PlainFlights

Route · IAD → BNA · 2020–2025 BTS data

Washington to Nashville

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAD to BNA (Washington to Nashville) ranks #2200 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.3%
On-time
+3.3 pts
vs US avg
86 min
Delay when late
5,707
Flights
#2200 of 4927
Corpus placement

Cancelled

0.4%

Best Month

Feb 2024 94%

Worst Month

May 2025 67%

Distance

542 mi

Carriers

21

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 71 18 0 1 YX,UA
Nov 2025 88 17 0 0 UA,WN
Oct 2025 93 16 0 0 UA
Sep 2025 79 7 0 0 UA
Aug 2025 100 16 0 0 G4,UA
Jul 2025 101 19 1 2 UA,G4
Jun 2025 119 32 0 0 UA,G4
May 2025 105 35 0 1 UA,G4
Apr 2025 81 23 0 1 UA,YX
Mar 2025 64 10 0 0 UA
Feb 2025 56 9 0 0 UA
Jan 2025 58 12 2 0 YX,UA
Dec 2024 63 11 0 0 UA
Nov 2024 89 11 0 0 UA
Oct 2024 93 11 0 0 UA
Sep 2024 90 10 0 0 UA
Aug 2024 89 13 0 0 G4,UA
Jul 2024 91 17 1 2 G4,UA
Jun 2024 89 15 0 0 G4,UA
May 2024 102 21 0 0 G4,UA
Apr 2024 98 9 0 0 G4,UA
Mar 2024 72 14 0 0 G4,UA
Feb 2024 67 4 0 0 G4,UA
Jan 2024 69 12 4 0 G4,UA

IAD–BNA seasonal on-time pattern

Best: September (88.4%) · weakest: July (74.2%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 83.9%

Strongest calendar month

September

88.4% on-time · ~79 flights/mo

Busiest calendar month

August

~87 flights/mo avg

Weakest calendar month

July

74.2% on-time · ~86 flights/mo

Cancellation Rate

0.4%

8 of 2,027 flights

Diversion Rate

0.3%

7 of 2,027 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

IAD - Washington

Full on-time, delay-cause, and seasonal performance for Washington, DC.

IAD on-time profile

BNA - Nashville

Full on-time, delay-cause, and seasonal performance for Nashville, TN.

BNA on-time profile

Compare the two airports

See IAD and BNA side by side on delays, cancellations, and reliability.

Compare IAD vs BNA

Origin-hub reliability standing

Mid-pack among IAD departures

From IAD, this corridor sits with 42 other 75–85% on-time routes out of 58 tracked departures, not the hub's reliability leaders (14 at ≥85%) and not the softest ( 2 below 75%). Destination: Nashville · fleet on-time rank #2231 of 4927.

What the Data Says About IAD to BNA

Bureau of Transportation Statistics records show Washington to Nashville (IAD to BNA) running a 82.3% on-time rate over 5,707 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 85.7 minutes. The 542-mile corridor is served by 21 carriers, and over the last 24 months 0.4% of 2,027 flights were cancelled, 0.3% diverted.

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 94% on-time, while May 2025 came in at just 67% - a 27-point swing worth factoring into travel timing.

On the multi-year calendar, IAD–BNA peaks in September at 88.4% on-time while August carries the heaviest traffic (~87 flights per month) ; the softest month is July at 74.2%, a 14.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAD to BNA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAD to BNA ranks #2200 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from IAD to BNA? ▼
Flights from Washington to Nashville have a 82.3% on-time rate based on 5,707 flights. The average delay is 85.7 minutes. The best recent month was Feb 2024 with 94% on-time.
What is the cancellation rate for IAD to BNA? ▼
Over the last 24 months, 0.4% of flights on this route were cancelled (8 of 2,027 flights) and 0.3% were diverted.
How far is the flight from IAD to BNA? ▼
The flight distance from Washington (IAD) to Nashville (BNA) is approximately 542 miles. This route is served by 21 carriers.
When is the best time to fly from IAD to BNA? ▼
The best recent month for on-time performance was Feb 2024 (94% on-time). The worst was May 2025 (67% on-time). Consider booking during months with historically better performance.

Airports on this route

IAD Airport

Washington
BNA Airport

Nashville
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using IAD–BNA data

IAD–BNA runs 3.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare IAD and BNA airport profiles: delay causes and top routes differ even on the same corridor. IAD airport
  • If your dates flex, September (88.4% on-time) beats July (74.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.3% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.