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2,860 km · Domestic

Chicago O'Hare (ORD) – Sacramento (SMF)

In July 2026, 270 flights operated between Chicago O'Hare and Sacramento (both directions), and 73.7% 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
January147134▼ 8.8%
February1121120.0%
March128220▲ 71.9%
April234292▲ 24.8%
May248301▲ 21.4%
June238268▲ 12.6%
July245270▲ 10.2%
August241––
September234––
October246–in progress
November176––
December150––
Year to date (Jan–Jul)1,3521,597▲ 18.1%

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
January87.1%74.6%▼ 14.4%
February87.5%88.4%▲ 1.0%
March82.0%70.9%▼ 13.5%
April83.8%74.0%▼ 11.7%
May83.5%81.4%▼ 2.5%
June80.7%69.0%▼ 14.5%
July56.7%73.7%▲ 30.0%
August71.8%––
September84.2%––
October82.5%–in progress
November79.0%––
December73.3%––
Year-to-date average (Jan–Jul)80.2%76.0%▼ 5.2%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January00–
February00–
March06–
April07–
May02–
June26▲ 200.0%
July112▲ 1,100.0%
August0––
September0––
October1–in progress
November6––
December0––
Year to date (Jan–Jul)333▲ 1,000.0%

Airlines on this route

  1. United Airlines 77.2%
  2. American Airlines 22.8%

Oct 1, 2024 – Jul 31, 2026

By direction

ORD → SMF

Scheduled flights
2,265
Flights operated
2,243
Cancelled
22 · 1.0%
On-time departures
73.2%

SMF → ORD

Scheduled flights
2,265
Flights operated
2,244
Cancelled
21 · 0.9%
On-time departures
83.2%

ORD → SMF and SMF → ORD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
United Airlines UA 3,499 77.2% 80.9% 28
American Airlines AA 1,031 22.8% 69.0% 15

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 delay07:00–08:000.5min · 598 recorded · 593 measured
Gap to highest-delay hour28.0min07:00 ↔ 19:00
Recorded flights4,530ORD–SMF

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 · 66 recorded · 65 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 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 07:00 · 93.3% · 598 recorded · 593 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 196 recorded · 194 measured · Source: the US BTS 09:00 · 87.3% · 677 recorded · 676 measured · Source: the US BTS 10:00 · 90.6% · 341 recorded · 341 measured · Source: the US BTS 11:00 · 73.0% · 317 recorded · 315 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 58 recorded · 58 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 14:00 · 81.8% · 412 recorded · 411 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 157 recorded · 155 measured · Source: the US BTS 16:00 · 75.3% · 518 recorded · 514 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 62.6% · 275 recorded · 267 measured · Source: the US BTS 20:00 · 59.1% · 398 recorded · 394 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 54 recorded · 50 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 23:00 · 73.3% · 455 recorded · 446 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 · 66 recorded · 65 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 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 07:00 · 0.5 min · 598 recorded · 593 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 196 recorded · 194 measured · Source: the US BTS 09:00 · 5.5 min · 677 recorded · 676 measured · Source: the US BTS 10:00 · 3.9 min · 341 recorded · 341 measured · Source: the US BTS 11:00 · 19.6 min · 317 recorded · 315 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 58 recorded · 58 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 14:00 · 14.0 min · 412 recorded · 411 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 157 recorded · 155 measured · Source: the US BTS 16:00 · 19.4 min · 518 recorded · 514 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 28.5 min · 275 recorded · 267 measured · Source: the US BTS 20:00 · 25.2 min · 398 recorded · 394 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 54 recorded · 50 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 23:00 · 19.2 min · 455 recorded · 446 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 · 66 · 66 recorded · 65 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 recorded · 2 measured · Source: the US BTS 07:00 · 598 · 598 recorded · 593 measured · Source: the US BTS 08:00 · 196 · 196 recorded · 194 measured · Source: the US BTS 09:00 · 677 · 677 recorded · 676 measured · Source: the US BTS 10:00 · 341 · 341 recorded · 341 measured · Source: the US BTS 11:00 · 317 · 317 recorded · 315 measured · Source: the US BTS 12:00 · 58 · 58 recorded · 58 measured · Source: the US BTS 13:00 · 3 · 3 recorded · 3 measured · Source: the US BTS 14:00 · 412 · 412 recorded · 411 measured · Source: the US BTS 15:00 · 157 · 157 recorded · 155 measured · Source: the US BTS 16:00 · 518 · 518 recorded · 514 measured · Source: the US BTS 17:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 275 · 275 recorded · 267 measured · Source: the US BTS 20:00 · 398 · 398 recorded · 394 measured · Source: the US BTS 21:00 · 54 · 54 recorded · 50 measured · Source: the US BTS 22:00 · 2 · 2 recorded · 2 measured · Source: the US BTS 23:00 · 455 · 455 recorded · 446 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—6566
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:00Fewer than 200 measured departures—22
07:0093.3%0.5 min593598
08:00Fewer than 200 measured departures—194196
09:0087.3%5.5 min676677
10:0090.6%3.9 min341341
11:0073.0%19.6 min315317
12:00Fewer than 200 measured departures—5858
13:00Fewer than 200 measured departures—33
14:0081.8%14.0 min411412
15:00Fewer than 200 measured departures—155157
16:0075.3%19.4 min514518
17:00Fewer than 200 measured departures—11
18:00No observations———
19:0062.6%28.5 min267275
20:0059.1%25.2 min394398
21:00Fewer than 200 measured departures—5054
22:00Fewer than 200 measured departures—22
23:0073.3%19.2 min446455

