ON TIMEBOARD
HOU Houston / SLC Salt Lake City

HOU → SLC on time

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

On time
78%
arrived < 15 min late
Cancelled
0.5%
410 flights
Typical arrival
−3 min
median vs schedule
When late
+46 min
average delay
Flights / day
1
1 airline

78% of flights from Houston to Salt Lake City arrived on time over the past 12 months. That is about the typical U.S. route. 4% 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 HOU → SLC: when a flight was late, it was under 45 minutes late 71% of the time. About 1 in 32 flights landed an hour or more late, and 1 in 205 three hours or more; 0.5% were cancelled outright.

Share of all 410 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Southwest Airlines41078%0.5%−3 min3.2%+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 HOU). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%8 a.m. departures: 85% on time (162 flights)858a9 a.m. departures: too few flights (23 flights)9a10 a.m. departures: too few flights (5 flights)10a11 a.m. departures: too few flights (83 flights)11anoon departures: too few flights (25 flights)12p1 p.m. departures: too few flights (9 flights)1p2 p.m. departures: too few flights (39 flights)2p
HOU → SLC, 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 (81%). Worst: June (70%).

40%70%100%Jan: 81% on time (100 flights)81JanFeb: too few flights (93 flights)FebMar: 77% on time (111 flights)77MarApr: too few flights (94 flights)AprMay: too few flights (93 flights)MayJun: 70% on time (114 flights)70JunJul: 71% on time (116 flights)71JulAug: 79% on time (109 flights)79AugSep: 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——
Saturday74——
Sunday75——

Why flights were late

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

Airline (crew, maintenance, ops) 57%Late inbound plane 30%Air traffic & airport (NAS) 12%Severe weather 1%

Cancellations: airline 1 · air traffic/airport 1

Month by month

Not enough months with data to draw a trend.

Worst days in the past year

DateFlightsOn timeCancelled
Mar 7, 202630%0

Nearby airport alternatives

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

RouteFlightsOn timeCancelled
HOU → SLC (this route)41078%0.5%
IAH → SLC Houston Bush Intercontinental to Salt Lake City2,18383%0.4%

Questions

How often are flights from HOU to SLC on time?

78% of 410 scheduled flights from Houston, TX to Salt Lake City, UT arrived within 15 minutes of schedule between September 2025 and August 2026. 0.5% were cancelled.

What month has the most delays from HOU to SLC?

June (70% on time). The best month is January (81%), 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.