Houston (IAH) to Springfield (SGF): On-Time Performance
Data through May 2026
Houston (IAH) to Springfield (SGF) is a thinner route than most in this dataset — 163 departures over the past year, roughly 3 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 72% arrived on time, noticeably below the national average of 78%.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 32 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 0.45
- last 12 months
- Duration
- 1h 53m
- scheduled
- Distance
- 513 mi
Monthly on-time trend
Best time to fly from IAH to SGF
Aim for departures around 8 p.m. (75% on-time); avoid 4 p.m. departures (69%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 65% | 47 min |
| Tuesdaybest | 80% | 16 min |
| Wednesday | 67% | 29 min |
| Thursday | 74% | 27 min |
| Friday | 71% | 48 min |
| Saturdaybest | 80% | 16 min |
| Sunday | 71% | 40 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations42%
- National airspace system9%
- Weather6%
Frequently asked questions
- How often are flights from IAH to SGF delayed?
- 28% of IAH–SGF 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 32 minutes.
- What is the best time of day to fly from IAH to SGF?
- Departures around 8 p.m. have the best record (75% on-time), while departures around 4 p.m. have the worst (69%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to SGF?
- The scheduled IAH–SGF flight time averages 1h 53m over 513 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are IAH to SGF flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from IAH to SGF?
- December 2024 was the roughest month in this dataset, with only 57% of arrivals on time. The best was September 2024 at 85%. If your dates are flexible, that 28-point gap is worth planning around.
Explore related pages
More routes from IAH
Based on 770 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.