ON TIMEBOARD

IAH → SHV on time

Houston Bush Intercontinental (Houston, TX) to Shreveport (Shreveport, LA). Every scheduled flight, September 2025 to August 2026.

On time
77%
arrived < 15 min late
Cancelled
1.7%
1,566 flights
Typical arrival
−5 min
median vs schedule
When late
+87 min
average delay
Flights / day
4
1 airline

77% of flights from Houston to Shreveport arrived on time over the past 12 months. That is about the typical U.S. route. The noon departures ran on time 84% of the time; the 4 p.m. ones 73%. 10% 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 IAH → SHV: when a flight was late, it was under 45 minutes late 53% of the time. About 1 in 13 flights landed an hour or more late, and 1 in 60 three hours or more; 1.7% were cancelled outright.

Share of all 1,566 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
United Airlines1,56677%1.7%−5 min7.9%+87 minSkyWest 76%, CommutAir 23%, Mesa Airlines 1%

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 IAH). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%9 a.m. departures: too few flights (21 flights)9a10 a.m. departures: 78% on time (111 flights)7810a11 a.m. departures: too few flights11anoon departures: 84% on time (149 flights)8412p1 p.m. departures: too few flights1p2 p.m. departures: 78% on time (344 flights)782p3 p.m. departures: too few flights3p4 p.m. departures: 73% on time (263 flights)734p5 p.m. departures: too few flights5p6 p.m. departures: 74% on time (242 flights)746p7 p.m. departures: too few flights (92 flights)7p8 p.m. departures: 79% on time (206 flights)798p9 p.m. departures: 78% on time (138 flights)789p
IAH → SHV, 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

Last flight of the day

On IAH → SHV, each airline's last flight of the day was cancelled 1.4% of the time, against 1.8% for its earlier flights, so here the last flight is actually the safer one. It arrived 3+ hours late 1.9% of the time (earlier flights: 1.7%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
United Airlines9:40 p.m.1.4%1.9%1.8%first flight 2:28 p.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

By month

Each calendar month pooled over 2023–2026. Best: November (89%). Worst: June (66%).

40%70%100%Jan: 76% on time (328 flights)76JanFeb: 86% on time (311 flights)86FebMar: 81% on time (362 flights)81MarApr: 82% on time (352 flights)82AprMay: 69% on time (403 flights)69MayJun: 66% on time (458 flights)66JunJul: 68% on time (418 flights)68JulAug: 82% on time (406 flights)82AugSep: 88% on time (342 flights)88SepOct: 84% on time (401 flights)84OctNov: 89% on time (402 flights)89NovDec: 82% on time (357 flights)82Dec

By day of week

DayFlightsOn timeCancelled
Monday23577%2.5%
Tuesday20785%0.5%
Wednesday22778%0.4%
Thursday23077%0.0%
Friday23379%1.7%
Saturday20274%4.0%
Sunday23269%2.6%

Why flights were late

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

Airline (crew, maintenance, ops) 49%Late inbound plane 29%Air traffic & airport (NAS) 13%Severe weather 9%

Cancellations: weather 18 · air traffic/airport 6 · airline 2

Month by month

50%75%100%Sep 2023Jan 2024Jan 2025Jan 2026Sep 2023: 90% on time, 0.0% cancelledOct 2023: 86% on time, 0.0% cancelledNov 2023: 88% on time, 0.0% cancelledJun 2024: 72% on time, 0.0% cancelledJul 2024: 63% on time, 9.8% cancelledAug 2024: 88% on time, 0.0% cancelledSep 2024: 88% on time, 0.0% cancelledOct 2024: 92% on time, 0.0% cancelledNov 2024: 93% on time, 0.0% cancelledDec 2024: 85% on time, 2.3% cancelledJan 2025: 77% on time, 6.0% cancelledFeb 2025: 84% on time, 0.0% cancelledMar 2025: 81% on time, 1.3% cancelledApr 2025: 83% on time, 1.4% cancelledMay 2025: 72% on time, 4.5% cancelledJun 2025: 60% on time, 4.8% cancelledJul 2025: 69% on time, 2.7% cancelledAug 2025: 74% on time, 0.0% cancelledSep 2025: 85% on time, 0.0% cancelledOct 2025: 75% on time, 0.0% cancelledNov 2025: 85% on time, 2.9% cancelledDec 2025: 73% on time, 0.0% cancelledJan 2026: 72% on time, 11.3% cancelledFeb 2026: 87% on time, 0.0% cancelledMar 2026: 78% on time, 5.0% cancelledApr 2026: 78% on time, 0.8% cancelledMay 2026: 73% on time, 0.7% cancelledJun 2026: 65% on time, 0.0% cancelledJul 2026: 71% on time, 0.7% cancelledAug 2026: 84% on time, 0.0% cancelled
Share of flights on time, by month (hover a point for cancellations)
IAH → SHV, monthly on-time and cancellation rate.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
UA 57652:20 p.m.24976%1.6%−3 minSkyWest
UA 60264:35 p.m.18573%1.6%−7 minSkyWest

Worst days in the past year

DateFlightsOn timeCancelled
Jul 5, 202650%1
Jul 13, 202650%0
May 1, 202650%1
Jun 3, 202650%0
Mar 11, 202640%0

Questions

How often are flights from IAH to SHV on time?

77% of 1,566 scheduled flights from Houston, TX to Shreveport, LA arrived within 15 minutes of schedule between September 2025 and August 2026. 1.7% were cancelled.

What is the best time of day to fly IAH to SHV?

Flights scheduled to leave at noon were the most reliable (84% on time). The 4 p.m. departures were the least (73%).

What month has the most delays from IAH to SHV?

June (66% on time). The best month is November (89%), over 2023–2026.

Is the last flight of the day from IAH to SHV more likely to be cancelled?

No, the opposite. Each airline's last IAH–SHV flight of the day was cancelled 1.4% of the time over the past year, against 1.8% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

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.