IAD to BNA flight delays & on-time performance
Nonstop flights from Washington Dulles International Airport to Nashville International Airport · 542 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAD or BNA 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 Nashville (BNA) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.8% were cancelled, and 7% arrived an hour or more late.
- Departures scheduled around 8am did best (91% on time); around 5pm did worst (75%).
- Monday was the most reliable day to fly (85% on time) and Sunday the least (77%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from IAD to BNA?
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 100% | 0.0% | 0 min | 0.0% | 1 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 89% | 0.0% | 6 min | 2.7% | 38 |
| United Airlines | 82% | 0.8% | 15 min | 6.8% | 932 |
| Allegiant Air | 65% | 2.6% | 26 min | 13.5% | 38 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am91%258 flights
- 9am84%19 flights
- 12pm88%221 flights
- 1pm76%117 flights
- 3pm71%15 flights
- 5pm75%354 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday85%0.7% cancelled
- Tuesday79%0.0% cancelled
- Wednesday81%0.7% cancelled
- Thursday81%0.6% cancelled
- Friday84%0.0% cancelled
- Saturday85%0.8% cancelled
- Sunday77%2.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft44%
- Air traffic control & airport congestion24%
- Airline (crew, maintenance, cleaning, fueling)23%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)63%
- Extreme weather38%
- Air traffic control & airport congestion0%
- Security0%
IAD to BNA: common questions
- How often are IAD to BNA flights on time?
- 82% 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 Nashville cancelled?
- 0.8% of scheduled flights were cancelled (8 of 1,009).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 78 min behind schedule on average, and 6.9% of flights were an hour or more late.
- How long is taxi time at IAD?
- Flights on this route spent 23 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BNA to IAD — 79% 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 → BNA, nonstop flights by US airlines that report to the DOT. How we calculate this.