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

Newark, NJ (EWR) to Boston, MA (BOS) flight delay odds

68.5% of 3,906 official scheduled EWR-to-BOS flights arrived on time; 21.1% arrived at least 30 minutes late and 4.0% 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 SIGNALHigher disruption
68.5%arrived on time
21.1%30+ min late
4.0%cancelled
3,906scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late12.6%all scheduled flights
120+ minutes late4.5%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+13.1 mincompleted flights

Which departure time was most reliable for EWR to BOS?

Among qualifying EWR-to-BOS departure window results, Early morning had the highest on-time rate: 86.1% of 807 flights. Night was lowest at 54.3% across 188 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning80786.1%7.4%2.5%
Late morning58382.7%9.4%2.7%
Afternoon1,42561.7%27.0%3.9%
Evening90357.5%29.0%6.1%
Night18854.3%34.0%4.3%

Which weekday was most reliable for EWR to BOS?

Among qualifying EWR-to-BOS weekday results, Saturday had the highest on-time rate: 75.2% of 440 flights. Sunday was lowest at 63.7% across 548 flights.

DayFlightsOn time30+ minCancelled
Monday58766.6%19.4%7.0%
Tuesday59770.0%21.1%3.0%
Wednesday57871.5%17.8%3.3%
Thursday57664.6%25.2%3.8%
Friday58069.5%21.7%1.9%
Saturday44075.2%18.0%1.6%
Sunday54863.7%24.3%6.8%

Which airline was most reliable for EWR to BOS?

Among qualifying EWR-to-BOS airline results, Republic Airways had the highest on-time rate: 68.8% of 1,187 flights. United Airlines was lowest at 68.4% across 2,719 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,71968.4%21.8%3.1%
Republic Airways1,18768.8%19.7%6.0%

Which month was most reliable for EWR to BOS?

Among qualifying EWR-to-BOS month results, May 2026 had the highest on-time rate: 82.5% of 348 flights. October 2025 was lowest at 48.8% across 332 flights.

MonthFlightsOn time30+ minCancelled
July 202533153.2%31.7%10.3%
August 202533069.7%24.8%0.9%
September 202533652.4%37.2%3.0%
October 202533248.8%34.9%3.0%
November 202532765.4%18.3%10.1%
December 202527775.8%17.7%1.4%
January 202629675.3%12.5%6.8%
February 202630273.8%13.2%8.3%
March 202635371.4%17.6%2.3%
April 202634781.0%15.0%0.0%
May 202634882.5%10.6%0.6%
June 202632774.3%18.7%1.8%

What drove EWR to BOS delay minutes?

Late aircraft was the largest recorded EWR-to-BOS delay category, accounting for 37.7% of 81,041 BTS-attributed delay minutes during July 2025–June 2026.

Airline19.1%
Late aircraft37.7%
National airspace37.5%
Weather5.6%
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.