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 80.1% · 665 recorded · 658 measured · Source: the US BTS Tuesday · 82.0% · 621 recorded · 616 measured · Source: the US BTS Wednesday · 77.0% · 625 recorded · 622 measured · Source: the US BTS Thursday · 77.9% · 654 recorded · 646 measured · Source: the US BTS Friday · 75.7% · 657 recorded · 649 measured · Source: the US BTS Saturday · 78.5% · 635 recorded · 628 measured · Source: the US BTS Sunday · 76.5% · 673 recorded · 668 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 · 19.2 min · 665 recorded · 658 measured · Source: the US BTS Tuesday · 9.0 min · 621 recorded · 616 measured · Source: the US BTS Wednesday · 17.6 min · 625 recorded · 622 measured · Source: the US BTS Thursday · 11.0 min · 654 recorded · 646 measured · Source: the US BTS Friday · 19.4 min · 657 recorded · 649 measured · Source: the US BTS Saturday · 11.8 min · 635 recorded · 628 measured · Source: the US BTS Sunday · 19.2 min · 673 recorded · 668 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 665 · 665 recorded · 658 measured · Source: the US BTS Tuesday · 621 · 621 recorded · 616 measured · Source: the US BTS Wednesday · 625 · 625 recorded · 622 measured · Source: the US BTS Thursday · 654 · 654 recorded · 646 measured · Source: the US BTS Friday · 657 · 657 recorded · 649 measured · Source: the US BTS Saturday · 635 · 635 recorded · 628 measured · Source: the US BTS Sunday · 673 · 673 recorded · 668 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.1%19.2 min658665
Tuesday82.0%9.0 min616621
Wednesday77.0%17.6 min622625
Thursday77.9%11.0 min646654
Friday75.7%19.4 min649657
Saturday78.5%11.8 min628635
Sunday76.5%19.2 min668673

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 · 81.1% · 281 recorded · 281 measured · Source: the US BTS Feb · 88.0% · 224 recorded · 224 measured · Source: the US BTS Mar · 75.0% · 354 recorded · 348 measured · Source: the US BTS Apr · 78.3% · 533 recorded · 526 measured · Source: the US BTS May · 82.3% · 551 recorded · 549 measured · Source: the US BTS Jun · 74.5% · 514 recorded · 506 measured · Source: the US BTS Jul · 65.6% · 528 recorded · 515 measured · Source: the US BTS Aug · 71.8% · 241 recorded · 241 measured · Source: the US BTS Sep · 84.2% · 234 recorded · 234 measured · Source: the US BTS Oct · 85.5% · 387 recorded · 386 measured · Source: the US BTS Nov · 85.4% · 356 recorded · 350 measured · Source: the US BTS Dec · 74.9% · 327 recorded · 327 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 · 10.4 min · 281 recorded · 281 measured · Source: the US BTS Feb · 5.7 min · 224 recorded · 224 measured · Source: the US BTS Mar · 18.9 min · 354 recorded · 348 measured · Source: the US BTS Apr · 13.7 min · 533 recorded · 526 measured · Source: the US BTS May · 10.6 min · 551 recorded · 549 measured · Source: the US BTS Jun · 18.5 min · 514 recorded · 506 measured · Source: the US BTS Jul · 24.9 min · 528 recorded · 515 measured · Source: the US BTS Aug · 22.8 min · 241 recorded · 241 measured · Source: the US BTS Sep · 7.5 min · 234 recorded · 234 measured · Source: the US BTS Oct · 8.4 min · 387 recorded · 386 measured · Source: the US BTS Nov · 8.0 min · 356 recorded · 350 measured · Source: the US BTS Dec · 30.0 min · 327 recorded · 327 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 · 281 · 281 recorded · 281 measured · Source: the US BTS Feb · 224 · 224 recorded · 224 measured · Source: the US BTS Mar · 354 · 354 recorded · 348 measured · Source: the US BTS Apr · 533 · 533 recorded · 526 measured · Source: the US BTS May · 551 · 551 recorded · 549 measured · Source: the US BTS Jun · 514 · 514 recorded · 506 measured · Source: the US BTS Jul · 528 · 528 recorded · 515 measured · Source: the US BTS Aug · 241 · 241 recorded · 241 measured · Source: the US BTS Sep · 234 · 234 recorded · 234 measured · Source: the US BTS Oct · 387 · 387 recorded · 386 measured · Source: the US BTS Nov · 356 · 356 recorded · 350 measured · Source: the US BTS Dec · 327 · 327 recorded · 327 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan81.1%10.4 min281281
Feb88.0%5.7 min224224
Mar75.0%18.9 min348354
Apr78.3%13.7 min526533
May82.3%10.6 min549551
Jun74.5%18.5 min506514
Jul65.6%24.9 min515528
Aug71.8%22.8 min241241
Sep84.2%7.5 min234234
Oct85.5%8.4 min386387
Nov85.4%8.0 min350356
Dec74.9%30.0 min327327

