About 1 in 5 DL 1299 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (22%); 0.0% were cancelled. The typical flight landed 11 minutes early.
DL 1299: IAH → SLC
Scheduled to leave Houston at 7:01 p.m. local time. Over the past year it arrived on time 78% of the time (195 flights), in line with other DL flights on the route at that hour (76%). Last seen in the data Aug 28, 2026.
Usually Delta Air Lines's last flight of the day from Houston to Salt Lake City (100% of days). Delta Air Lines's last IAH–SLC flight was cancelled 0.3% of the time, against 0.5% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 7:35 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 30 | 83% |
| Tuesday | 30 | 87% |
| Wednesday | 30 | 70% |
| Thursday | 29 | 76% |
| Friday | 29 | 83% |
| Saturday | 21 | 81% |
| Sunday | 26 | 69% |
Why it was late
All flights IAH → SLC · Connecting off DL 1299? Check the risk
DL 1299: SLC → IAH
Scheduled to leave Salt Lake City at 1:45 p.m. local time. Over the past year it arrived on time 79% of the time (155 flights), in line with other DL flights on the route at that hour (82%). Last seen in the data Aug 28, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 25 | 84% |
| Tuesday | 24 | 92% |
| Wednesday | 24 | 83% |
| Thursday | 24 | 63% |
| Friday | 24 | 71% |
| Saturday | 9 | — |
| Sunday | 25 | 88% |
Why it was late
All flights SLC → IAH · Connecting off DL 1299? Check the risk
Questions
How often is DL 1299 from IAH to SLC late?
Delta Air Lines 1299 from Houston, TX to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 22% of 195 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is DL 1299 from SLC to IAH late?
Delta Air Lines 1299 from Salt Lake City, UT to Houston, TX arrived 15 or more minutes late, was diverted or was cancelled on 21% of 155 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.