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

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

73.0% of 4,935 official scheduled ATL-to-BOS flights arrived on time; 16.7% arrived at least 30 minutes late and 1.9% 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
73.0%arrived on time
16.7%30+ min late
1.9%cancelled
4,935scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.6%all scheduled flights
120+ minutes late3.1%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+9.1 mincompleted flights

Which departure time was most reliable for ATL to BOS?

Among qualifying ATL-to-BOS departure window results, Early morning had the highest on-time rate: 85.6% of 1,059 flights. Evening was lowest at 62.7% across 915 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,05985.6%7.1%2.4%
Late morning84182.3%9.4%1.8%
Afternoon1,51966.1%22.2%1.3%
Evening91562.7%24.9%2.2%
Night60170.5%17.6%2.7%

Which weekday was most reliable for ATL to BOS?

Among qualifying ATL-to-BOS weekday results, Saturday had the highest on-time rate: 80.1% of 617 flights. Sunday was lowest at 64.8% across 725 flights.

DayFlightsOn time30+ minCancelled
Monday74268.1%19.9%3.9%
Tuesday69773.9%16.9%1.3%
Wednesday68279.0%13.6%0.1%
Thursday73671.7%17.4%1.4%
Friday73674.7%16.2%0.8%
Saturday61780.1%11.3%1.8%
Sunday72564.8%20.6%4.1%

Which airline was most reliable for ATL to BOS?

Among qualifying ATL-to-BOS airline results, Delta Air Lines had the highest on-time rate: 74.8% of 3,666 flights. Frontier Airlines was lowest at 64.8% across 400 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines3,66674.8%15.2%1.7%
JetBlue Airways84869.2%20.5%2.7%
Frontier Airlines40064.8%22.2%2.5%
Spirit Airlines2161.9%28.6%0.0%

Which month was most reliable for ATL to BOS?

Among qualifying ATL-to-BOS month results, August 2025 had the highest on-time rate: 82.1% of 403 flights. July 2025 was lowest at 63.5% across 425 flights.

MonthFlightsOn time30+ minCancelled
July 202542563.5%27.1%1.6%
August 202540382.1%11.7%0.2%
September 202539969.2%21.8%0.3%
October 202542568.5%21.9%0.7%
November 202541877.5%14.4%1.7%
December 202541670.4%17.3%2.6%
January 202634469.8%14.8%7.3%
February 202632771.9%15.0%6.7%
March 202640469.6%17.3%2.2%
April 202644475.9%13.5%0.2%
May 202646378.0%11.0%0.9%
June 202646777.5%15.0%1.1%

What drove ATL to BOS delay minutes?

National airspace was the largest recorded ATL-to-BOS delay category, accounting for 36.0% of 78,325 BTS-attributed delay minutes during July 2025–June 2026.

Airline35.5%
Late aircraft24.9%
National airspace36.0%
Weather3.5%
Security0.1%
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.