Delta Air Lines ATL to BUF on-time performance
Delta Air Lines nonstop flights from Atlanta to Buffalo · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
1.8%
23 flights
Avg arrival delay
12 min
53 min when late
Rank on route
#1 of 3
route average 77% on time
Key facts
- Delta Air Lines flights on ATL to BUF arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 1.8% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (38%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)38%
- Late-arriving aircraft32%
- Air traffic control & airport congestion21%
- Extreme weather10%
- Security0%
Other airlines on ATL to BUF
- Frontier Airlines66% on time · 29 min avg delay
- Southwest Airlines0% on time · 92 min avg delay
Full ATL to BUF comparison →
Delta Air Lines on-time record across all routes →
1,250 Delta Air Lines flights tracked on this route; 23 cancelled, 1 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.