Route Reliability
GUC → Houston
GUC–IAH · 886 miles · GUC Airport to George Bush Intercontinental Airport
83
Pretty Reliable
WanderNerd Reliability Score
- 85%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 2.5%
- Cancelled
- 118
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 85% of the time across 118 flights. No comparison to make.
What the data says
Departure time hasn't mattered much.
On-time rates stay between 85% and 87% across the day.
Sunday scaries are real for this one.
GUC–IAH flights arrived on time 100% of the time on Tuesdays and just 70% on Sundays. That gap is worth planning around.
Flights on this route
The breakdown
- Mon86%(14 flights)
- Tue100%(14 flights)
- Wed86%(14 flights)
- Thu87%(15 flights)
- Fri86%(14 flights)
- Sat88%(24 flights)
- Sun70%(20 flights)
- 6–9 AM87%(15 flights)
- 12–3 PM85%(100 flights)
75%
Mar
Dec 93% → Mar 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| December 2025 | 93% | 14 |
| January 2026 | 79% | 29 |
| February 2026 | 96% | 28 |
| March 2026 | 75% | 28 |
Keep nerding
Based on 118 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.