Historical on-time performance
Houston to Springfield
513 miData through May 2026Source: US DOT · BTS
Flights on IAH–SGF arrive on time 67% of the time over the last 12 months.
On-time rate67%arrived within 15 min
p90 delay105 min1 in 10 flights is worse (tail risk)
Cancelled2.5%of scheduled flights
based on 159 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time67%Medianon timep90105 minCancel2.5%Flights159
Why flights run late
Delay causes
- Airline40%
- Weather10%
- Air traffic (NAS)17%
- Late aircraft34%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather75%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 4 cancellations with a reported cause (BTS reports causes from June 2003).
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 (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 69% to 73% on time.
- Overnights73% on time · p90 45 min · 282 flights
- Middays71% on time · p90 60 min · 230 flights
- Afternoons69% on time · p90 105 min · 189 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 35 min · 101 flights · limited
- Tuesdays77% on time · p90 30 min · 105 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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