Historical on-time performance
Dallas to Chicago
798 miData through May 2026Source: US DOT · BTS
Flights on DAL–ORD arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 565 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time68%Medianon timep9060 minCancel0.5%Flights565
Why flights run late
Delay causes
- Airline29%
- Weather3%
- Air traffic (NAS)34%
- Late aircraft34%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 3 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 DAL → ORD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 90% on time.
- Mornings90% on time · p90 10 min · 1,055 flights
- Middays75% on time · p90 35 min · 977 flights
- Afternoons74% on time · p90 45 min · 450 flights
- Evenings63% on time · p90 80 min · 578 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 82% on time.
- Saturdays82% on time · p90 35 min · 327 flights
- Mondays79% on time · p90 25 min · 490 flights
- Tuesdays79% on time · p90 35 min · 460 flights
- Wednesdays78% on time · p90 40 min · 459 flights
- Thursdays75% on time · p90 45 min · 489 flights
- Sundays75% on time · p90 50 min · 435 flights
- Fridays74% on time · p90 45 min · 491 flights
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