Chicago (ORD) to Charleston (CHS): On-Time Performance
Data through July 2026
Chicago (ORD) to Charleston (CHS) effectively runs on two schedules. In November 2024, 94% of arrivals were on time; in July 2025 that fell to 65% — a 29-point seasonal swing. Across the full period the route averages 79% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 69%), which matters most in the rough months.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 5.8
- last 12 months
- Duration
- 2h 22m
- scheduled
- Distance
- 760 mi
Best airline from ORD to CHS
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 86% | 8 min | 2.0% | 953 |
| Envoy Air | 78% | 12 min | 2.2% | 999 |
| United Airlines | 77% | 16 min | 1.2% | 1,347 |
| SkyWest Airlines | 76% | 19 min | 1.4% | 139 |
| American Airlines | 75% | 19 min | 1.8% | 335 |
Monthly on-time trend
Best time to fly from ORD to CHS
Aim for departures around 7 a.m. (89% on-time); avoid 7 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 15 min |
| Tuesdaybest | 83% | 10 min |
| Wednesday | 79% | 15 min |
| Thursday | 79% | 12 min |
| Friday | 77% | 16 min |
| Saturday | 81% | 12 min |
| Sunday | 76% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations27%
- National airspace system22%
- Weather6%
Frequently asked questions
- How often are flights from ORD to CHS delayed?
- 21% of ORD–CHS 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 14 minutes.
- Which airline is most reliable from ORD to CHS?
- Republic Airways has the best on-time record on this route at 86%, based on 953 flights. 5 airlines flew ORD–CHS frequently enough to compare in this period.
- What is the best time of day to fly from ORD to CHS?
- Departures around 7 a.m. have the best record (89% on-time), while departures around 7 p.m. have the worst (63%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to CHS?
- The scheduled ORD–CHS flight time averages 2h 22m over 760 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are ORD to CHS flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from ORD to CHS?
- July 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was November 2024 at 94%. If your dates are flexible, that 29-point gap is worth planning around.
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Based on 3,774 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.