BUF (Buffalo) to RDU (Raleigh) flights arrive on time 85% of the time. The most reliable airline on this route is Frontier Airlines at 85%. The average delay is 54 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated May 2026.BUF → RDU
BUF (Buffalo) to RDU (Raleigh)
BUF → RDU on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 85% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Accurate?
Good to know
Departing from BUF
79% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. BUF has long runway queues.
TSA is currently ~12 min. Best time: 4 AM (about 5 min).
BUF cancels 2.7% of flights — higher than average. Have a backup plan.
Arriving at RDU
80% on timeWhen flights into RDU are late, the average delay is 72 minutes. Build buffer if you have ground plans.
If connecting at RDU: TSA is ~18 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Frontier Airlines 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.