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

Los Angeles, CA (LAX) to Boston, MA (BOS) flight delay odds

77.2% of 4,718 official scheduled LAX-to-BOS flights arrived on time; 14.4% arrived at least 30 minutes late and 1.4% 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
77.2%arrived on time
14.4%30+ min late
1.4%cancelled
4,718scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.4%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+7.3 mincompleted flights

Which departure time was most reliable for LAX to BOS?

Among qualifying LAX-to-BOS departure window results, Early morning had the highest on-time rate: 82.3% of 1,501 flights. Late morning was lowest at 65.6% across 735 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,50182.3%11.0%1.3%
Late morning73565.6%23.3%1.2%
Afternoon1,06671.7%18.5%1.4%
Evening13581.5%11.9%0.7%
Night1,28182.2%10.2%1.7%

Which weekday was most reliable for LAX to BOS?

Among qualifying LAX-to-BOS weekday results, Saturday had the highest on-time rate: 81.2% of 581 flights. Sunday was lowest at 70.8% across 701 flights.

DayFlightsOn time30+ minCancelled
Monday70077.3%14.9%2.4%
Tuesday67980.6%12.1%1.0%
Wednesday66876.0%15.1%0.4%
Thursday69175.1%17.1%0.4%
Friday69880.4%13.0%0.9%
Saturday58181.2%11.5%0.5%
Sunday70170.8%16.7%4.0%

Which airline was most reliable for LAX to BOS?

Among qualifying LAX-to-BOS airline results, United Airlines had the highest on-time rate: 85.9% of 716 flights. JetBlue Airways was lowest at 74.7% across 1,626 flights.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways1,62674.7%16.5%1.4%
Delta Air Lines1,23077.2%14.2%1.7%
American Airlines1,14675.5%15.0%1.3%
United Airlines71685.9%8.9%1.1%

Which month was most reliable for LAX to BOS?

Among qualifying LAX-to-BOS month results, August 2025 had the highest on-time rate: 87.3% of 433 flights. January 2026 was lowest at 70.8% across 373 flights.

MonthFlightsOn time30+ minCancelled
July 202544079.1%16.8%0.2%
August 202543387.3%7.4%0.2%
September 202536373.0%18.5%0.0%
October 202540371.5%19.1%0.7%
November 202537678.7%13.0%1.3%
December 202538075.0%16.8%1.3%
January 202637370.8%15.0%5.6%
February 202634472.7%13.1%6.7%
March 202638976.3%12.3%0.5%
April 202636476.4%15.4%0.3%
May 202640082.8%12.0%0.0%
June 202645380.4%14.1%1.1%

What drove LAX to BOS delay minutes?

Late aircraft was the largest recorded LAX-to-BOS delay category, accounting for 34.7% of 80,970 BTS-attributed delay minutes during July 2025–June 2026.

Airline34.1%
Late aircraft34.7%
National airspace28.0%
Weather3.2%
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.