IAD to BZN flight delays & on-time performance
Nonstop flights from Washington Dulles International Airport to Bozeman Yellowstone International Airport · 1,773 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAD or BZN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (IAD) to Bozeman (BZN) arrived on time 86% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 4% arrived an hour or more late.
- United Airlines is the only airline reporting nonstop flights on this route.
- Sunday was the most reliable day to fly (100% on time) and Saturday the least (79%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (54%).
Which airline is most on time from IAD to BZN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 86% | 0.0% | 7 min | 3.9% | 51 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
Not enough departures across different hours to compare.
Best day of the week
On-time arrival rate by day of departure.
- Saturday79%0.0% cancelled
- Sunday100%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)54%
- Air traffic control & airport congestion40%
- Late-arriving aircraft5%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
IAD to BZN: common questions
- How often are IAD to BZN flights on time?
- 86% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Washington to Bozeman cancelled?
- 0.0% of scheduled flights were cancelled (0 of 51).
- How long are typical delays?
- Across all flights the average arrival delay was 7 min (early arrivals count as zero). Flights that were late arrived 45 min behind schedule on average, and 3.9% of flights were an hour or more late.
- How long is taxi time at IAD?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BZN to IAD — 72% on time
More flights from Washington
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAD → BZN, nonstop flights by US airlines that report to the DOT. How we calculate this.