFO → IAD 66 80.3%
UA2075 IAD → SFO 64 60.9%
UA1318 IAD → SFO 63 82.3%
UA2480 SFO → IAD 56 75.0%
UA1940 IAD → SFO 54 90.7%
UA2027 SFO → IAD 53 81.1%
UA2162 SFO → IAD 53 71.7%
UA2650 SFO → IAD 53 81.1%
UA450 SFO → IAD 53 92.3%
UA1893 SFO → IAD 46 87.0%
UA1392 IAD → SFO 39 79.5%
UA1126 IAD → SFO 37 86.5%
UA1164 SFO → IAD 37 86.5%
UA1354 SFO → IAD 37 64.9%
UA1372 SFO → IAD 37 75.7%
UA2032 IAD → SFO 37 94.3%
UA2165 SFO → IAD 37 75.7%
UA233 SFO → IAD 37 97.1%
UA562 SFO → IAD 37 83.8%
UA769 IAD → SFO 37 68.6%
UA2305 SFO → IAD 36 77.8%
UA375 SFO → IAD 36 75.0%
UA2274 SFO → IAD 35 68.6%
UA1738 SFO → IAD 34 67.7%
UA2250 IAD → SFO 34 67.7%
AS727 IAD → SFO 33 84.4%
UA1992 IAD → SFO 33 78.8%
UA315 IAD → SFO 33 97.0%
UA2117 SFO → IAD 32 78.1%
UA2496 IAD → SFO 32 96.9%
UA2626 SFO → IAD 32 78.1%
UA1288 SFO → IAD 31 87.1%
UA1997 SFO → IAD 31 76.7%
UA2241 SFO → IAD 31 100.0%
UA2321 SFO → IAD 31 90.3%
UA1141 SFO → IAD 30 86.7%
UA2136 IAD → SFO 30 93.3%
UA2693 IAD → SFO 30 100.0%
UA626 SFO → IAD 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 418 −21.0% 0 74.4%
June 2026 467 −15.1% 1 72.2%
May 2026 536 −1.5% 0 78.7%
April 2026 459 −19.5% 1 83.9%
March 2026 409 −9.9% 9 87.3%
February 2026 378 +8.6% 0 83.6%
January 2026 400 +5.8% 18 79.5%
December 2025 490 −5.4% 0 76.3%
November 2025 456 −11.1% 3 86.0%
October 2025 490 +43.3% 3 85.5%
September 2025 412 0 87.4%
August 2025 503 6 81.9%
July 2025 529 5 66.2%
June 2025 550 0 74.2%
May 2025 544 2 80.9%
April 2025 570 2 88.9%
March 2025 454 1 84.6%
February 2025 348 0 83.3%
January 2025 378 5 83.6%
December 2024 518 2 77.4%
November 2024 513 2 83.8%
October 2024 342 1 89.5%

How to read this chart

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