SLC to HOU flight delays
Salt Lake City, UT (SLC) Houston, TX (HOU) · 1,214 miles
409 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
82.02%
Arrived on time
Within 15 minutes of schedule
0.24%
Cancelled
Share of scheduled flights
42 min
When late, late by
Average across delayed arrivals
9 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In September it ran 41 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Only Southwest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
This is a thin route — 409 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Flights from Salt Lake City to Houston keep to schedule more reliably than most. On a route this punctual the day you fly matters more than the airline you pick.
Which airline should you fly on this route?
Over January 2025 – August 2026, Southwest Airlines arrived on time most often on SLC to HOU. Flights ran closest to schedule in September and worst in July.
Every airline on SLC to HOU
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 409 | 82.02% | 0.24% | 42 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
HOU to SLC Houston back to Salt Lake City 80.64% on time BOther routes from Salt Lake City
Common questions
Are flights from Salt Lake City to Houston usually delayed?
82.02% of flights on the SLC to HOU route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Salt Lake City to Houston?
Only Southwest Airlines appears in the published record on this route, with 409 flights and 82.02% arriving on time.
How often are SLC to HOU flights cancelled?
0.24% of scheduled flights did not operate — about 2 in every thousand. That is in the normal range.
What is the best month to fly Salt Lake City to Houston?
September, when 100% of flights arrived on time. The worst was July at 59%.
When SLC to HOU flights are late, how late are they?
About 42 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SLC to HOU during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →