Historical on-time performance
Atlanta to Boston
946 miData through May 2026Source: US DOT · BTS
Flights on ATL–BOS arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights
based on 4,731 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time74%Medianon timep9050 minCancel1.8%Flights3,658
- JetBlue AirwaysOn-time69%Medianon timep9070 minCancel2.7%Flights846
- Frontier AirlinesOn-time61%Medianon timep9070 minCancel2.2%Flights227
Why flights run late
Delay causes
- Airline36%
- Weather4%
- Air traffic (NAS)36%
- Late aircraft23%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline31%
- Weather55%
- Air traffic (NAS)14%
- 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 ATL → 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 — 86% on time.
- Mornings86% on time · p90 20 min · 3,848 flights
- Middays77% on time · p90 45 min · 4,054 flights
- Overnights70% on time · p90 60 min · 2,430 flights
- Afternoons70% on time · p90 60 min · 2,369 flights
- Evenings69% on time · p90 70 min · 2,259 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 81% on time.
- Wednesdays81% on time · p90 35 min · 2,052 flights
- Saturdays80% on time · p90 35 min · 1,959 flights
- Tuesdays80% on time · p90 35 min · 2,040 flights
- Thursdays75% on time · p90 50 min · 2,222 flights
- Mondays74% on time · p90 55 min · 2,236 flights
- Fridays73% on time · p90 50 min · 2,244 flights
- Sundays71% on time · p90 55 min · 2,207 flights
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