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898 km · Domestic

Ontario (ONT) – Salt Lake City (SLC)

In July 2026, 232 flights operated between Ontario and Salt Lake City (both directions), and 88.4% 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
January194180▼ 7.2%
February162178▲ 9.9%
March182179▼ 1.6%
April180198▲ 10.0%
May226228▲ 0.9%
June2262260.0%
July2322320.0%
August234––
September220––
October230–in progress
November170––
December180––
Year to date (Jan–Jul)1,4021,421▲ 1.4%

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
January89.7%85.6%▼ 4.6%
February87.0%87.1%▲ 0.1%
March89.6%88.8%▼ 0.9%
April93.9%88.9%▼ 5.3%
May92.5%93.9%▲ 1.5%
June87.6%92.9%▲ 6.1%
July89.2%88.4%▼ 0.9%
August92.3%––
September91.4%––
October93.9%–in progress
November92.9%––
December84.4%––
Year-to-date average (Jan–Jul)89.9%89.4%▼ 0.6%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January04–
February00–
March09–
April00–
May02–
June20▼ 100.0%
July00–
August2––
September0––
October0–in progress
November6––
December0––
Year to date (Jan–Jul)215▲ 650.0%

Airlines on this route

  1. Delta Air Lines 71.4%
  2. SkyWest Airlines 26.5%
  3. Frontier Airlines 2.1%

Oct 1, 2024 – Jul 31, 2026

By direction

ONT → SLC

Scheduled flights
2,182
Flights operated
2,170
Cancelled
12 · 0.5%
On-time departures
91.9%

SLC → ONT

Scheduled flights
2,182
Flights operated
2,169
Cancelled
13 · 0.6%
On-time departures
89.0%

ONT → SLC and SLC → ONT counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Delta Air Lines DL 3,116 71.4% 89.2% 22
SkyWest Airlines OO 1,156 26.5% 93.8% 2
Frontier Airlines F9 92 2.1% 90.1% 1

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 delay09:00–10:00-3.6min · 204 recorded · 202 measured
Gap to highest-delay hour13.2min09:00 ↔ 22:00
Recorded flights4,364ONT–SLC

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 · Fewer than 200 measured departures · 18 recorded · 18 measured · Source: the US BTS 06:00 · 94.4% · 640 recorded · 638 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 95.0% · 221 recorded · 219 measured · Source: the US BTS 09:00 · 95.1% · 204 recorded · 202 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: the US BTS 11:00 · 87.1% · 657 recorded · 653 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 7 recorded · 6 measured · Source: the US BTS 13:00 · 87.0% · 664 recorded · 660 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · 92.1% · 614 recorded · 610 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 192 recorded · 191 measured · Source: the US BTS 17:00 · 93.4% · 439 recorded · 436 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 14 recorded · 14 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 36 recorded · 36 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 113 recorded · 113 measured · Source: the US BTS 22:00 · 85.3% · 402 recorded · 400 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 109 recorded · 109 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 · Fewer than 200 measured departures · 18 recorded · 18 measured · Source: the US BTS 06:00 · -0.3 min · 640 recorded · 638 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · -2.4 min · 221 recorded · 219 measured · Source: the US BTS 09:00 · -3.6 min · 204 recorded · 202 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: the US BTS 11:00 · 4.4 min · 657 recorded · 653 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 7 recorded · 6 measured · Source: the US BTS 13:00 · 4.8 min · 664 recorded · 660 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · 0.7 min · 614 recorded · 610 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 192 recorded · 191 measured · Source: the US BTS 17:00 · -1.3 min · 439 recorded · 436 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 14 recorded · 14 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 36 recorded · 36 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 113 recorded · 113 measured · Source: the US BTS 22:00 · 9.7 min · 402 recorded · 400 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 109 recorded · 109 measured · Source: the US BTS

