BUF (Buffalo) to IAD (Washington) flights arrive on time 88% of the time. The most reliable airline on this route is Republic Airways at 89%. The average delay is 74 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.BUF → IAD
BUF (Buffalo) to IAD (Washington)
BUF → IAD on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is usually on time. About 88% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Airlines are roughly equal on this route — Republic Airways leads slightly at 89% vs United Airlines at 85%.
Airline Comparison
Republic Airways leads at 89% on time; United Airlines trails at 85%.
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 IAD
83% on timeWhen flights into IAD are late, the average delay is 74 minutes. Build buffer if you have ground plans.
If connecting at IAD: TSA is ~8 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Republic Airways 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.