Historical on-time performance
Chicago to Seattle
Flights on ORD–SEA arrive on time 68% of the time over the last 12 months.
based on 5,561 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time73%Medianon timep9045 minCancel0.6%Flights1,540
- Delta Air LinesOn-time66%Medianon timep9050 minCancel1.2%Flights898
- Alaska AirlinesOn-time66%Medianon timep9055 minCancel1.4%Flights1,803
- American AirlinesOn-time64%Medianon timep9070 minCancel2.0%Flights1,320
Why flights run late
Delay causes
- Airline30%
- Weather6%
- Air traffic (NAS)23%
- Late aircraft40%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline27%
- Weather58%
- Air traffic (NAS)15%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 73 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 ORD → SEA
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 59% to 81% on time.
- Mornings81% on time · p90 25 min · 5,290 flights
- Middays81% on time · p90 30 min · 2,618 flights
- Afternoons76% on time · p90 40 min · 2,805 flights
- Evenings62% on time · p90 70 min · 3,480 flights
- Overnights59% on time · p90 70 min · 1,455 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 76% on time.
- Saturdays76% on time · p90 45 min · 1,960 flights
- Tuesdays76% on time · p90 40 min · 2,178 flights
- Wednesdays75% on time · p90 45 min · 2,172 flights
- Mondays73% on time · p90 50 min · 2,345 flights
- Thursdays73% on time · p90 45 min · 2,353 flights
- Sundays72% on time · p90 45 min · 2,286 flights
- Fridays71% on time · p90 45 min · 2,354 flights
Keep exploring