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 77.5% 3,509
  • Delayed >15 min 21.6% 978
  • Cancelled 0.9% 43
  • 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

46
46 of 46
Flight numbersBy direction DeparturesOn time
UA1328 ORD → SMF 272 87.1%
UA2145 ORD → SMF 258 83.0%
UA1920 ORD → SMF 248 72.1%
UA1828 ORD → SMF 235 65.9%
UA1278 SMF → ORD 218 88.8%
UA2437 SMF → ORD 183 61.5%
UA1710 ORD → SMF 172 52.9%
UA1148 SMF → ORD 149 84.0%
AA1710 ORD → SMF 147 67.1%
UA2658 ORD → SMF 142 71.8%
UA1082 SMF → ORD 126 94.4%
UA2370 SMF → ORD 125 90.1%
UA2207 SMF → ORD 124 96.0%
AA3085 SMF → ORD 120 68.9%
UA2274 SMF → ORD 114 86.0%
UA1301 SMF → ORD 98 93.9%
UA1398 ORD → SMF 91 76.9%
UA633 SMF → ORD 89 95.5%
UA2184 ORD → SMF 81 88.9%
UA587 SMF → ORD 77 92.2%
UA2635 SMF → ORD 68 95.6%
AA2371 ORD → SMF 64 87.5%
AA2627 SMF → ORD 61 58.3%
AA2627 ORD → SMF 61 68.9%
UA2419 SMF → ORD 61 90.2%
UA2665 SMF → ORD 54 81.5%
UA1851 ORD → SMF 53 86.8%
AA1094 ORD → SMF 52 49.0%
AA3060 SMF → ORD 52 88.2%
UA1634 ORD → SMF 46 78.3%
AA2446 ORD → SMF 44 44.2%
AA2898 SMF → ORD 44 84.1%
AA2033 SMF → ORD 43 66.7%
UA2242 ORD → SMF 37 91.9%
UA2243 SMF → ORD 37 83.8%
UA2766 SMF → ORD 36 72.2%
UA1850 SMF → ORD 35 82.9%
UA2614 SMF → ORD 35 91.4%
AA3244 SMF → ORD 33 84.9%
UA1946 SMF → ORD 32 87.5%
AA2371 SMF → ORD 31 77.4%
UA230 ORD → SMF 31 51.6%
AA2898 ORD → SMF 30 76.7%
AA3042 ORD → SMF 30 25.0%
AA902 SMF → ORD 30 55.2%
AA903 ORD → SMF 30 65.5%

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 270 +10.2% 12 73.7%
June 2026 268 +12.6% 6 69.0%
May 2026 301 +21.4% 2 81.4%
April 2026 292 +24.8% 7 74.0%
March 2026 220 +71.9% 6 70.9%
February 2026 112 +0.0% 0 88.4%
January 2026 134 −8.8% 0 74.6%
December 2025 150 −15.3% 0 73.3%
November 2025 176 +1.1% 6 79.0%
October 2025 246 +75.7% 1 82.5%
September 2025 234 0 84.2%
August 2025 241 0 71.8%
July 2025 245 1 56.7%
June 2025 238 2 80.7%
May 2025 248 0 83.5%
April 2025 234 0 83.8%
March 2025 128 0 82.0%
February 2025 112 0 87.5%
January 2025 147 0 87.1%
December 2024 177 0 76.3%
November 2024 174 0 92.0%
October 2024 140 0 90.7%

How to read this chart

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