PlainFlights

Route · DCA → TYS · 2020–2025 BTS data

Washington to Knoxville

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DCA to TYS (Washington to Knoxville) ranks #2497 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

76.7%
On-time
-2.3 pts
vs US avg
79 min
Delay when late
4,951
Flights
#2497 of 4927
Corpus placement

Cancelled

3.6%

Best Month

Nov 2024 86%

Worst Month

Dec 2025 51%

Distance

437 mi

Carriers

8

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 63 31 2 0 OH
Nov 2025 84 26 2 0 OH
Oct 2025 89 28 0 0 OH
Sep 2025 86 16 0 1 OH
Aug 2025 89 19 7 0 YX,OH
Jul 2025 92 37 7 0 OH,YX,MQ
Jun 2025 89 34 7 0 OH,YX,MQ
May 2025 93 25 7 0 OH,YX,MQ
Apr 2025 89 24 2 0 OH
Mar 2025 93 29 3 0 OH,YX
Feb 2025 82 37 11 0 OH,YX
Jan 2025 84 34 8 0 OH
Dec 2024 80 26 2 0 MQ,OH
Nov 2024 107 15 0 0 MQ,YX,OH
Oct 2024 89 16 0 0 MQ,YX,OH
Sep 2024 86 14 1 0 YX,OH,MQ
Aug 2024 88 26 2 0 MQ,OH
Jul 2024 89 28 4 0 MQ,OH
Jun 2024 85 27 0 0 MQ,OH,YX
May 2024 88 29 0 0 MQ,OH
Apr 2024 82 19 0 0 MQ,OH
Mar 2024 82 12 0 0 MQ,OH
Feb 2024 91 13 1 0 MQ,OH
Jan 2024 106 31 9 1 MQ,OH

DCA–TYS seasonal on-time pattern

Best: September (83.3%) · weakest: July (67.8%)

65%70%75%80%85% JanFebMarAprMayJunJulAugSepOctNovDec 74.9%

Strongest calendar month

September

83.3% on-time · ~85 flights/mo

Busiest calendar month

November

~92 flights/mo avg

Weakest calendar month

July

67.8% on-time · ~80 flights/mo

Cancellation Rate

3.6%

75 of 2,106 flights

Diversion Rate

0.1%

2 of 2,106 flights

Explore origin & destination

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

DCA - Washington

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

DCA on-time profile

TYS - Knoxville

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

TYS on-time profile

Compare the two airports

See DCA and TYS side by side on delays, cancellations, and reliability.

Compare DCA vs TYS

Origin-hub reliability standing

Mid-pack among DCA departures

From DCA, this corridor sits with 77 other 75–85% on-time routes out of 91 tracked departures, not the hub's reliability leaders (4 at ≥85%) and not the softest ( 10 below 75%). Destination: Knoxville · fleet on-time rank #4156 of 4927.

What the Data Says About DCA to TYS

The Washington to Knoxville corridor (DCA to TYS) posts a 76.7% on-time rate on the lower edge of the average band, based on 4,951 tracked flights. Late flights run 79.3 minutes behind on average. 8 carriers cover the 437-mile route; over the last 24 months, 75 of 2,106 flights were cancelled (3.6%) and 0.1% diverted.

The monthly split is wide on this route: Nov 2024 posted the strongest performance at 86% on-time, while Dec 2025 came in at just 51% - a 35-point swing worth factoring into travel timing.

On the multi-year calendar, DCA–TYS peaks in September at 83.3% on-time while November carries the heaviest traffic (~92 flights per month) ; the softest month is July at 67.8%, a 15.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does DCA to TYS rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, DCA to TYS ranks #2497 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 DCA to TYS? ▼
Flights from Washington to Knoxville have a 76.7% on-time rate based on 4,951 flights. The average delay is 79.3 minutes. The best recent month was Nov 2024 with 86% on-time.
What is the cancellation rate for DCA to TYS? ▼
Over the last 24 months, 3.6% of flights on this route were cancelled (75 of 2,106 flights) and 0.1% were diverted.
How far is the flight from DCA to TYS? ▼
The flight distance from Washington (DCA) to Knoxville (TYS) is approximately 437 miles. This route is served by 8 carriers.
When is the best time to fly from DCA to TYS? ▼
The best recent month for on-time performance was Nov 2024 (86% on-time). The worst was Dec 2025 (51% on-time). Consider booking during months with historically better performance.

Airports on this route

DCA Airport

Washington
TYS Airport

Knoxville
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 DCA–TYS data

DCA–TYS is mid-pack at 76.7% on-time; month and carrier mix move more than the corridor headline.

  • Compare DCA and TYS airport profiles: delay causes and top routes differ even on the same corridor. DCA airport
  • If your dates flex, September (83.3% on-time) beats July (67.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 76.7% 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.