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Route · FCA → SLC · 2020–2025 BTS data

Kalispell to Salt Lake City

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), FCA to SLC (Kalispell to Salt Lake City) ranks #1804 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

91.6%
On-time
+12.6 pts
vs US avg
105 min
Delay when late
6,989
Flights
#1804 of 4927
Corpus placement

Cancelled

0.5%

Best Month

Apr 2025 99%

Worst Month

Jan 2024 74%

Distance

531 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 90 9 1 0 DL,OO
Nov 2025 88 10 5 0 OO,DL
Oct 2025 92 6 0 0 DL,OO
Sep 2025 90 3 0 0 OO,DL
Aug 2025 101 3 0 0 OO,DL
Jul 2025 119 3 0 0 OO,DL
Jun 2025 116 2 0 0 OO,DL
May 2025 113 8 0 0 OO,DL
Apr 2025 90 1 0 0 DL,OO
Mar 2025 91 3 0 0 OO,DL
Feb 2025 78 12 0 0 OO,DL
Jan 2025 88 15 0 0 OO,DL
Dec 2024 90 12 0 0 DL,OO
Nov 2024 88 11 0 0 OO,DL
Oct 2024 92 7 0 0 OO,DL
Sep 2024 92 5 0 0 OO,DL
Aug 2024 120 14 0 0 DL,OO
Jul 2024 124 14 1 0 DL,OO
Jun 2024 113 10 0 0 DL,OO
May 2024 88 5 0 0 DL,OO
Apr 2024 86 4 1 0 DL,OO
Mar 2024 88 4 0 0 DL,OO
Feb 2024 81 8 0 0 DL,OO
Jan 2024 87 23 4 0 DL,OO

FCA–SLC seasonal on-time pattern

Best: April (97.0%) · weakest: December (81.1%)

80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 81.1%

Strongest calendar month

April

97.0% on-time · ~85 flights/mo

Busiest calendar month

July

~125 flights/mo avg

Weakest calendar month

December

81.1% on-time · ~88 flights/mo

Cancellation Rate

0.5%

12 of 2,305 flights

Diversion Rate

0.0%

0 of 2,305 flights

Explore origin & destination

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

FCA - Kalispell

Full on-time, delay-cause, and seasonal performance for Kalispell, MT.

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

Compare FCA vs SLC

Origin-hub reliability standing

Among FCA's stronger departures

FCA → SLC posts a 91.6% on-time rate, landing in the ≥85% band with 2 of 7 BTS-tracked routes leaving Kalispell. The same hub also shows 4 mid-band and 1 challenged departures · fleet-wide on-time rank #60 of 4927 (highest on-time = #1).

What the Data Says About FCA to SLC

Kalispell to Salt Lake City (FCA to SLC) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.6% on-time rate across 6,989 flights, with delays that do happen averaging 105.4 minutes. The corridor runs roughly 531 miles and is served by 3 carriers. Over the most recent 24 months, 12 of 2,305 flights were cancelled (0.5%) and 0 diverted (0.0%).

The monthly split is wide on this route: Apr 2025 posted the strongest performance at 99% on-time, while Jan 2024 came in at just 74% - a 25-point swing worth factoring into travel timing.

On the multi-year calendar, FCA–SLC peaks in April at 97.0% on-time while July carries the heaviest traffic (~125 flights per month) ; the softest month is December at 81.1%, a 15.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does FCA to SLC rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, FCA to SLC ranks #1804 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 FCA to SLC? ▼
Flights from Kalispell to Salt Lake City have a 91.6% on-time rate based on 6,989 flights. The average delay is 105.4 minutes. The best recent month was Apr 2025 with 99% on-time.
What is the cancellation rate for FCA to SLC? ▼
Over the last 24 months, 0.5% of flights on this route were cancelled (12 of 2,305 flights) and 0.0% were diverted.
How far is the flight from FCA to SLC? ▼
The flight distance from Kalispell (FCA) to Salt Lake City (SLC) is approximately 531 miles. This route is served by 3 carriers.
When is the best time to fly from FCA to SLC? ▼
The best recent month for on-time performance was Apr 2025 (99% on-time). The worst was Jan 2024 (74% on-time). Consider booking during months with historically better performance.

Airports on this route

FCA Airport

Kalispell
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 FCA–SLC data

FCA–SLC runs 12.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare FCA and SLC airport profiles: delay causes and top routes differ even on the same corridor. FCA airport
  • If your dates flex, April (97.0% on-time) beats December (81.1%) on this corridor. Seasonal chart
  • 4 other routes post a similar 91.6% 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.