Historical on-time performance
Houston to Springfield
513 miData through Dec 2025Source: US DOT · BTS
Flights on IAH–SGF arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled2.4%of scheduled flights
based on 500 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time70%Medianon timep9080 minCancel2.4%Flights500
Why flights run late
Delay causes
- Airline32%
- Weather9%
- Air traffic (NAS)11%
- Late aircraft47%
- Security1%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAH → SGF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 68% to 74% on time.
- Overnights74% on time · p90 45 min · 280 flights
- Middays71% on time · p90 60 min · 230 flights
- Afternoons69% on time · p90 105 min · 189 flights · limited
- Evenings68% on time · p90 90 min · 69 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 80% on time.
- Saturdays80% on time · p90 40 min · 99 flights · limited
- Tuesdays78% on time · p90 30 min · 103 flights · limited
- Thursdays72% on time · p90 60 min · 115 flights · limited
- Sundays70% on time · p90 90 min · 115 flights · limited
- Fridays69% on time · p90 110 min · 114 flights · limited
- Wednesdays66% on time · p90 80 min · 106 flights · limited
- Mondays65% on time · p90 135 min · 116 flights · limited
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