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

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

Historically, 77.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 4,718 flights.

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

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 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%

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
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%

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
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%

Monthly trend

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

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 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.

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.