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Route · CPR → SLC · 2020–2025 BTS data

Casper to Salt Lake City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CPR to SLC (Casper to Salt Lake City) ranks #3675 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

90.1%
On-time
+11.1 pts
vs US avg
99 min
Delay when late
2,234
Flights
#3675 of 4927
Corpus placement

Cancelled

0.5%

Best Month

Nov 2022 85%

Worst Month

Dec 2022 79%

Distance

320 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Nov 2024 31 4 0 0 OO
Oct 2024 31 4 0 0 OO
Sep 2024 30 0 0 0 OO
Aug 2024 31 3 0 0 OO
Jul 2024 31 1 0 0 OO
Jun 2024 30 4 0 0 OO
May 2024 31 0 0 0 OO
Apr 2024 30 0 0 0 OO
Mar 2024 31 2 0 0 OO
Jan 2024 31 4 0 0 OO
Dec 2023 31 3 0 0 OO
Nov 2023 30 4 0 0 OO
Oct 2023 31 5 0 0 OO
Sep 2023 30 2 0 0 OO
Aug 2023 31 3 0 0 OO
Jul 2023 31 3 0 0 OO
Jun 2023 30 0 0 0 OO
May 2023 31 0 0 0 OO
Apr 2023 30 0 3 0 OO
Mar 2023 31 2 0 0 OO
Jan 2023 37 10 1 1 OO
Dec 2022 56 12 0 0 OO
Nov 2022 55 8 0 0 OO
Oct 2022 31 0 0 0 OO

CPR–SLC seasonal on-time pattern

Best: May (98.7%) · weakest: December (83.8%)

80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 83.8%

Strongest calendar month

May

98.7% on-time · ~39 flights/mo

Busiest calendar month

February

~57 flights/mo avg

Weakest calendar month

December

83.8% on-time · ~48 flights/mo

Cancellation Rate

0.5%

4 of 792 flights

Diversion Rate

0.1%

1 of 792 flights

Explore origin & destination

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

CPR - Casper

Full on-time, delay-cause, and seasonal performance for Casper, WY.

CPR 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 CPR and SLC side by side on delays, cancellations, and reliability.

Compare CPR vs SLC

Origin-hub reliability standing

Among CPR's stronger departures

CPR → SLC posts a 90.1% on-time rate, landing in the ≥85% band with 1 of 2 BTS-tracked routes leaving Casper. The same hub also shows 1 mid-band and 0 challenged departures · fleet-wide on-time rank #142 of 4927 (highest on-time = #1).

What the Data Says About CPR to SLC

Casper to Salt Lake City (CPR to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 90.1% on-time rate across 2,234 flights, with delays that do happen averaging 99.3 minutes. The corridor runs roughly 320 miles and is served by 1 carrier. Over the most recent 24 months, 4 of 792 flights were cancelled (0.5%) and 1 diverted (0.1%).

Monthly performance varies moderately here: Nov 2022 was the strongest month at 85% on-time versus Dec 2022 at 79%, a 7-point difference.

On the multi-year calendar, CPR–SLC peaks in May at 98.7% on-time while February carries the heaviest traffic (~57 flights per month) ; the softest month is December at 83.8%, a 14.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does CPR to SLC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, CPR to SLC ranks #3675 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 CPR to SLC? ▼
Flights from Casper to Salt Lake City have a 90.1% on-time rate based on 2,234 flights. The average delay is 99.3 minutes. The best recent month was Nov 2022 with 85% on-time.
What is the cancellation rate for CPR to SLC? ▼
Over the last 24 months, 0.5% of flights on this route were cancelled (4 of 792 flights) and 0.1% were diverted.
How far is the flight from CPR to SLC? ▼
The flight distance from Casper (CPR) to Salt Lake City (SLC) is approximately 320 miles. This route is served by 1 carrier.
When is the best time to fly from CPR to SLC? ▼
The best recent month for on-time performance was Nov 2022 (85% on-time). The worst was Dec 2022 (79% on-time). Consider booking during months with historically better performance.

Airports on this route

CPR Airport

Casper
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 CPR–SLC data

CPR–SLC runs 11.1 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare CPR and SLC airport profiles: delay causes and top routes differ even on the same corridor. CPR airport
  • If your dates flex, May (98.7% on-time) beats December (83.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 90.1% 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.