Historical on-time performance
New York to Boston
187 miData through May 2026Source: US DOT · BTS
Flights on JFK–BOS arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled4.2%of scheduled flights
based on 5,733 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysbestOn-time74%Medianon timep9060 minCancel4.6%Flights2,916
- JetBlue AirwaysOn-time66%Medianon timep9080 minCancel3.8%Flights2,477
- Delta Air LinesOn-time64%Medianon timep90110 minCancel2.6%Flights340
Why flights run late
Delay causes
- Airline24%
- Weather1%
- Air traffic (NAS)35%
- Late aircraft40%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline13%
- Weather36%
- Air traffic (NAS)52%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 239 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 JFK → BOS
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 4,645 flights
- Middays75% on time · p90 50 min · 2,648 flights
- Overnights68% on time · p90 80 min · 4,366 flights
- Afternoons66% on time · p90 85 min · 2,829 flights
- Evenings60% on time · p90 100 min · 2,427 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 76% on time.
- Wednesdays76% on time · p90 55 min · 2,412 flights
- Tuesdays76% on time · p90 55 min · 2,418 flights
- Saturdays75% on time · p90 55 min · 2,431 flights
- Thursdays72% on time · p90 75 min · 2,419 flights
- Fridays72% on time · p90 70 min · 2,407 flights
- Mondays71% on time · p90 65 min · 2,405 flights
- Sundays67% on time · p90 80 min · 2,423 flights
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