Flight Reliability
UA 4273 · United Airlines
Houston → GPT (IAH–GPT)98% of its flights flew this route. The rest (IAH–BTR) are included in these numbers.
85
Pretty Reliable
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.8%
- Cancelled
- 13 min early
- Median arrival delay
Based on 329 historical flights. Data through May 2026.
What the data says
Tuesday has been the better bet.
A small edge: 90% on time on Tuesdays against 84% on Sundays.
A bit ahead of the United Airlines network.
UA 4273 arrived on time 86% of the time, versus 79% across the United Airlines network.
Trending in the right direction.
UA 4273 arrived on time 96% of the time over the last three months in the data, compared with 87% in the three months before that.
The breakdown
- Mon84%(51 flights)
- Tue90%(31 flights)
- Wed85%(47 flights)
- Thu86%(51 flights)
- Fri84%(51 flights)
- Sat88%(40 flights)
- Sun84%(51 flights)
- 12–3 PM86%(316 flights)
- 6–9 PM—(6 flights)
96%
May
Jun 52% → May 96% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 52% | 27 |
| July 2025 | 83% | 30 |
| August 2025 | 87% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 83% | 30 |
| December 2025 | 84% | 25 |
| January 2026 | 77% | 22 |
| February 2026 | 100% | 21 |
| March 2026 | 93% | 27 |
| April 2026 | 100% | 22 |
| May 2026 | 96% | 26 |
- Departures on time
- 85%
- Diverted
- 0.3%
- Flights flown
- 322
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 329 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.