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Route · SLC → MCI · 2020–2025 BTS data

Salt Lake City to Kansas City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SLC to MCI (Salt Lake City to Kansas City) ranks #2216 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

85.1%
On-time
+6.1 pts
vs US avg
73 min
Delay when late
5,670
Flights
#2216 of 4927
Corpus placement

Cancelled

0.9%

Best Month

Sep 2025 93%

Worst Month

Aug 2024 69%

Distance

920 mi

Carriers

4

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 90 19 1 0 DL
Nov 2025 87 15 0 0 DL
Oct 2025 91 11 0 0 DL
Sep 2025 85 6 0 2 DL
Aug 2025 91 16 1 1 DL
Jul 2025 92 23 1 0 DL
Jun 2025 89 23 0 2 DL
May 2025 87 15 0 0 DL
Apr 2025 84 11 0 0 DL
Mar 2025 80 11 1 0 DL
Feb 2025 65 9 0 0 DL
Jan 2025 70 8 6 0 DL
Dec 2024 83 16 0 0 DL
Nov 2024 82 14 0 0 DL
Oct 2024 84 7 0 0 DL
Sep 2024 81 16 0 0 DL
Aug 2024 85 26 0 0 DL
Jul 2024 87 20 7 1 DL
Jun 2024 83 15 0 2 DL
May 2024 79 9 0 0 DL
Apr 2024 77 10 0 0 DL
Mar 2024 80 15 0 0 DL
Feb 2024 66 10 0 0 DL
Jan 2024 74 18 1 0 DL,OO

SLC–MCI seasonal on-time pattern

Best: September (91.2%) · weakest: February (80.6%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 82.2%

Strongest calendar month

September

91.2% on-time · ~84 flights/mo

Busiest calendar month

October

~87 flights/mo avg

Weakest calendar month

February

80.6% on-time · ~67 flights/mo

Cancellation Rate

0.9%

18 of 1,972 flights

Diversion Rate

0.4%

8 of 1,972 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

MCI - Kansas City

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

MCI on-time profile

Compare the two airports

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

Compare SLC vs MCI

Origin-hub reliability standing

Among SLC's stronger departures

SLC → MCI posts a 85.1% 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 #1199 of 4927 (highest on-time = #1).

What the Data Says About SLC to MCI

Salt Lake City to Kansas City (SLC to MCI) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.1% on-time rate across 5,670 flights, with delays that do happen averaging 72.6 minutes. The corridor runs roughly 920 miles and is served by 4 carriers. Over the most recent 24 months, 18 of 1,972 flights were cancelled (0.9%) and 8 diverted (0.4%).

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 93% on-time, while Aug 2024 came in at just 69% - a 24-point swing worth factoring into travel timing.

On the multi-year calendar, SLC–MCI peaks in September at 91.2% on-time while October carries the heaviest traffic (~87 flights per month) ; the softest month is February at 80.6%, 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 SLC to MCI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SLC to MCI ranks #2216 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 MCI? ▼
Flights from Salt Lake City to Kansas City have a 85.1% on-time rate based on 5,670 flights. The average delay is 72.6 minutes. The best recent month was Sep 2025 with 93% on-time.
What is the cancellation rate for SLC to MCI? ▼
Over the last 24 months, 0.9% of flights on this route were cancelled (18 of 1,972 flights) and 0.4% were diverted.
How far is the flight from SLC to MCI? ▼
The flight distance from Salt Lake City (SLC) to Kansas City (MCI) is approximately 920 miles. This route is served by 4 carriers.
When is the best time to fly from SLC to MCI? ▼
The best recent month for on-time performance was Sep 2025 (93% on-time). The worst was Aug 2024 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

SLC Airport

Salt Lake City
MCI Airport

Kansas 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 SLC–MCI data

SLC–MCI runs 6.1 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 MCI airport profiles: delay causes and top routes differ even on the same corridor. SLC airport
  • If your dates flex, September (91.2% on-time) beats February (80.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 85.1% 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.