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Route · SLC → PSC · 2020–2025 BTS data

Salt Lake City to Pasco/Kennewick/Richland

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SLC to PSC (Salt Lake City to Pasco/Kennewick/Richland) ranks #1987 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

88.8%
On-time
+9.8 pts
vs US avg
74 min
Delay when late
6,337
Flights
#1987 of 4927
Corpus placement

Cancelled

0.2%

Best Month

Mar 2024 95%

Worst Month

Jan 2024 63%

Distance

521 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 90 10 0 0 DL,OO
Nov 2025 88 9 1 1 OO,DL
Oct 2025 92 7 0 0 OO,DL
Sep 2025 92 5 0 0 OO,DL
Aug 2025 120 11 0 0 OO,DL
Jul 2025 122 20 0 0 OO,DL
Jun 2025 119 8 1 0 OO,DL
May 2025 113 10 0 0 OO,DL
Apr 2025 90 9 0 0 DL,OO
Mar 2025 91 10 0 0 OO,DL
Feb 2025 80 17 0 1 OO
Jan 2025 88 10 0 0 OO
Dec 2024 90 16 0 2 OO
Nov 2024 88 7 0 0 OO,DL
Oct 2024 92 10 0 1 OO,DL
Sep 2024 88 7 0 0 OO,DL
Aug 2024 92 17 0 0 DL,OO
Jul 2024 91 19 0 0 DL,OO
Jun 2024 89 20 0 0 DL,OO
May 2024 88 10 0 0 OO
Apr 2024 86 11 0 0 OO
Mar 2024 88 4 0 0 OO
Feb 2024 78 7 0 0 OO
Jan 2024 87 32 2 2 OO

SLC–PSC seasonal on-time pattern

Best: September (93.1%) · weakest: January (81.3%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 83.2%

Strongest calendar month

September

93.1% on-time · ~87 flights/mo

Busiest calendar month

July

~97 flights/mo avg

Weakest calendar month

January

81.3% on-time · ~87 flights/mo

Cancellation Rate

0.2%

4 of 2,242 flights

Diversion Rate

0.3%

7 of 2,242 flights

Explore origin & destination

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

SLC - Salt Lake City

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

SLC on-time profile

PSC - Pasco/Kennewick/Richland

Full on-time, delay-cause, and seasonal performance for Pasco/Kennewick/Richland, WA.

PSC on-time profile

Compare the two airports

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

Compare SLC vs PSC

Origin-hub reliability standing

Among SLC's stronger departures

SLC → PSC posts a 88.8% on-time rate, landing in the ≥85% band with 54 of 85 BTS-tracked routes leaving Salt Lake City. The same hub also shows 31 mid-band and 0 challenged departures · fleet-wide on-time rank #285 of 4927 (highest on-time = #1).

What the Data Says About SLC to PSC

Salt Lake City to Pasco/Kennewick/Richland (SLC to PSC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.8% on-time rate across 6,337 flights, with delays that do happen averaging 73.5 minutes. The corridor runs roughly 521 miles and is served by 3 carriers. Over the most recent 24 months, 4 of 2,242 flights were cancelled (0.2%) and 7 diverted (0.3%).

The monthly split is wide on this route: Mar 2024 posted the strongest performance at 95% on-time, while Jan 2024 came in at just 63% - a 32-point swing worth factoring into travel timing.

On the multi-year calendar, SLC–PSC peaks in September at 93.1% on-time while July carries the heaviest traffic (~97 flights per month) ; the softest month is January at 81.3%, a 11.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SLC to PSC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SLC to PSC ranks #1987 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 SLC to PSC? ▼
Flights from Salt Lake City to Pasco/Kennewick/Richland have a 88.8% on-time rate based on 6,337 flights. The average delay is 73.5 minutes. The best recent month was Mar 2024 with 95% on-time.
What is the cancellation rate for SLC to PSC? ▼
Over the last 24 months, 0.2% of flights on this route were cancelled (4 of 2,242 flights) and 0.3% were diverted.
How far is the flight from SLC to PSC? ▼
The flight distance from Salt Lake City (SLC) to Pasco/Kennewick/Richland (PSC) is approximately 521 miles. This route is served by 3 carriers.
When is the best time to fly from SLC to PSC? ▼
The best recent month for on-time performance was Mar 2024 (95% on-time). The worst was Jan 2024 (63% on-time). Consider booking during months with historically better performance.

Airports on this route

SLC Airport

Salt Lake City
PSC Airport

Pasco/Kennewick/Richland
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 SLC–PSC data

SLC–PSC runs 9.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare SLC and PSC airport profiles: delay causes and top routes differ even on the same corridor. SLC airport
  • If your dates flex, September (93.1% on-time) beats January (81.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 88.8% 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.