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Route · MCI → SLC · 2020–2025 BTS data

Kansas City to Salt Lake City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MCI to SLC (Kansas City to Salt Lake City) ranks #2217 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

89%
On-time
+10 pts
vs US avg
90 min
Delay when late
5,667
Flights
#2217 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Oct 2024 95%

Worst Month

Dec 2025 77%

Distance

920 mi

Carriers

4

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 90 21 1 0 DL
Nov 2025 87 18 0 0 DL
Oct 2025 91 15 0 1 DL
Sep 2025 85 7 0 0 DL
Aug 2025 91 8 1 0 DL
Jul 2025 92 11 1 0 DL
Jun 2025 89 9 1 0 DL
May 2025 87 8 0 0 DL
Apr 2025 84 7 1 0 DL
Mar 2025 80 9 0 0 DL
Feb 2025 65 15 0 0 DL
Jan 2025 70 7 6 0 DL
Dec 2024 83 5 0 0 DL
Nov 2024 82 13 0 0 DL
Oct 2024 84 4 0 0 DL
Sep 2024 81 10 0 0 DL
Aug 2024 85 11 0 1 DL
Jul 2024 87 11 8 0 DL
Jun 2024 83 10 0 0 DL
May 2024 79 6 0 0 DL
Apr 2024 77 9 0 1 DL
Mar 2024 80 8 0 0 DL
Feb 2024 66 7 0 0 DL
Jan 2024 74 13 1 0 DL,OO

MCI–SLC seasonal on-time pattern

Best: September (93.0%) · weakest: February (82.4%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 86.3%

Strongest calendar month

September

93.0% on-time · ~84 flights/mo

Busiest calendar month

October

~87 flights/mo avg

Weakest calendar month

February

82.4% on-time · ~67 flights/mo

Cancellation Rate

1.0%

20 of 1,972 flights

Diversion Rate

0.2%

3 of 1,972 flights

Explore origin & destination

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

MCI - Kansas City

Full on-time, delay-cause, and seasonal performance for Kansas City, MO.

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

Compare MCI vs SLC

Origin-hub reliability standing

Among MCI's stronger departures

MCI → SLC posts a 89% on-time rate, landing in the ≥85% band with 14 of 39 BTS-tracked routes leaving Kansas City. The same hub also shows 25 mid-band and 0 challenged departures · fleet-wide on-time rank #252 of 4927 (highest on-time = #1).

What the Data Says About MCI to SLC

Kansas City to Salt Lake City (MCI to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89% on-time rate across 5,667 flights, with delays that do happen averaging 90.2 minutes. The corridor runs roughly 920 miles and is served by 4 carriers. Over the most recent 24 months, 20 of 1,972 flights were cancelled (1.0%) and 3 diverted (0.2%).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 95% on-time, while Dec 2025 came in at just 77% - a 19-point swing worth factoring into travel timing.

On the multi-year calendar, MCI–SLC peaks in September at 93.0% on-time while October carries the heaviest traffic (~87 flights per month) ; the softest month is February at 82.4%, 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 MCI to SLC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MCI to SLC ranks #2217 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 MCI to SLC? ▼
Flights from Kansas City to Salt Lake City have a 89% on-time rate based on 5,667 flights. The average delay is 90.2 minutes. The best recent month was Oct 2024 with 95% on-time.
What is the cancellation rate for MCI to SLC? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (20 of 1,972 flights) and 0.2% were diverted.
How far is the flight from MCI to SLC? ▼
The flight distance from Kansas City (MCI) to Salt Lake City (SLC) is approximately 920 miles. This route is served by 4 carriers.
When is the best time to fly from MCI to SLC? ▼
The best recent month for on-time performance was Oct 2024 (95% on-time). The worst was Dec 2025 (77% on-time). Consider booking during months with historically better performance.

Airports on this route

MCI Airport

Kansas City
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 MCI–SLC data

MCI–SLC runs 10 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare MCI and SLC airport profiles: delay causes and top routes differ even on the same corridor. MCI airport
  • If your dates flex, September (93.0% on-time) beats February (82.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 89% 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.