Route
STT → ORD
Cyril E. King Airport Chicago O'Hare International Airport
2,116 miles
Return route ORD → STT →
How punctual is this route?
- On-time arrivals
- 71.0%
- Less than 15 minutes late
- Cancelled
- 1.2%
- Of scheduled flights
- Average delay when late
- 85 min
- Flights arriving 15+ minutes late
- Flights tracked
- 254
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Airline (crew, maintenance, cleaning) 35%
- Air traffic control & airport 22%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Oct 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| October 2025 | 0.0% | 1 |
| November 2025 | 57.1% | 14 |
| December 2025 | 82.4% | 34 |
| January 2026 | 51.2% | 47 |
| February 2026 | 78.7% | 47 |
| March 2026 | 70.9% | 61 |
| April 2026 | 71.4% | 35 |
| May 2026 | 100.0% | 5 |
| June 2026 | 75.0% | 4 |
| July 2026 | 100.0% | 4 |
| August 2026 | 100.0% | 2 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 154 | 71.6% | 1.3% | 54 min |
| American Airlines | 100 | 69.9% | 1.0% | 131 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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