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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 · 18 · 18 recorded · 18 measured · Source: the US BTS 06:00 · 640 · 640 recorded · 638 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 221 · 221 recorded · 219 measured · Source: the US BTS 09:00 · 204 · 204 recorded · 202 measured · Source: the US BTS 10:00 · 33 · 33 recorded · 33 measured · Source: the US BTS 11:00 · 657 · 657 recorded · 653 measured · Source: the US BTS 12:00 · 7 · 7 recorded · 6 measured · Source: the US BTS 13:00 · 664 · 664 recorded · 660 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · 614 · 614 recorded · 610 measured · Source: the US BTS 16:00 · 192 · 192 recorded · 191 measured · Source: the US BTS 17:00 · 439 · 439 recorded · 436 measured · Source: the US BTS 18:00 · 14 · 14 recorded · 14 measured · Source: the US BTS 19:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 20:00 · 36 · 36 recorded · 36 measured · Source: the US BTS 21:00 · 113 · 113 recorded · 113 measured · Source: the US BTS 22:00 · 402 · 402 recorded · 400 measured · Source: the US BTS 23:00 · 109 · 109 recorded · 109 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———
05:00Fewer than 200 measured departures—1818
06:0094.4%-0.3 min638640
07:00No observations———
08:0095.0%-2.4 min219221
09:0095.1%-3.6 min202204
10:00Fewer than 200 measured departures—3333
11:0087.1%4.4 min653657
12:00Fewer than 200 measured departures—67
13:0087.0%4.8 min660664
14:00No observations———
15:0092.1%0.7 min610614
16:00Fewer than 200 measured departures—191192
17:0093.4%-1.3 min436439
18:00Fewer than 200 measured departures—1414
19:00Fewer than 200 measured departures—11
20:00Fewer than 200 measured departures—3636
21:00Fewer than 200 measured departures—113113
22:0085.3%9.7 min400402
23:00Fewer than 200 measured departures—109109

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 89.9% · 644 recorded · 636 measured · Source: the US BTS Tuesday · 92.4% · 624 recorded · 622 measured · Source: the US BTS Wednesday · 92.1% · 622 recorded · 622 measured · Source: the US BTS Thursday · 89.8% · 658 recorded · 656 measured · Source: the US BTS Friday · 91.2% · 644 recorded · 644 measured · Source: the US BTS Saturday · 89.8% · 526 recorded · 518 measured · Source: the US BTS Sunday · 88.0% · 646 recorded · 641 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 · 0.8 min · 644 recorded · 636 measured · Source: the US BTS Tuesday · -0.5 min · 624 recorded · 622 measured · Source: the US BTS Wednesday · 0.2 min · 622 recorded · 622 measured · Source: the US BTS Thursday · 5.2 min · 658 recorded · 656 measured · Source: the US BTS Friday · 2.2 min · 644 recorded · 644 measured · Source: the US BTS Saturday · 2.7 min · 526 recorded · 518 measured · Source: the US BTS Sunday · 3.4 min · 646 recorded · 641 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 · 644 · 644 recorded · 636 measured · Source: the US BTS Tuesday · 624 · 624 recorded · 622 measured · Source: the US BTS Wednesday · 622 · 622 recorded · 622 measured · Source: the US BTS Thursday · 658 · 658 recorded · 656 measured · Source: the US BTS Friday · 644 · 644 recorded · 644 measured · Source: the US BTS Saturday · 526 · 526 recorded · 518 measured · Source: the US BTS Sunday · 646 · 646 recorded · 641 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday89.9%0.8 min636644
Tuesday92.4%-0.5 min622624
Wednesday92.1%0.2 min622622
Thursday89.8%5.2 min656658
Friday91.2%2.2 min644644
Saturday89.8%2.7 min518526
Sunday88.0%3.4 min641646

