ON TIMEBOARD

IAH → IND on time

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

On time
84%
arrived < 15 min late
Cancelled
0.5%
1,409 flights
Typical arrival
−8 min
median vs schedule
When late
+63 min
average delay
Flights / day
4
1 airline

84% of flights from Houston to Indianapolis arrived on time over the past 12 months. That is better than the typical U.S. route. The 7 a.m. departures ran on time 92% of the time; the 7 p.m. ones 74%. 6% 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 → IND: when a flight was late, it was under 45 minutes late 55% of the time. About 1 in 20 flights landed an hour or more late, and 1 in 117 three hours or more; 0.5% were cancelled outright.

Share of all 1,409 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
United Airlines1,40984%0.5%−8 min5.1%+63 minMesa Airlines 55%, United Airlines 45%

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%7 a.m. departures: 92% on time (321 flights)927a8 a.m. departures: too few flights8a9 a.m. departures: too few flights9a10 a.m. departures: too few flights10a11 a.m. departures: 86% on time (100 flights)8611anoon departures: 88% on time (265 flights)8812p1 p.m. departures: too few flights1p2 p.m. departures: too few flights2p3 p.m. departures: too few flights3p4 p.m. departures: 83% on time (288 flights)834p5 p.m. departures: too few flights (45 flights)5p6 p.m. departures: too few flights (51 flights)6p7 p.m. departures: 74% on time (129 flights)747p8 p.m. departures: 75% on time (210 flights)758p
IAH → IND, 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 → IND, each airline's last flight of the day was cancelled 0.5% of the time, against 0.5% for its earlier flights, about the same. It arrived 3+ hours late 0.8% of the time (earlier flights: 0.9%). 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 Airlines7:59 p.m.0.5%0.8%0.5%first flight 7:25 a.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: February (88%). Worst: June (69%).

40%70%100%Jan: 83% on time (301 flights)83JanFeb: 88% on time (294 flights)88FebMar: 83% on time (333 flights)83MarApr: 83% on time (360 flights)83AprMay: 72% on time (366 flights)72MayJun: 69% on time (337 flights)69JunJul: 71% on time (340 flights)71JulAug: 81% on time (355 flights)81AugSep: 82% on time (316 flights)82SepOct: 83% on time (325 flights)83OctNov: 87% on time (300 flights)87NovDec: 87% on time (283 flights)87Dec

By day of week

DayFlightsOn timeCancelled
Monday21283%0.5%
Tuesday19482%0.5%
Wednesday19587%0.0%
Thursday20686%0.0%
Friday20685%0.0%
Saturday18983%1.6%
Sunday20783%1.0%

Why flights were late

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

Airline (crew, maintenance, ops) 42%Late inbound plane 38%Air traffic & airport (NAS) 13%Severe weather 6%

Cancellations: weather 7

Month by month

40%70%100%Sep 2023Jan 2024Jan 2025Jan 2026Apr 2024: 80% on time, 1.7% cancelledMay 2024: 54% on time, 8.9% cancelledJun 2024: 68% on time, 2.7% cancelledJul 2024: 54% on time, 4.6% cancelledAug 2024: 77% on time, 0.9% cancelledSep 2024: 78% on time, 0.0% cancelledOct 2024: 89% on time, 0.0% cancelledFeb 2025: 86% on time, 0.0% cancelledMar 2025: 86% on time, 0.0% cancelledApr 2025: 83% on time, 0.0% cancelledMay 2025: 80% on time, 1.6% cancelledJun 2025: 65% on time, 3.3% cancelledJul 2025: 76% on time, 1.6% cancelledAug 2025: 76% on time, 0.8% cancelledSep 2025: 90% on time, 0.0% cancelledOct 2025: 81% on time, 0.0% cancelledNov 2025: 81% on time, 0.0% cancelledDec 2025: 85% on time, 0.0% cancelledJan 2026: 84% on time, 3.2% cancelledFeb 2026: 92% on time, 0.0% cancelledMar 2026: 79% on time, 2.4% cancelledApr 2026: 87% on time, 0.0% cancelledMay 2026: 83% on time, 0.0% cancelledJun 2026: 74% on time, 0.0% cancelledJul 2026: 84% on time, 0.0% cancelledAug 2026: 90% on time, 0.0% cancelled
Share of flights on time, by month (hover a point for cancellations)
IAH → IND, 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 61627:25 a.m.26392%0.4%−9 minMesa Airlines
UA 168712:30 p.m.35788%0.3%−7 minUnited Airlines
UA 4657:59 p.m.25675%0.0%−6 minUnited Airlines

Worst days in the past year

DateFlightsOn timeCancelled
Jan 27, 202640%0
Jun 21, 202640%0
May 23, 202630%0
May 1, 2026425%0
Nov 21, 2025425%0

Nearby airport alternatives

Other ways to make the same trip, using airports within 60 miles of Houston or Indianapolis. None has been clearly more reliable than IAH → IND.

RouteFlightsOn timeCancelled
IAH → IND (this route)1,40984%0.5%
HOU → IND Houston Hobby to Indianapolis49274%0.6%

Questions

How often are flights from IAH to IND on time?

84% of 1,409 scheduled flights from Houston, TX to Indianapolis, IN arrived within 15 minutes of schedule between September 2025 and August 2026. 0.5% were cancelled.

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

Flights scheduled to leave at 7 a.m. were the most reliable (92% on time). The 7 p.m. departures were the least (74%).

What month has the most delays from IAH to IND?

June (69% on time). The best month is February (88%), over 2023–2026.

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

Not much. Each airline's last IAH–IND flight of the day was cancelled 0.5% of the time over the past year, against 0.5% 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.