Route · COS → SLC · 2020–2025 BTS data
Colorado Springs to Salt Lake City
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), COS to SLC (Colorado Springs to Salt Lake City) ranks #2680 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 89.7%
- On-time
- +10.7 pts
- vs US avg
- 102 min
- Delay when late
- 4,509
- Flights
- #2680 of 4927
- Corpus placement
Cancelled
0.1%
Best Month
Oct 2025 100%
Worst Month
Jul 2025 82%
Distance
411 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 59 | 6 | 1 | 0 | OO |
| Nov 2025 | 57 | 3 | 0 | 0 | OO |
| Oct 2025 | 61 | 0 | 0 | 1 | OO |
| Sep 2025 | 60 | 5 | 0 | 0 | OO |
| Aug 2025 | 62 | 7 | 0 | 0 | OO |
| Jul 2025 | 56 | 10 | 0 | 0 | OO |
| Jun 2025 | 30 | 1 | 0 | 0 | OO |
| May 2025 | 31 | 0 | 0 | 0 | OO |
| Apr 2025 | 30 | 0 | 0 | 0 | OO |
| Mar 2025 | 31 | 4 | 0 | 0 | OO |
| Jan 2025 | 31 | 6 | 0 | 0 | OO |
| Dec 2024 | 31 | 1 | 0 | 0 | OO |
| Nov 2024 | 30 | 3 | 0 | 0 | OO |
| Oct 2024 | 31 | 5 | 0 | 0 | OO |
| Sep 2024 | 30 | 0 | 0 | 0 | OO |
| Aug 2024 | 31 | 2 | 0 | 0 | OO |
| Jul 2024 | 31 | 3 | 0 | 0 | OO |
| Jun 2024 | 30 | 0 | 0 | 0 | OO |
| May 2024 | 31 | 2 | 0 | 0 | OO |
| Apr 2024 | 30 | 4 | 0 | 0 | OO |
| Mar 2024 | 31 | 1 | 0 | 0 | OO |
| Jan 2024 | 31 | 3 | 0 | 0 | OO |
| Dec 2023 | 31 | 4 | 0 | 1 | OO |
| Nov 2023 | 30 | 3 | 0 | 0 | OO |
COS–SLC seasonal on-time pattern
Best: November (94.3%) · weakest: July (83.7%)
Strongest calendar month
November
94.3% on-time · ~65 flights/mo
Busiest calendar month
August
~72 flights/mo avg
Weakest calendar month
July
83.7% on-time · ~71 flights/mo
Cancellation Rate
0.1%
1 of 906 flights
Diversion Rate
0.2%
2 of 906 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
COS - Colorado Springs
Full on-time, delay-cause, and seasonal performance for Colorado Springs, CO.
COS on-time profileSLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
SLC on-time profileCompare the two airports
See COS and SLC side by side on delays, cancellations, and reliability.
Compare COS vs SLCOrigin-hub reliability standing
Among COS's stronger departures
COS → SLC posts a 89.7% on-time rate, landing in the ≥85% band with 4 of 11 BTS-tracked routes leaving Colorado Springs. The same hub also shows 7 mid-band and 0 challenged departures · fleet-wide on-time rank #163 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to COS–SLC.
Routes with a similar on-time rate
What the Data Says About COS to SLC
Colorado Springs to Salt Lake City (COS to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.7% on-time rate across 4,509 flights, with delays that do happen averaging 102.1 minutes. The corridor runs roughly 411 miles and is served by 1 carrier. Over the most recent 24 months, 1 of 906 flights were cancelled (0.1%) and 2 diverted (0.2%).
The monthly split is wide on this route: Oct 2025 posted the strongest performance at 100% on-time, while Jul 2025 came in at just 82% - a 18-point swing worth factoring into travel timing.
On the multi-year calendar, COS–SLC peaks in November at 94.3% on-time while August carries the heaviest traffic (~72 flights per month) ; the softest month is July at 83.7%, a 10.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does COS to SLC rank among US routes by traffic? ▼
How often are flights delayed from COS to SLC? ▼
What is the cancellation rate for COS to SLC? ▼
How far is the flight from COS to SLC? ▼
When is the best time to fly from COS to SLC? ▼
Airports on this route
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 COS–SLC data
COS–SLC runs 10.7 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare COS and SLC airport profiles: delay causes and top routes differ even on the same corridor. COS airport
- If your dates flex, November (94.3% on-time) beats July (83.7%) on this corridor. Seasonal chart
- 4 other routes post a similar 89.7% 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.
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.