Houston (IAH) to Kansas City (MCI): On-Time Performance
Data through May 2026
Houston (IAH) to Kansas City (MCI) effectively runs on two schedules. In November 2024, 93% of arrivals were on time; in July 2025 that fell to 46% — a 47-point seasonal swing. Across the full period the route averages 74% on-time against a national 78%.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.8%
- Flights/day
- 1.1
- last 12 months
- Duration
- 2h 5m
- scheduled
- Distance
- 643 mi
Best airline from IAH to MCI
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 74% | 18 min | 1.4% | 828 |
| SkyWest Airlines | 73% | 20 min | 4.7% | 85 |
Monthly on-time trend
Best time to fly from IAH to MCI
Aim for departures around 11 a.m. (90% on-time); avoid 7 p.m. departures (47%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 19 min |
| Tuesday | 79% | 14 min |
| Wednesdaybest | 79% | 20 min |
| Thursday | 67% | 17 min |
| Friday | 74% | 17 min |
| Saturday | 73% | 21 min |
| Sunday | 71% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations38%
- National airspace system13%
- Weather4%
Frequently asked questions
- How often are flights from IAH to MCI delayed?
- 26% of IAH–MCI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from IAH to MCI?
- United Airlines has the best on-time record on this route at 74%, based on 828 flights. 2 airlines flew IAH–MCI frequently enough to compare in this period.
- What is the best time of day to fly from IAH to MCI?
- Departures around 11 a.m. have the best record (90% on-time), while departures around 7 p.m. have the worst (47%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to MCI?
- The scheduled IAH–MCI flight time averages 2h 5m over 643 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are IAH to MCI flights cancelled?
- 1.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from IAH to MCI?
- July 2025 was the roughest month in this dataset, with only 46% of arrivals on time. The best was November 2024 at 93%. If your dates are flexible, that 47-point gap is worth planning around.
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Based on 913 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.