Flight Reliability
UA 5531 · United Airlines
Oklahoma City → Houston (OKC–IAH)93% of its flights flew this route. The rest (ORD–LEX, MLI–ORD) are included in these numbers.
87
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0.6%
- Cancelled
- 10 min early
- Median arrival delay
Based on 356 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
UA 5531 arrived on time 94% of the time on Tuesdays and just 75% on Mondays. That gap is worth planning around.
A bit ahead of the United Airlines network.
UA 5531 arrived on time 84% of the time, versus 79% across the United Airlines network.
The breakdown
- Mon75%(51 flights)
- Tue94%(50 flights)
- Wed88%(50 flights)
- Thu84%(50 flights)
- Fri84%(50 flights)
- Sat86%(50 flights)
- Sun80%(50 flights)
- 6–9 AM—(1 flights)
- 12–3 PM84%(350 flights)
87%
May
Jun 64% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 64% | 28 |
| July 2025 | 80% | 30 |
| August 2025 | 77% | 30 |
| September 2025 | 96% | 25 |
| October 2025 | 87% | 31 |
| November 2025 | 93% | 29 |
| December 2025 | 79% | 28 |
| January 2026 | 93% | 30 |
| February 2026 | 89% | 28 |
| March 2026 | 77% | 31 |
| April 2026 | 90% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 85%
- Diverted
- 0.8%
- Flights flown
- 351
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 356 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.