PlainFlights

SJC vs SLC - Airport Comparison

Select two airports to compare on-time performance, delays, cancellations, and top routes using U.S. Department of Transportation Bureau of Transportation Statistics (BTS) data (2020–2025) across all 50 states. See our methodology for how metrics are computed.

Airport A
SJC

San Jose, CA

San Jose, California

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Airport B
SLC

Salt Lake City, UT

Salt Lake City, Utah

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Key Performance Metrics

BTS on-time performance data, 2020–2025 cumulative.

Metric SJC SLC
On-Time Rate (higher is better) 84.2% 85.8%
Avg Delay (lower is better) 59.8 min 76.0 min
Delay Rate (lower is better) 15.8% 14.2%
Cancellation Rate (lower is better) 0.99% 0.57%
Total Flights 546,547 1,319,985
Delayed Flights 86,586 186,884
Cancelled Flights 5,418 7,511
Top Delay Cause Late Aircraft Carrier

✓ / ▲ indicates the more favorable value. Data: BTS On-Time Performance, 2020–2025.

Delay Cause Breakdown

SJC - San Jose, CA

Late Aircraft 46.2%
Carrier 34.8%
NAS 16.4%
Weather 2.4%
Security 0.2%

SLC - Salt Lake City, UT

Carrier 50.6%
Late Aircraft 25.1%
NAS 16.2%
Weather 8.1%
Security 0.1%

Top Routes

Top routes from SJC

Route Flights On-Time
SJC → SAN
San Diego
31,755 82.2%
SAN → SJC
San Jose
31,496 82%
LAX → SJC
San Jose
30,318 87.3%
SJC → LAX
Los Angeles
30,152 88.4%
SEA → SJC
San Jose
26,361 85%
SJC → SEA
Seattle
26,343 86.4%

Top routes from SLC

Route Flights On-Time
DEN → SLC
Salt Lake City
43,089 78.3%
SLC → DEN
Denver
43,051 78.8%
SLC → PHX
Phoenix
30,395 83.2%
PHX → SLC
Salt Lake City
30,355 84.5%
LAX → SLC
Salt Lake City
27,163 87.1%
SLC → LAX
Los Angeles
27,094 84.2%

Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) On-time rates exclude cancelled and diverted flights. PlainFlights is not affiliated with BTS or the DOT

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This tool queries live on-time, delay, and cancellation figures for the two selected airports from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.