PlainFlights

SLC vs LWS - 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
LWS

Lewiston, ID

Lewiston, Idaho

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Key Performance Metrics

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

Metric SLC LWS
On-Time Rate (higher is better) 85.8% 89.7%
Avg Delay (lower is better) 76.0 min 101.2 min
Delay Rate (lower is better) 14.2% 10.3%
Cancellation Rate (lower is better) 0.57% 0.36%
Total Flights 1,319,985 10,808
Delayed Flights 186,884 1,112
Cancelled Flights 7,511 39
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%

LWS - Lewiston, ID

Carrier 66.1%
Weather 20.3%
Late Aircraft 10.0%
NAS 3.4%
Security 0.2%

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 LWS

Route Flights On-Time
LWS → SLC
Salt Lake City
3,268 90.9%
SLC → LWS
Lewiston
3,267 90.9%
DEN → LWS
Lewiston
1,103 85.2%
LWS → DEN
Denver
1,103 83.7%
LWS → SEA
Seattle
734 88.1%
SEA → LWS
Lewiston
734 88.8%

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.