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 · 87.7% · 378 recorded · 374 measured · Source: the US BTS Feb · 87.1% · 340 recorded · 340 measured · Source: the US BTS Mar · 89.2% · 370 recorded · 361 measured · Source: the US BTS Apr · 91.3% · 378 recorded · 378 measured · Source: the US BTS May · 93.2% · 456 recorded · 454 measured · Source: the US BTS Jun · 90.3% · 454 recorded · 452 measured · Source: the US BTS Jul · 88.8% · 464 recorded · 464 measured · Source: the US BTS Aug · 92.3% · 236 recorded · 234 measured · Source: the US BTS Sep · 91.4% · 220 recorded · 220 measured · Source: the US BTS Oct · 94.3% · 348 recorded · 348 measured · Source: the US BTS Nov · 94.5% · 352 recorded · 346 measured · Source: the US BTS Dec · 86.7% · 368 recorded · 368 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 · 4.2 min · 378 recorded · 374 measured · Source: the US BTS Feb · 6.3 min · 340 recorded · 340 measured · Source: the US BTS Mar · 1.5 min · 370 recorded · 361 measured · Source: the US BTS Apr · -1.3 min · 378 recorded · 378 measured · Source: the US BTS May · -1.8 min · 456 recorded · 454 measured · Source: the US BTS Jun · 0.9 min · 454 recorded · 452 measured · Source: the US BTS Jul · 5.6 min · 464 recorded · 464 measured · Source: the US BTS Aug · -1.6 min · 236 recorded · 234 measured · Source: the US BTS Sep · 5.1 min · 220 recorded · 220 measured · Source: the US BTS Oct · -0.8 min · 348 recorded · 348 measured · Source: the US BTS Nov · -2.1 min · 352 recorded · 346 measured · Source: the US BTS Dec · 8.2 min · 368 recorded · 368 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 · 378 · 378 recorded · 374 measured · Source: the US BTS Feb · 340 · 340 recorded · 340 measured · Source: the US BTS Mar · 370 · 370 recorded · 361 measured · Source: the US BTS Apr · 378 · 378 recorded · 378 measured · Source: the US BTS May · 456 · 456 recorded · 454 measured · Source: the US BTS Jun · 454 · 454 recorded · 452 measured · Source: the US BTS Jul · 464 · 464 recorded · 464 measured · Source: the US BTS Aug · 236 · 236 recorded · 234 measured · Source: the US BTS Sep · 220 · 220 recorded · 220 measured · Source: the US BTS Oct · 348 · 348 recorded · 348 measured · Source: the US BTS Nov · 352 · 352 recorded · 346 measured · Source: the US BTS Dec · 368 · 368 recorded · 368 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan87.7%4.2 min374378
Feb87.1%6.3 min340340
Mar89.2%1.5 min361370
Apr91.3%-1.3 min378378
May93.2%-1.8 min454456
Jun90.3%0.9 min452454
Jul88.8%5.6 min464464
Aug92.3%-1.6 min234236
Sep91.4%5.1 min220220
Oct94.3%-0.8 min348348
Nov94.5%-2.1 min346352
Dec86.7%8.2 min368368

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 89.9% 3,925
  • Delayed >15 min 9.5% 414
  • Cancelled 0.6% 25
  • 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

32
32 of 32
Flight numbersBy direction DeparturesOn time
DL1614 SLC → ONT 556 84.8%
DL2708 ONT → SLC 500 94.6%
DL1345 SLC → ONT 326 88.9%
DL1345 ONT → SLC 319 91.2%
OO3933 SLC → ONT 220 94.6%
OO3933 ONT → SLC 220 97.3%
OO3757 SLC → ONT 172 93.6%
OO3757 ONT → SLC 172 94.2%
DL1340 ONT → SLC 158 93.7%
DL1786 ONT → SLC 145 86.2%
DL1786 SLC → ONT 138 89.9%
DL475 ONT → SLC 122 80.8%
DL475 SLC → ONT 122 79.2%
DL1719 SLC → ONT 102 90.2%
DL1302 SLC → ONT 66 96.9%
DL1302 ONT → SLC 66 95.4%
DL1224 SLC → ONT 57 87.3%
DL1224 ONT → SLC 57 87.3%
DL3172 ONT → SLC 55 89.1%
DL3172 SLC → ONT 55 96.4%
OO4443 ONT → SLC 55 85.5%
OO4443 SLC → ONT 55 87.3%
DL1896 ONT → SLC 46 86.4%
DL1896 SLC → ONT 46 86.4%
OO3829 ONT → SLC 36 94.4%
OO3829 SLC → ONT 36 91.7%
F991122 ONT → SLC 34 85.3%
DL1006 ONT → SLC 31 93.6%
DL1006 SLC → ONT 31 87.1%
OO3762 ONT → SLC 31 96.8%
OO3762 SLC → ONT 31 96.8%
F991121 SLC → ONT 30 93.1%

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 232 +0.0% 0 88.4%
June 2026 226 +0.0% 0 92.9%
May 2026 228 +0.9% 2 93.9%
April 2026 198 +10.0% 0 88.9%
March 2026 179 −1.6% 9 88.8%
February 2026 178 +9.9% 0 87.1%
January 2026 180 −7.2% 4 85.6%
December 2025 180 −4.3% 0 84.4%
November 2025 170 −3.4% 6 92.9%
October 2025 230 +94.9% 0 93.9%
September 2025 220 0 91.4%
August 2025 234 2 92.3%
July 2025 232 0 89.2%
June 2025 226 2 87.6%
May 2025 226 0 92.5%
April 2025 180 0 93.9%
March 2025 182 0 89.6%
February 2025 162 0 87.0%
January 2025 194 0 89.7%
December 2024 188 0 88.8%
November 2024 176 0 96.0%
October 2024 118 0 94.9%

How to read this chart

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