ATL (Atlanta) to BUF (Buffalo) flights arrive on time 80% of the time. The most reliable airline on this route is Delta Air Lines at 81%. The average delay is 56 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.ATL → BUF
ATL (Atlanta) to BUF (Buffalo)
ATL → BUF on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 80% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Delta Air Lines edges out Frontier Airlines on this route — 81% vs 70% on time.
Airline Comparison
Delta Air Lines leads at 81% on time; Frontier Airlines trails at 70%.
Accurate?
Good to know
Departing from ATL
83% on timeExpect ~16 min sitting on the taxiway after your gate pushes back. ATL has long runway queues.
TSA is currently ~24 min. Best time: 4 AM (about 5 min).
Arriving at BUF
79% on timeWhen flights into BUF are late, the average delay is 71 minutes. Build buffer if you have ground plans.
If connecting at BUF: TSA is ~12 min right now. Allow at least 60 minutes for a domestic connection.
BUF has a 2.7% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
Check what Delta Air Lines owes you — refund rights, action plan, complaint email. Free.
Let us watch your flight
We worry about delays, TSA, weather, and gates so you don't have to.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated May 2026. Source: Bureau of Transportation Statistics.