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Route · SJC → SLC · 2020–2025 BTS data

San Jose to Salt Lake City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SJC to SLC (San Jose to Salt Lake City) ranks #1051 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

90.3%
On-time
+11.3 pts
vs US avg
86 min
Delay when late
10,893
Flights
#1051 of 4927
Corpus placement

Cancelled

0.4%

Best Month

Feb 2024 96%

Worst Month

Jun 2024 86%

Distance

584 mi

Carriers

10

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 137 9 2 0 DL,WN,OO
Nov 2025 155 10 3 0 OO,DL,WN
Oct 2025 168 13 0 0 OO,WN,DL
Sep 2025 158 12 0 0 WN,OO,DL
Aug 2025 166 12 1 0 OO,WN,DL
Jul 2025 176 18 0 0 DL,OO,WN
Jun 2025 172 18 1 0 DL,OO,WN
May 2025 166 14 0 0 DL,OO,WN
Apr 2025 139 11 0 0 DL,OO,WN
Mar 2025 146 11 0 0 DL,OO,WN
Feb 2025 123 10 0 0 WN,DL
Jan 2025 130 6 0 0 OO,WN,DL
Dec 2024 138 11 0 0 DL,OO,WN
Nov 2024 154 13 0 0 OO,WN,DL
Oct 2024 166 12 0 0 OO,DL,WN
Sep 2024 162 9 0 1 WN,OO,DL
Aug 2024 164 18 0 0 DL,WN,OO
Jul 2024 168 16 6 0 DL,OO,WN
Jun 2024 161 22 0 0 DL,OO,WN
May 2024 146 15 0 0 DL,OO,WN
Apr 2024 142 12 0 0 DL,OO,WN
Mar 2024 149 14 0 0 DL,OO,WN
Feb 2024 136 6 0 0 DL,OO,WN
Jan 2024 150 20 0 0 DL,WN,OO

SJC–SLC seasonal on-time pattern

Best: September (92.7%) · weakest: June (87.8%)

86%88%90%92%94% JanFebMarAprMayJunJulAugSepOctNovDec 89.4%

Strongest calendar month

September

92.7% on-time · ~159 flights/mo

Busiest calendar month

October

~162 flights/mo avg

Weakest calendar month

June

87.8% on-time · ~151 flights/mo

Cancellation Rate

0.4%

13 of 3,672 flights

Diversion Rate

0.0%

1 of 3,672 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

SJC - San Jose

Full on-time, delay-cause, and seasonal performance for San Jose, CA.

SJC on-time profile

SLC - Salt Lake City

Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.

SLC on-time profile

Compare the two airports

See SJC and SLC side by side on delays, cancellations, and reliability.

Compare SJC vs SLC

Origin-hub reliability standing

Among SJC's stronger departures

SJC → SLC posts a 90.3% on-time rate, landing in the ≥85% band with 21 of 31 BTS-tracked routes leaving San Jose. The same hub also shows 9 mid-band and 1 challenged departures · fleet-wide on-time rank #131 of 4927 (highest on-time = #1).

What the Data Says About SJC to SLC

San Jose to Salt Lake City (SJC to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 90.3% on-time rate across 10,893 flights, with delays that do happen averaging 85.5 minutes. The corridor runs roughly 584 miles and is served by 10 carriers. Over the most recent 24 months, 13 of 3,672 flights were cancelled (0.4%) and 1 diverted (0.0%).

Monthly performance varies moderately here: Feb 2024 was the strongest month at 96% on-time versus Jun 2024 at 86%, a 9-point difference.

On the multi-year calendar, SJC–SLC peaks in September at 92.7% on-time while October carries the heaviest traffic (~162 flights per month) ; the softest month is June at 87.8%, a 4.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SJC to SLC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SJC to SLC ranks #1051 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from SJC to SLC? ▼
Flights from San Jose to Salt Lake City have a 90.3% on-time rate based on 10,893 flights. The average delay is 85.5 minutes. The best recent month was Feb 2024 with 96% on-time.
What is the cancellation rate for SJC to SLC? ▼
Over the last 24 months, 0.4% of flights on this route were cancelled (13 of 3,672 flights) and 0.0% were diverted.
How far is the flight from SJC to SLC? ▼
The flight distance from San Jose (SJC) to Salt Lake City (SLC) is approximately 584 miles. This route is served by 10 carriers.
When is the best time to fly from SJC to SLC? ▼
The best recent month for on-time performance was Feb 2024 (96% on-time). The worst was Jun 2024 (86% on-time). Consider booking during months with historically better performance.

Airports on this route

SJC Airport

San Jose
SLC Airport

Salt Lake City
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using SJC–SLC data

SJC–SLC runs 11.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SJC and SLC airport profiles: delay causes and top routes differ even on the same corridor. SJC airport
  • If your dates flex, September (92.7% on-time) beats June (87.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 90.3% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.