Historical on-time performance
Washington to Portland
Flights on DCA–PWM arrive on time 66% of the time over the last 12 months.
based on 867 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.
- American AirlinesOn-time68%Medianon timep9055 minCancel2.6%Flights547
- PSA AirlinesOn-time63%Medianon timep9065 minCancel4.1%Flights320
Why flights run late
Delay causes
- Airline27%
- Weather3%
- Air traffic (NAS)12%
- Late aircraft58%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline7%
- Weather85%
- Air traffic (NAS)7%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 27 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 DCA → PWM
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 63% to 77% on time.
- Mornings77% on time · p90 35 min · 279 flights
- Middays77% on time · p90 35 min · 1,286 flights
- Afternoons70% on time · p90 60 min · 1,069 flights
- Overnights63% on time · p90 65 min · 985 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 81% on time.
- Saturdays81% on time · p90 35 min · 402 flights
- Tuesdays76% on time · p90 35 min · 536 flights
- Wednesdays72% on time · p90 45 min · 537 flights
- Fridays69% on time · p90 60 min · 537 flights
- Thursdays69% on time · p90 65 min · 534 flights
- Sundays68% on time · p90 55 min · 546 flights
- Mondays67% on time · p90 65 min · 539 flights
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