Route profile
IND→SLC
Flight reliability, delays and best times to fly from Indianapolis to Salt Lake City, 1,355 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
March 2024 – July 2026
Better than 99% of comparable major US routes (4,598 compared)
Calculated from 872 flights. How this is calculated
IND → SLC arrives on time 91.2% of the time; the return trip, SLC → IND, arrives on time 82.5% of the time, an 8.7-point gap between the two directions of the same city pair.
IND → SLC spends 23.8 minutes on the ground on a 1,355-mile trip: 16.0 minutes from pushback to wheels-up at IND and 7.8 minutes from touchdown to gate at SLC.
Source: US DOT Bureau of Transportation Statistics · Data covering March 2024 – July 2026
What stands out
This route stays close to typical even on its worst days, a smaller gap than 99% of 4,598 comparable routes.
A typical arrival is 11 min early, and the worst tenth are only 22 minutes worse than that.
Source: FlyerIntel analysis of US DOT BTS data · March 2024 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,598 in the comparison.
When it goes wrong
March 2024 – July 2026
11 min late
against a median of 11 min early
Percentiles over 872 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at SLC after arriving from IND.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 22% | High risk |
| 45 min | 8.2% | Some risk |
| 60 min | 4.5% | Low risk |
| 90 min | 2.1% | Low risk |
| 120 min | 1.2% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.03% of the time and diverts 0.00% of the time, which a late arrival never shows up in.
Chance of missing is the share of 863 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 11 minutes late (90th-percentile gate arrival delay), over 872 operations.
Any other layover length: connection checker.
Why IND → SLC runs late
March 2024 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for IND → SLC. Only delays of 15 minutes or more are attributed.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Delta Air Lines | 872 | 91.2% | 1.03% | -11 min | 2.1% |
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| DL2137 Delta Air Lines | 7:59 AM | 784 | 90.6% |
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Monday the least, a gap of 10.0 percentage points.
Reliability over time
March 2024 – July 2026
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 88.8% against 92.8% in the 12 months before — declining by 4.0 percentage points.
Data and methodology
Calculated by FlyerIntel from 872 IND → SLC flight records from the US DOT Bureau of Transportation Statistics, covering March 2024 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed