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

Boston, MA (BOS) to Atlanta, GA (ATL) flight delay odds

76.8% of 4,931 official scheduled BOS-to-ATL flights arrived on time; 14.3% arrived at least 30 minutes late and 2.0% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
76.8%arrived on time
14.3%30+ min late
2.0%cancelled
4,931scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.8%all scheduled flights
120+ minutes late3.0%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+5.5 mincompleted flights

Which departure time was most reliable for BOS to ATL?

Among qualifying BOS-to-ATL departure window results, Early morning had the highest on-time rate: 82.5% of 1,409 flights. Night was lowest at 51.5% across 66 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,40982.5%10.2%2.1%
Late morning94181.6%9.1%2.2%
Afternoon1,42775.8%15.1%1.5%
Evening1,08868.0%21.1%2.3%
Night6651.5%40.9%1.5%

Which weekday was most reliable for BOS to ATL?

Among qualifying BOS-to-ATL weekday results, Wednesday had the highest on-time rate: 85.4% of 678 flights. Sunday was lowest at 69.1% across 732 flights.

DayFlightsOn time30+ minCancelled
Monday74573.2%16.0%4.2%
Tuesday70476.1%14.2%2.0%
Wednesday67885.4%8.8%0.1%
Thursday72878.2%14.3%0.5%
Friday74179.5%13.5%1.8%
Saturday60376.6%13.9%2.3%
Sunday73269.1%18.6%2.9%

Which airline was most reliable for BOS to ATL?

Among qualifying BOS-to-ATL airline results, Delta Air Lines had the highest on-time rate: 80.4% of 3,662 flights. Frontier Airlines was lowest at 62.9% across 399 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines3,66280.4%11.8%1.8%
JetBlue Airways85067.8%21.2%2.4%
Frontier Airlines39962.9%21.8%3.3%
Spirit Airlines2070.0%20.0%0.0%

Which month was most reliable for BOS to ATL?

Among qualifying BOS-to-ATL month results, September 2025 had the highest on-time rate: 82.5% of 401 flights. January 2026 was lowest at 66.8% across 343 flights.

MonthFlightsOn time30+ minCancelled
July 202542572.2%17.6%1.4%
August 202540380.6%10.2%1.2%
September 202540182.5%11.0%0.2%
October 202542581.2%14.6%0.7%
November 202541477.1%14.7%1.4%
December 202541767.1%20.4%2.6%
January 202634366.8%18.4%7.3%
February 202632770.0%16.8%6.4%
March 202640378.4%12.4%1.7%
April 202644579.8%12.6%0.7%
May 202646379.7%12.3%0.9%
June 202646581.9%11.6%1.3%

What drove BOS to ATL delay minutes?

Late aircraft was the largest recorded BOS-to-ATL delay category, accounting for 42.6% of 71,670 BTS-attributed delay minutes during July 2025–June 2026.

Airline34.5%
Late aircraft42.6%
National airspace21.9%
Weather1.0%
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.