Historical on-time performance
Dallas to Portland
1,626 miData through Dec 2025Source: US DOT · BTS
Flights on DAL–PDX arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 92 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time68%Median5 minp9040 minCancel1.1%Flights92
Why flights run late
Delay causes
- Airline35%
- Weather0%
- Air traffic (NAS)9%
- Late aircraft56%
- 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 DAL → PDX
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 75% on time.
- Middays75% on time · p90 45 min · 110 flights · limited
- Afternoons62% on time · p90 45 min · 130 flights · limited
- Evenings52% on time · p90 60 min · 100 flights · limited
Best day of week
Sundays are the most reliable day to fly this route — 76% on time.
- Sundays76% on time · p90 45 min · 68 flights · limited
- Saturdays60% on time · p90 60 min · 78 flights · limited
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