Historical on-time performance
Phoenix to Boston
Flights on PHX–BOS arrive on time 76% of the time over the last 12 months.
based on 1,961 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-time77%Medianon timep9040 minCancel1.7%Flights1,316
- Delta Air LinesOn-time76%Medianon timep9045 minCancel2.5%Flights399
- JetBlue AirwaysOn-time72%Medianon timep9045 minCancel0.8%Flights246
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)25%
- Late aircraft43%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline23%
- Weather74%
- Air traffic (NAS)3%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 35 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 PHX → BOS
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 73% to 81% on time.
- Mornings81% on time · p90 30 min · 1,062 flights
- Evenings81% on time · p90 35 min · 198 flights · limited
- Overnights79% on time · p90 40 min · 2,641 flights
- Middays75% on time · p90 45 min · 1,518 flights
- Afternoons73% on time · p90 55 min · 905 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 82% on time.
- Tuesdays82% on time · p90 35 min · 845 flights
- Saturdays81% on time · p90 30 min · 897 flights
- Wednesdays79% on time · p90 40 min · 858 flights
- Mondays78% on time · p90 45 min · 912 flights
- Sundays74% on time · p90 45 min · 952 flights
- Fridays74% on time · p90 60 min · 927 flights
- Thursdays74% on time · p90 55 min · 937 flights
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