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

Newark, NJ (EWR) to Buffalo, NY (BUF) flight delay odds

75.8% of 463 official scheduled EWR-to-BUF flights arrived on time; 15.3% arrived at least 30 minutes late and 3.9% 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 SIGNALVariable
75.8%arrived on time
15.3%30+ min late
3.9%cancelled
463scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.3%all scheduled flights
120+ minutes late4.3%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+5.1 mincompleted flights

Which departure time was most reliable for EWR to BUF?

Among qualifying EWR-to-BUF departure window results, Early morning had the highest on-time rate: 100.0% of 57 flights. Night was lowest at 68.5% across 222 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning57100.0%0.0%0.0%
Late morning7473.0%14.9%1.4%
Afternoon6182.0%8.2%4.9%
Evening4977.6%10.2%8.2%
Night22268.5%22.5%4.5%

Which weekday was most reliable for EWR to BUF?

Among qualifying EWR-to-BUF weekday results, Friday had the highest on-time rate: 82.6% of 69 flights. Monday was lowest at 68.6% across 70 flights.

DayFlightsOn time30+ minCancelled
Monday7068.6%17.1%4.3%
Tuesday7080.0%15.7%2.9%
Wednesday6674.2%13.6%6.1%
Thursday7275.0%19.4%2.8%
Friday6982.6%5.8%2.9%
Saturday4582.2%13.3%2.2%
Sunday7170.4%21.1%5.6%

Which airline was most reliable for EWR to BUF?

Among qualifying EWR-to-BUF airline results, Republic Airways had the highest on-time rate: 82.0% of 345 flights. United Airlines was lowest at 57.6% across 118 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways34582.0%9.3%3.8%
United Airlines11857.6%33.1%4.2%

Which month was most reliable for EWR to BUF?

Among qualifying EWR-to-BUF month results, April 2026 had the highest on-time rate: 90.9% of 33 flights. July 2025 was lowest at 55.6% across 54 flights.

MonthFlightsOn time30+ minCancelled
July 20255455.6%25.9%9.3%
August 20252070.0%20.0%0.0%
October 20253756.8%29.7%0.0%
November 20255969.5%27.1%1.7%
December 20255570.9%14.5%9.1%
March 20262878.6%10.7%3.6%
April 20263390.9%6.1%0.0%
May 20268790.8%3.4%2.3%
June 20267483.8%10.8%4.1%

What drove EWR to BUF delay minutes?

Late aircraft was the largest recorded EWR-to-BUF delay category, accounting for 60.4% of 7,315 BTS-attributed delay minutes during July 2025–June 2026.

Airline20.7%
Late aircraft60.4%
National airspace14.3%
Weather4.6%
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.