Historical on-time performance
Nantucket to Philadelphia
289 miData through May 2026Source: US DOT · BTS
Flights on ACK–PHL arrive on time 40% of the time over the last 12 months.
On-time rate40%arrived within 15 min
p90 delay85 min1 in 10 flights is worse (tail risk)
Cancelled10.4%of scheduled flights
based on 67 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time40%Median15 minp9085 minCancel10.4%Flights67
Why flights run late
Delay causes
- Airline5%
- Weather0%
- Air traffic (NAS)54%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather86%
- Air traffic (NAS)14%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 7 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
Keep exploring