IAD (Washington) to BZN (Bozeman) flights arrive on time 90% of the time. The most reliable airline on this route is United Airlines at 90%. The average delay is 39 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.IAD → BZN
IAD (Washington) to BZN (Bozeman)
IAD → BZN on-time performance by month
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is usually on time. About 90% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Accurate?
Good to know
Departing from IAD
83% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. IAD has long runway queues.
TSA is currently ~8 min. Best time: 4 AM (about 5 min).
Arriving at BZN
81% on timeWhen flights into BZN are late, the average delay is 68 minutes. Build buffer if you have ground plans.
If connecting at BZN: TSA is ~9 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what United 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.