Historical on-time performance
Boston to Atlanta
946 miData through May 2026Source: US DOT · BTS
Flights on BOS–ATL arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights
based on 4,732 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time80%Medianon timep9040 minCancel1.9%Flights3,656
- JetBlue AirwaysOn-time67%Medianon timep9075 minCancel2.4%Flights849
- Frontier AirlinesOn-time60%Medianon timep9045 minCancel2.6%Flights227
Why flights run late
Delay causes
- Airline34%
- Weather1%
- Air traffic (NAS)22%
- Late aircraft43%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline33%
- Weather55%
- Air traffic (NAS)12%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 94 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 BOS → ATL
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 61% to 84% on time.
- Middays84% on time · p90 25 min · 3,476 flights
- Mornings83% on time · p90 25 min · 5,223 flights
- Evenings70% on time · p90 60 min · 2,310 flights
- Afternoons70% on time · p90 65 min · 2,892 flights
- Overnights61% on time · p90 85 min · 1,052 flights
Best day of week
Wednesdays are the most reliable day to fly this route — 84% on time.
- Wednesdays84% on time · p90 25 min · 2,049 flights
- Tuesdays81% on time · p90 30 min · 2,044 flights
- Saturdays78% on time · p90 40 min · 1,949 flights
- Thursdays78% on time · p90 45 min · 2,215 flights
- Fridays75% on time · p90 50 min · 2,246 flights
- Mondays74% on time · p90 55 min · 2,239 flights
- Sundays72% on time · p90 60 min · 2,211 flights
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