BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DCATYS

Washington, DC (DCA) to Knoxville, TN (TYS) flight delay odds

Historically, 65.7% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,023 flights.

HISTORICAL ROUTE SIGNALVariable
65.7%arrived on time
23.1%30+ min late
3.8%cancelled
1,023scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late16.1%all scheduled flights
120+ minutes late7.3%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+23.4 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning18385.2%7.1%2.7%
Late morning16379.8%14.1%1.8%
Afternoon36458.2%28.6%3.3%
Evening31355.6%30.7%6.1%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday15063.3%23.3%4.7%
Tuesday15567.7%21.9%3.9%
Wednesday15265.1%24.3%2.6%
Thursday14859.5%26.4%3.4%
Friday14965.1%22.8%4.0%
Saturday11975.6%16.8%3.4%
Sunday15065.3%24.7%4.7%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
PSA Airlines98265.0%23.5%3.9%
Republic Airways3982.1%12.8%2.6%
Envoy Air2100.0%0.0%0.0%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 20259252.2%34.8%7.6%
August 20258970.8%14.6%7.9%
September 20258680.2%9.3%0.0%
October 20258968.5%23.6%0.0%
November 20258466.7%23.8%2.4%
December 20256347.6%38.1%3.2%
January 20267962.0%16.5%12.7%
February 20268071.2%18.8%2.5%
March 20268956.2%34.8%4.5%
April 20268974.2%22.5%0.0%
May 20269367.7%20.4%0.0%
June 20269066.7%22.2%5.6%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline21.0%
Late aircraft59.3%
National airspace12.2%
Weather7.1%
Security0.4%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.