Historical on-time performance
Atlanta to Buffalo
712 miData through Dec 2025Source: US DOT · BTS
Flights on ATL–BUF arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.9%of scheduled flights
based on 1,175 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time78%Medianon timep9035 minCancel1.9%Flights1,175
Why flights run late
Delay causes
- Airline46%
- Weather12%
- Air traffic (NAS)17%
- Late aircraft25%
- Security1%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ATL → BUF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 85% on time.
- Mornings85% on time · p90 20 min · 1,173 flights
- Middays77% on time · p90 40 min · 576 flights
- Overnights76% on time · p90 45 min · 1,075 flights
- Afternoons74% on time · p90 45 min · 1,099 flights
- Evenings51% on time · p90 95 min · 57 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 83% on time.
- Wednesdays83% on time · p90 30 min · 529 flights
- Tuesdays82% on time · p90 35 min · 548 flights
- Thursdays79% on time · p90 35 min · 610 flights
- Mondays78% on time · p90 45 min · 583 flights
- Saturdays78% on time · p90 30 min · 524 flights
- Fridays77% on time · p90 45 min · 580 flights
- Sundays72% on time · p90 50 min · 606 flights
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