DCA to TYS flight delays
Washington, VA (DCA) Knoxville, TN (TYS) · 437 miles
1,023 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
68.36%
Arrived on time
Within 15 minutes of schedule
3.81%
Cancelled
Share of scheduled flights
100 min
When late, late by
Average across delayed arrivals
32 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Cancellation, not delay, is the risk worth pricing here: 3.81% of scheduled flights never operated. A late flight still gets you there. A cancelled one leaves you rebooking, and on a route with few daily departures that can mean losing a day.
The season swings this route hard. In September it ran 32 points more punctual than in December — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Flights from Washington to Knoxville run late more often than the average route, though not severely.
Only PSA Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over January 2025 – August 2026, PSA Airlines arrived on time most often on DCA to TYS. Flights ran closest to schedule in September and worst in December.
Every airline on DCA to TYS
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| PSA Airlines | 982 | 67.66% | 3.87% | 99 min | F |
| Republic Airways | 39 | 84.21% | 2.56% | 108 min | — |
| Envoy Air | 2 | 100% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
TYS to DCA Knoxville back to Washington 70.63% on time FOther routes from Washington
Common questions
Are flights from Washington to Knoxville usually delayed?
68.36% of flights on the DCA to TYS route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Washington to Knoxville?
Only PSA Airlines appears in the published record on this route, with 982 flights and 67.66% arriving on time.
How often are DCA to TYS flights cancelled?
3.81% of scheduled flights did not operate — about 38 in every thousand. That is high enough that cancellation, not delay, is the risk worth planning around.
What is the best month to fly Washington to Knoxville?
September, when 81.2% of flights arrived on time. The worst was December at 49.2%.
When DCA to TYS flights are late, how late are they?
About 100 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on DCA to TYS during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →