Salt Lake City (SLC) to Chicago (ORD): On-Time Performance
Data through May 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 78% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 71%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 8.7
- last 12 months
- Duration
- 3h 15m
- scheduled
- Distance
- 1,250 mi
Best airline from SLC to ORD
6 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 80% | 27 min | 0.6% | 717 |
| United Airlines | 79% | 18 min | 0.8% | 2,063 |
| Delta Air Lines | 78% | 18 min | 0.7% | 2,025 |
| Envoy Air | 75% | 19 min | 0.0% | 87 |
| American Airlines | 74% | 26 min | 1.3% | 1,267 |
| Frontier Airlines | 60% | 27 min | 3.9% | 77 |
Monthly on-time trend
Best time to fly from SLC to ORD
Aim for departures around 6 a.m. (89% on-time); avoid 2 p.m. departures (67%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 23 min |
| Tuesdaybest | 81% | 15 min |
| Wednesday | 78% | 17 min |
| Thursday | 76% | 24 min |
| Friday | 76% | 23 min |
| Saturday | 80% | 18 min |
| Sunday | 75% | 25 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 operations43%
- National airspace system25%
- Weather5%
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 2024-06 and 2026-05. 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 717 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 6 a.m. have the best record (89% on-time), while departures around 2 p.m. have the worst (67%). 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 15m 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?
- 0.9% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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.
Explore related pages
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Based on 6,236 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.