Historical on-time performance
Chicago to Santa Ana
1,726 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–SNA arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 2,281 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- United AirlinesOn-time77%Medianon timep9035 minCancel0.1%Flights1,040
- American AirlinesOn-time79%Medianon timep9030 minCancel1.2%Flights1,241
Why flights run late
Delay causes
- Airline31%
- Weather7%
- Air traffic (NAS)21%
- Late aircraft40%
- Security0%
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 ORD → SNA
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 77% to 84% on time.
- Mornings84% on time · p90 25 min · 2,768 flights
- Overnights82% on time · p90 10 min · 110 flights · limited
- Afternoons79% on time · p90 40 min · 998 flights
- Middays78% on time · p90 35 min · 957 flights
- Evenings77% on time · p90 35 min · 1,885 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 85% on time.
- Tuesdays85% on time · p90 20 min · 966 flights
- Mondays82% on time · p90 25 min · 1,006 flights
- Saturdays81% on time · p90 30 min · 769 flights
- Thursdays80% on time · p90 30 min · 992 flights
- Wednesdays79% on time · p90 35 min · 974 flights
- Fridays78% on time · p90 30 min · 1,001 flights
- Sundays77% on time · p90 40 min · 1,010 flights
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