Airports › Idaho
Airport · 12 months to July 2026
Idaho Falls Regional: delays and on-time record
Idaho Falls, Idaho
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 4,724 domestic departures from Idaho Falls Regional (IDA), Idaho Falls, in the 12 months to July 2026: about 13 a day to 12 destinations.
82.1% of those flights left the gate less than 15 minutes late, 6.0 points above the national departure figure of 76.1%. Flights arriving at IDA were on time 81.1% of the time, 5.1 points above the national arrival figure of 76.0%.
0.7% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 21.1 min.
SkyWest Airlines is the largest reporting carrier at IDA with 78% of departures. Among carriers with at least 120 departures, Delta Air Lines had the highest on-time arrival share for its IDA departures (88.3%) and Allegiant Air the lowest (71.0%).
On-time departures are down 0.8 points on the previous 12 months (82.9%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving IDA, air carrier 51%, late-arriving aircraft 27% and national aviation system 12%.
- On time 80.5%
- Arrived 15+ minutes late 18.2%
- Cancelled 0.7%
- Diverted 0.6%
As origin and as destination, against the nation
| Measure | Departures from IDA | Arrivals at IDA | All reported flights | IDA departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 82.1% | 82.0% | 76.1% | 82.9% |
| Arrived on time | 80.5% | 81.1% | 76.0% | 80.1% |
| Cancelled | 0.7% | 0.5% | 1.8% | 0.8% |
| Diverted | 0.6% | 0.3% | 0.3% | 0.4% |
| Average departure delay (late minutes only) | 21.1 min | 15.1 min | 17.4 min | 18.5 min |
| Arrival delay minutes per 100 flights | 2,094 | 1,512 | 1,684 | 1,908 |
| Scheduled flights | 4,724 | 4,722 | 7,043,858 | 3,961 |
12 months to July 2026. The first column follows flights that left IDA; the second follows flights that landed there. Year on year, on-time departures moved −0.8 pts.
Airlines at IDA
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| OO SkyWest Airlines | 3,696 | 78% | 81.4% | 5.5 min | 0.7% |
| G4 Allegiant Air | 496 | 10% | 71.0% | 44.5 min | 0.4% |
| DL Delta Air Lines | 317 | 7% | 88.3% | 9.7 min | 1.3% |
| UA United Airlines | 215 | 5% | 77.2% | 10.4 min | 0.0% |
Departures from IDA by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 80.5%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from IDA
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| IDA–DEN | Idaho Falls to Denver | 1,699 | 79.9% | 5.6 min | 0.5% |
| IDA–SLC | Idaho Falls to Salt Lake City | 1,193 | 91.5% | -1.4 min | 0.4% |
| IDA–DFW | Idaho Falls to Dallas/Fort Worth | 529 | 71.6% | 16.8 min | 1.7% |
| IDA–SEA | Idaho Falls to Seattle | 366 | 83.6% | 0.4 min | 0.3% |
| IDA–AZA | Idaho Falls to Phoenix | 219 | 77.2% | 16.2 min | 0.5% |
| IDA–PHX | Idaho Falls to Phoenix | 200 | 87.5% | 9.8 min | 0.0% |
| IDA–ORD | Idaho Falls to Chicago | 169 | 58.6% | 36.3 min | 3.0% |
| IDA–PDX | Idaho Falls to Portland | 119 | 62.2% | 46.0 min | 0.0% |
| IDA–LAS | Idaho Falls to Las Vegas | 114 | 65.8% | 67.3 min | 0.9% |
| IDA–SNA | Idaho Falls to Santa Ana | 105 | 68.6% | 50.0 min | 0.0% |
The 10 busiest of 12 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 94 departures, 11 am to 12 pm had the highest on-time share (95.3% of 129 flights) and 12 pm to 1 pm the lowest (64.8% of 193).
Delay causes
Cancellations by reported reason (31 in the period): air carrier 26%, weather 65%, national aviation system 10%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for IDA on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave IDA on time?
82.1% of the 4,724 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 0.7% were cancelled.
How often do flights arrive at IDA on time?
81.1% of 4,722 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at IDA?
Counting departures from IDA and whether they reached their destination on time, Delta Air Lines had the highest share (88.3% of 317 flights), then SkyWest Airlines (81.4%) and United Airlines (77.2%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at IDA?
For departures from IDA that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: air carrier 51%, late-arriving aircraft 27%, national aviation system 12%, extreme weather 11%, security 0%.
What time of day has the highest on-time share at IDA?
Departures scheduled from 11 am to 12 pm local time left on time 95.3% of the time, the highest of any hour with enough flights to compare; 12 pm to 1 pm was lowest at 64.8%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 82.1%, down 0.8 points on the previous 12 months (82.9%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at IDA?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.