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

Chattanooga, TN (CHA) to Atlanta, GA (ATL) flight delay odds

Historically, 85.6% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,336 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
85.6%arrived on time
8.8%30+ min late
2.2%cancelled
1,336scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.2%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival-1.5 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 morning52990.9%5.1%2.1%
Late morning17788.7%5.1%4.0%
Afternoon35279.0%14.2%1.1%
Evening27881.7%11.5%2.5%

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
Monday19784.8%10.7%1.0%
Tuesday19885.4%9.6%0.5%
Wednesday18793.6%3.2%0.0%
Thursday19489.2%8.2%1.0%
Friday19785.3%10.2%2.0%
Saturday16882.1%6.0%7.1%
Sunday19578.5%13.3%4.1%

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
Delta Air Lines1,31585.9%8.7%2.1%
SkyWest Airlines2166.7%19.0%4.8%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202515983.0%11.9%1.9%
August 202511381.4%13.3%1.8%
September 202513791.2%4.4%0.0%
October 202514390.2%5.6%0.0%
November 202511786.3%8.5%0.9%
December 20257784.4%9.1%1.3%
January 20268380.7%4.8%10.8%
February 20266193.4%3.3%3.3%
March 20268180.2%12.3%6.2%
April 20269885.7%9.2%1.0%
May 202612085.0%10.0%2.5%
June 202614784.4%10.9%1.4%

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.

Airline46.4%
Late aircraft36.9%
National airspace9.8%
Weather6.8%
Security0.0%
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.