Route
SLC → IAH
Salt Lake City International Airport George Bush Intercontinental Airport
How punctual is this route?
- On-time arrivals
- 86.1%
- Less than 15 minutes late
- Cancelled
- 0.7%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,931
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 54%
- Air traffic control & airport 22%
- Late-arriving aircraft 19%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 91.3% | 161 |
| October 2025 | 89.0% | 146 |
| November 2025 | 86.1% | 137 |
| December 2025 | 88.5% | 184 |
| January 2026 | 90.1% | 193 |
| February 2026 | 90.9% | 176 |
| March 2026 | 83.6% | 211 |
| April 2026 | 85.3% | 144 |
| May 2026 | 80.4% | 149 |
| June 2026 | 80.0% | 142 |
| July 2026 | 81.4% | 146 |
| August 2026 | 83.7% | 142 |
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 |
|---|---|---|---|---|
| Delta Air Lines | 1,016 | 83.1% | 0.2% | 83 min |
| United Airlines | 854 | 89.5% | 1.3% | 87 min |
| SkyWest Airlines | 61 | 88.1% | 1.6% | 63 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL2514
22% late · 365 flights
-
DL2502
11% late · 356 flights
-
UA2366
6% late · 311 flights
-
UA497
19% late · 213 flights
-
DL1299
21% late · 155 flights
-
UA2198
9% late · 106 flights
-
DL2445
14% late · 84 flights
-
DL2376
17% late · 55 flights
-
OO5699
14% late · 45 flights
-
UA476
6% late · 36 flights
-
UA1825
17% late · 31 flights
-
UA677
16% late · 31 flights
-
UA2659
17% late · 24 flights
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