ON TIMEBOARD
SLC Salt Lake City / HOU Houston

SLC → HOU on time

Salt Lake City (Salt Lake City, UT) to Houston Hobby (Houston, TX). Every scheduled flight, September 2025 to August 2026.

On time
81%
arrived < 15 min late
Cancelled
0.2%
409 flights
Typical arrival
−5 min
median vs schedule
When late
+46 min
average delay
Flights / day
1
1 airline

81% of flights from Salt Lake City to Houston arrived on time over the past 12 months. That is about the typical U.S. route. 5% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for SLC → HOU: when a flight was late, it was under 45 minutes late 64% of the time. About 1 in 24 flights landed an hour or more late, and 1 in 409 three hours or more; 0.2% were cancelled outright.

Share of all 409 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Southwest Airlines40981%0.2%−5 min4.2%+46 minSouthwest Airlines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at SLC). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%5 a.m. departures: too few flights (81 flights)5a6 a.m. departures: too few flights (65 flights)6a7 a.m. departures: too few flights (17 flights)7a8 a.m. departures: too few flights (13 flights)8a9 a.m. departures: too few flights (27 flights)9a10 a.m. departures: too few flights (12 flights)10a11 a.m. departures: too few flights (27 flights)11anoon departures: too few flights (4 flights)12p1 p.m. departures: too few flights (51 flights)1p2 p.m. departures: too few flights (88 flights)2p3 p.m. departures: too few flights (23 flights)3p
SLC → HOU, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

By month

Each calendar month pooled over 2023–2026. Best: January (84%). Worst: July (66%).

40%70%100%Jan: 84% on time (100 flights)84JanFeb: too few flights (93 flights)FebMar: 75% on time (110 flights)75MarApr: too few flights (94 flights)AprMay: too few flights (93 flights)MayJun: 75% on time (114 flights)75JunJul: 66% on time (116 flights)66JulAug: 72% on time (109 flights)72AugSep: too few flights (98 flights)SepOct: too few flights (93 flights)OctNov: too few flights (91 flights)NovDec: too few flights (93 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday53——
Tuesday52——
Wednesday52——
Thursday52——
Friday52——
Saturday73——
Sunday75——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Late inbound plane 42%Airline (crew, maintenance, ops) 40%Air traffic & airport (NAS) 19%

Cancellations: air traffic/airport 1

Month by month

Not enough months with data to draw a trend.

Nearby airport alternatives

Other ways to make the same trip, using airports within 60 miles of Salt Lake City or Houston. SLC → IAH has been 5 points more reliable.

RouteFlightsOn timeCancelled
SLC → HOU (this route)40981%0.2%
SLC → IAH Salt Lake City to Houston Bush Intercontinental2,18285%0.7%

Questions

How often are flights from SLC to HOU on time?

81% of 409 scheduled flights from Salt Lake City, UT to Houston, TX arrived within 15 minutes of schedule between September 2025 and August 2026. 0.2% were cancelled.

What month has the most delays from SLC to HOU?

July (66% on time). The best month is January (84%), over 2023–2026.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.