PlainFlights

SLC vs SUN - 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
SLC

Salt Lake City, UT

Salt Lake City, Utah

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Airport B
SUN

Sun Valley/Hailey/Ketchum, ID

Sun Valley/Hailey/Ketchum, Idaho

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Key Performance Metrics

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

Metric SLC SUN
On-Time Rate (higher is better) 85.8% 88.6%
Avg Delay (lower is better) 76.0 min 95.5 min
Delay Rate (lower is better) 14.2% 11.4%
Cancellation Rate (lower is better) 0.57% 1.43%
Total Flights 1,319,985 22,928
Delayed Flights 186,884 2,622
Cancelled Flights 7,511 328
Top Delay Cause Carrier Carrier

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

Delay Cause Breakdown

SLC - Salt Lake City, UT

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

SUN - Sun Valley/Hailey/Ketchum, ID

Carrier 45.0%
Weather 24.1%
Late Aircraft 15.6%
NAS 15.2%
Security 0.1%

Top Routes

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%

Top routes from SUN

Route Flights On-Time
SUN → SLC
Salt Lake City
5,319 91.7%
SLC → SUN
Sun Valley/Hailey/Ketchum
5,318 91.9%
DEN → SUN
Sun Valley/Hailey/Ketchum
2,224 83.1%
SUN → DEN
Denver
2,223 83.1%
SUN → LAX
Los Angeles
927 88.3%
LAX → SUN
Sun Valley/Hailey/Ketchum
926 86.5%

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.