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3,785 km · Domestic

Washington Dulles (IAD) – Sacramento (SMF)

In July 2026, 60 flights operated between Washington Dulles and Sacramento (both directions), and 78.3% 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
January6059▼ 1.7%
February56560.0%
March62620.0%
April60600.0%
May6260▼ 3.2%
June6056▼ 6.7%
July6260▼ 3.2%
August62––
September60––
October62–in progress
November60––
December62––
Year to date (Jan–Jul)422413▼ 2.1%

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
January80.0%91.5%▲ 14.4%
February85.7%94.6%▲ 10.4%
March88.7%91.9%▲ 3.6%
April88.3%98.3%▲ 11.3%
May91.9%90.0%▼ 2.1%
June80.0%85.7%▲ 7.1%
July66.1%78.3%▲ 18.5%
August85.5%––
September95.0%––
October88.7%–in progress
November91.7%––
December80.6%––
Year-to-date average (Jan–Jul)83.0%90.0%▲ 8.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January23▲ 50.0%
February00–
March00–
April00–
May02–
June04–
July02–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)211▲ 450.0%

By direction

IAD → SMF

Scheduled flights
658
Flights operated
652
Cancelled
6 · 0.9%
On-time departures
80.4%

SMF → IAD

Scheduled flights
659
Flights operated
652
Cancelled
7 · 1.1%
On-time departures
95.2%

IAD → SMF and SMF → IAD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 1,317 100.0% 87.8% 13

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 delay08:00–09:00-2.5min · 490 recorded · 486 measured
Gap to highest-delay hour13.6min08:00 ↔ 17:00
Recorded flights1,317IAD–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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 130 recorded · 128 measured · Source: the US BTS 08:00 · 95.5% · 490 recorded · 486 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 83.6% · 439 recorded · 433 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 96 recorded · 96 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 123 recorded · 123 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 39 recorded · 38 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 130 recorded · 128 measured · Source: the US BTS 08:00 · -2.5 min · 490 recorded · 486 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 11.1 min · 439 recorded · 433 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 96 recorded · 96 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 123 recorded · 123 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 39 recorded · 38 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · 130 · 130 recorded · 128 measured · Source: the US BTS 08:00 · 490 · 490 recorded · 486 measured · Source: the US BTS 09:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · 439 · 439 recorded · 433 measured · Source: the US BTS 18:00 · 96 · 96 recorded · 96 measured · Source: the US BTS 19:00 · 123 · 123 recorded · 123 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · 39 · 39 recorded · 38 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———
05:00No observations———
06:00No observations———
07:00Fewer than 200 measured departures—128130
08:0095.5%-2.5 min486490
09:00No observations———
10:00No observations———
11:00No observations———
12:00No observations———
13:00No observations———
14:00No observations———
15:00No observations———
16:00No observations———
17:0083.6%11.1 min433439
18:00Fewer than 200 measured departures—9696
19:00Fewer than 200 measured departures—123123
20:00No observations———
21:00No observations———
22:00No observations———
23:00Fewer than 200 measured departures—3839

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 188 · 188 recorded · 185 measured · Source: the US BTS Tuesday · 188 · 188 recorded · 188 measured · Source: the US BTS Wednesday · 189 · 189 recorded · 188 measured · Source: the US BTS Thursday · 188 · 188 recorded · 186 measured · Source: the US BTS Friday · 188 · 188 recorded · 187 measured · Source: the US BTS Saturday · 188 · 188 recorded · 188 measured · Source: the US BTS Sunday · 188 · 188 recorded · 182 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—185188
TuesdayFewer than 200 measured departures—188188
WednesdayFewer than 200 measured departures—188189
ThursdayFewer than 200 measured departures—186188
FridayFewer than 200 measured departures—187188
SaturdayFewer than 200 measured departures—188188
SundayFewer than 200 measured departures—182188

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 124 · 124 recorded · 119 measured · Source: the US BTS Feb · 112 · 112 recorded · 112 measured · Source: the US BTS Mar · 124 · 124 recorded · 124 measured · Source: the US BTS Apr · 120 · 120 recorded · 120 measured · Source: the US BTS May · 124 · 124 recorded · 122 measured · Source: the US BTS Jun · 120 · 120 recorded · 116 measured · Source: the US BTS Jul · 124 · 124 recorded · 122 measured · Source: the US BTS Aug · 62 · 62 recorded · 62 measured · Source: the US BTS Sep · 60 · 60 recorded · 60 measured · Source: the US BTS Oct · 102 · 102 recorded · 102 measured · Source: the US BTS Nov · 120 · 120 recorded · 120 measured · Source: the US BTS Dec · 125 · 125 recorded · 125 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—119124
FebFewer than 200 measured departures—112112
MarFewer than 200 measured departures—124124
AprFewer than 200 measured departures—120120
MayFewer than 200 measured departures—122124
JunFewer than 200 measured departures—116120
JulFewer than 200 measured departures—122124
AugFewer than 200 measured departures—6262
SepFewer than 200 measured departures—6060
OctFewer than 200 measured departures—102102
NovFewer than 200 measured departures—120120
DecFewer than 200 measured departures—125125

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 86.9% 1,145
  • Delayed >15 min 12.1% 159
  • Cancelled 1.0% 13
  • 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
UA2435 IAD → SMF 547 78.9%
UA2264 SMF → IAD 175 97.7%
UA1742 SMF → IAD 125 95.9%
UA1273 SMF → IAD 88 93.2%
UA2497 SMF → IAD 53 88.7%
UA393 SMF → IAD 52 98.1%
UA2268 SMF → IAD 45 100.0%
UA1205 IAD → SMF 37 83.8%
UA1322 SMF → IAD 37 97.1%
UA776 IAD → SMF 37 97.3%

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 60 −3.2% 2 78.3%
June 2026 56 −6.7% 4 85.7%
May 2026 60 −3.2% 2 90.0%
April 2026 60 +0.0% 0 98.3%
March 2026 62 +0.0% 0 91.9%
February 2026 56 +0.0% 0 94.6%
January 2026 59 −1.7% 3 91.5%
December 2025 62 −1.6% 0 80.6%
November 2025 60 +0.0% 0 91.7%
October 2025 62 +55.0% 0 88.7%
September 2025 60 0 95.0%
August 2025 62 0 85.5%
July 2025 62 0 66.1%
June 2025 60 0 80.0%
May 2025 62 0 91.9%
April 2025 60 0 88.3%
March 2025 62 0 88.7%
February 2025 56 0 85.7%
January 2025 60 2 80.0%
December 2024 63 0 88.9%
November 2024 60 0 96.7%
October 2024 40 0 97.5%

How to read this chart

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