Flight Reliability
UA 4867 · United Airlines
Houston → SGF (IAH–SGF)97% of its flights flew this route. The rest (IAD–BDL, XNA–IAH) are included in these numbers.
- 77%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0%
- Cancelled
- 8 min early
- Median arrival delay
Based on 154 historical flights. Data through May 2026.
What the data says
3–6 PM has a slight edge.
Departures between 3–6 PM arrived on time 79% of the time, against 73% between 6–9 PM.
Tuesdays have been rough.
UA 4867 arrived on time 91% of the time on Sundays and just 67% on Tuesdays. That gap is worth planning around.
It basically never cancels.
Out of 154 scheduled flights, only 0.0% were cancelled.
Recent months have been rougher.
UA 4867 arrived on time 70% of the time over the last three months in the data, compared with 85% in the three months before that.
The breakdown
- Mon82%(22 flights)
- Tue67%(15 flights)
- Wed76%(21 flights)
- Thu70%(23 flights)
- Fri78%(23 flights)
- Sat74%(27 flights)
- Sun91%(23 flights)
- 6–9 AM—(3 flights)
- 12–3 PM—(1 flights)
- 3–6 PM79%(113 flights)
- 6–9 PM73%(37 flights)
Aug 91% → May 71% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 91% | 11 |
| September 2025 | 89% | 26 |
| October 2025 | 74% | 31 |
| November 2025 | 80% | 30 |
| December 2025 | 60% | 15 |
| May 2026 | 71% | 31 |
- Departures on time
- 81%
- Diverted
- 0%
- Flights flown
- 154
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 154 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.