Salt Lake City (SLC) to Chicago (ORD): On-Time Performance
Data through July 2026
The calendar drives reliability on SLC–ORD. September 2024 flights landed on schedule 90% of the time, but July 2025 dropped to 66% — a gap of 24 points. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 70%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 8.8
- last 12 months
- Duration
- 3h 16m
- scheduled
- Distance
- 1,250 mi
Best airline from SLC to ORD
6 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 80% | 27 min | 0.6% | 713 |
| United Airlines | 79% | 19 min | 1.1% | 2,160 |
| Delta Air Lines | 77% | 17 min | 0.9% | 2,111 |
| Envoy Air | 75% | 19 min | 0.0% | 87 |
| American Airlines | 74% | 28 min | 1.5% | 1,420 |
| Frontier Airlines | 61% | 27 min | 4.3% | 70 |
Monthly on-time trend
Best time to fly from SLC to ORD
Aim for departures around 5 a.m. (93% on-time); avoid 2 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 22 min |
| Tuesdaybest | 81% | 14 min |
| Wednesday | 77% | 19 min |
| Thursday | 76% | 24 min |
| Friday | 76% | 24 min |
| Saturday | 79% | 20 min |
| Sunday | 76% | 24 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft27%
- Airline operations40%
- National airspace system29%
- Weather4%
Frequently asked questions
- How often are flights from SLC to ORD delayed?
- 23% of SLC–ORD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from SLC to ORD?
- SkyWest Airlines has the best on-time record on this route at 80%, based on 713 flights. 6 airlines flew SLC–ORD frequently enough to compare in this period.
- What is the best time of day to fly from SLC to ORD?
- Departures around 5 a.m. have the best record (93% on-time), while departures around 2 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SLC to ORD?
- The scheduled SLC–ORD flight time averages 3h 16m over 1,250 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are SLC to ORD flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SLC to ORD?
- July 2025 was the roughest month in this dataset, with only 66% of arrivals on time. The best was September 2024 at 90%. If your dates are flexible, that 24-point gap is worth planning around.
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Based on 6,561 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.