Historical on-time performance
Washington to Portland
482 miData through Dec 2025Source: US DOT · BTS
Flights on DCA–PWM arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled4.3%of scheduled flights
based on 1,093 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.
- Republic AirwaysOn-time66%Medianon timep9035 minCancel0.0%Flights53
- PSA AirlinesOn-time65%Medianon timep9070 minCancel7.9%Flights494
- American AirlinesOn-time73%Medianon timep9055 minCancel1.5%Flights546
Why flights run late
Delay causes
- Airline25%
- Weather4%
- Air traffic (NAS)10%
- Late aircraft61%
- 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 DCA → PWM
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 67% to 83% on time.
- Mornings83% on time · p90 25 min · 172 flights · limited
- Middays79% on time · p90 30 min · 1,388 flights
- Afternoons71% on time · p90 65 min · 1,071 flights
- Overnights67% on time · p90 60 min · 975 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 81% on time.
- Saturdays81% on time · p90 40 min · 390 flights
- Tuesdays78% on time · p90 30 min · 539 flights
- Wednesdays75% on time · p90 45 min · 539 flights
- Fridays72% on time · p90 55 min · 534 flights
- Sundays72% on time · p90 50 min · 544 flights
- Thursdays71% on time · p90 65 min · 530 flights
- Mondays70% on time · p90 60 min · 541 flights
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