Historical on-time performance
Atlanta to Portland
2,172 miData through Dec 2025Source: US DOT · BTS
Flights on ATL–PDX arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 1,539 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesOn-time71%Medianon timep9065 minCancel0.4%Flights245
- Delta Air LinesbestOn-time79%Medianon timep9030 minCancel0.6%Flights1,294
Why flights run late
Delay causes
- Airline35%
- Weather14%
- Air traffic (NAS)27%
- Late aircraft24%
- Security1%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ATL → 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 — 90% on time.
- Middays90% on time · p90 10 min · 546 flights
- Mornings84% on time · p90 25 min · 1,073 flights
- Afternoons80% on time · p90 40 min · 838 flights
- Evenings77% on time · p90 40 min · 1,562 flights
- Overnights70% on time · p90 60 min · 175 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 84% on time.
- Tuesdays84% on time · p90 25 min · 571 flights
- Wednesdays82% on time · p90 25 min · 583 flights
- Mondays81% on time · p90 35 min · 628 flights
- Saturdays80% on time · p90 35 min · 546 flights
- Fridays79% on time · p90 40 min · 626 flights
- Thursdays79% on time · p90 30 min · 620 flights
- Sundays78% on time · p90 35 min · 620 flights
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