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Route · SLC → IDA · 2020–2025 BTS data

Salt Lake City to Idaho Falls

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SLC to IDA (Salt Lake City to Idaho Falls) ranks #1767 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

89.6%
On-time
+10.6 pts
vs US avg
77 min
Delay when late
7,153
Flights
#1767 of 4927
Corpus placement

Cancelled

0.2%

Best Month

Oct 2024 99%

Worst Month

Jan 2024 78%

Distance

188 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 90 12 1 1 DL,OO
Nov 2025 88 6 2 0 OO,DL
Oct 2025 92 10 0 0 OO,DL
Sep 2025 97 9 0 0 OO,DL
Aug 2025 122 16 0 0 OO,DL
Jul 2025 119 15 0 0 OO,DL
Jun 2025 110 12 0 0 OO,DL
May 2025 93 19 0 0 OO,DL
Apr 2025 90 13 0 0 OO,DL
Mar 2025 91 14 0 0 OO,DL
Feb 2025 78 10 0 0 OO,DL
Jan 2025 88 16 1 0 OO,DL
Dec 2024 88 18 0 0 DL,OO
Nov 2024 85 6 0 0 OO,DL
Oct 2024 88 1 0 0 OO,DL
Sep 2024 85 8 0 0 OO
Aug 2024 92 12 0 0 OO
Jul 2024 92 13 0 0 OO
Jun 2024 89 11 0 0 OO
May 2024 88 10 0 0 OO
Apr 2024 86 6 0 0 OO
Mar 2024 88 8 0 0 OO
Feb 2024 78 4 0 1 OO
Jan 2024 87 19 1 0 OO

SLC–IDA seasonal on-time pattern

Best: April (92.6%) · weakest: December (83.7%)

82%84%86%88%90%92%94% JanFebMarAprMayJunJulAugSepOctNovDec 83.7%

Strongest calendar month

April

92.6% on-time · ~97 flights/mo

Busiest calendar month

August

~108 flights/mo avg

Weakest calendar month

December

83.7% on-time · ~97 flights/mo

Cancellation Rate

0.2%

5 of 2,204 flights

Diversion Rate

0.1%

2 of 2,204 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

IDA - Idaho Falls

Full on-time, delay-cause, and seasonal performance for Idaho Falls, ID.

IDA on-time profile

Compare the two airports

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

Compare SLC vs IDA

Origin-hub reliability standing

Among SLC's stronger departures

SLC → IDA posts a 89.6% 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 #181 of 4927 (highest on-time = #1).

What the Data Says About SLC to IDA

Salt Lake City to Idaho Falls (SLC to IDA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.6% on-time rate across 7,153 flights, with delays that do happen averaging 77.3 minutes. The corridor runs roughly 188 miles and is served by 3 carriers. Over the most recent 24 months, 5 of 2,204 flights were cancelled (0.2%) and 2 diverted (0.1%).

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 99% on-time, while Jan 2024 came in at just 78% - a 21-point swing worth factoring into travel timing.

On the multi-year calendar, SLC–IDA peaks in April at 92.6% on-time while August carries the heaviest traffic (~108 flights per month) ; the softest month is December at 83.7%, a 8.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SLC to IDA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SLC to IDA ranks #1767 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 IDA? ▼
Flights from Salt Lake City to Idaho Falls have a 89.6% on-time rate based on 7,153 flights. The average delay is 77.3 minutes. The best recent month was Oct 2024 with 99% on-time.
What is the cancellation rate for SLC to IDA? ▼
Over the last 24 months, 0.2% of flights on this route were cancelled (5 of 2,204 flights) and 0.1% were diverted.
How far is the flight from SLC to IDA? ▼
The flight distance from Salt Lake City (SLC) to Idaho Falls (IDA) is approximately 188 miles. This route is served by 3 carriers.
When is the best time to fly from SLC to IDA? ▼
The best recent month for on-time performance was Oct 2024 (99% on-time). The worst was Jan 2024 (78% on-time). Consider booking during months with historically better performance.

Airports on this route

SLC Airport

Salt Lake City
IDA Airport

Idaho Falls
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–IDA data

SLC–IDA runs 10.6 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 IDA airport profiles: delay causes and top routes differ even on the same corridor. SLC airport
  • If your dates flex, April (92.6% on-time) beats December (83.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 89.6% 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.