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

Boston, MA (BOS) to New York, NY (LGA) flight delay odds

Historically, 73.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 7,251 flights.

HISTORICAL ROUTE SIGNALHigher disruption
73.2%arrived on time
15.9%30+ min late
5.7%cancelled
7,251scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.6%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+7.8 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 morning1,51287.2%5.4%4.2%
Late morning1,46182.5%9.0%3.8%
Afternoon2,33070.6%19.1%4.8%
Evening1,76658.7%24.9%9.8%
Night18257.7%29.7%4.9%

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
Monday1,19774.1%13.6%8.5%
Tuesday1,21774.2%16.4%5.5%
Wednesday1,18676.2%13.5%4.7%
Thursday1,17168.2%19.8%5.2%
Friday1,17076.2%14.8%3.7%
Saturday36682.5%9.8%1.9%
Sunday94466.0%19.9%8.2%

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
Republic Airways6,70872.2%16.5%5.8%
Delta Air Lines54386.4%7.6%4.2%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202559265.9%17.4%11.8%
August 202556884.7%8.8%1.9%
September 202563475.1%16.6%3.2%
October 202567468.0%23.0%4.5%
November 202559972.6%19.5%4.7%
December 202550671.5%16.8%5.7%
January 202654373.1%12.9%9.6%
February 202655074.5%10.5%9.8%
March 202661658.6%21.6%11.2%
April 202664278.2%15.7%0.5%
May 202666678.7%13.4%2.7%
June 202666177.6%12.9%4.4%

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.

Airline20.4%
Late aircraft36.9%
National airspace37.7%
Weather4.8%
Security0.2%
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.