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

Washington, DC (IAD) to Newark, NJ (EWR) flight delay odds

73.5% of 1,501 official scheduled IAD-to-EWR flights arrived on time; 16.5% arrived at least 30 minutes late and 2.3% 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
73.5%arrived on time
16.5%30+ min late
2.3%cancelled
1,501scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.7%all scheduled flights
120+ minutes late5.7%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+14.6 mincompleted flights

Which departure time was most reliable for IAD to EWR?

Among qualifying IAD-to-EWR departure window results, Early morning had the highest on-time rate: 84.3% of 728 flights. Evening was lowest at 50.1% across 365 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning72884.3%8.4%1.5%
Afternoon4276.2%4.8%0.0%
Evening36550.1%35.1%3.0%
Night36674.9%15.3%3.3%

Which weekday was most reliable for IAD to EWR?

Among qualifying IAD-to-EWR weekday results, Wednesday had the highest on-time rate: 77.0% of 213 flights. Sunday was lowest at 68.8% across 215 flights.

DayFlightsOn time30+ minCancelled
Monday21474.3%16.4%4.2%
Tuesday21873.9%11.5%2.3%
Wednesday21377.0%15.5%1.9%
Thursday21470.1%18.7%2.3%
Friday21275.9%16.5%0.5%
Saturday21574.4%16.7%0.5%
Sunday21568.8%20.0%4.2%

Which airline was most reliable for IAD to EWR?

Only United Airlines met the IAD-to-EWR airline threshold: 73.4% of 1,480 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
United Airlines1,48073.4%16.6%2.2%
Republic Airways2181.0%9.5%4.8%

Which month was most reliable for IAD to EWR?

Among qualifying IAD-to-EWR month results, April 2026 had the highest on-time rate: 89.2% of 120 flights. July 2025 was lowest at 50.0% across 124 flights.

MonthFlightsOn time30+ minCancelled
July 202512450.0%33.9%6.5%
August 202512459.7%26.6%0.8%
September 202512271.3%16.4%0.0%
October 202512472.6%17.7%0.0%
November 202511765.8%23.9%1.7%
December 202512575.2%17.6%0.0%
January 202612477.4%11.3%6.5%
February 202611279.5%9.8%7.1%
March 202612475.0%14.5%1.6%
April 202612089.2%8.3%0.0%
May 202613587.4%5.9%2.2%
June 202615077.3%12.7%1.3%

What drove IAD to EWR delay minutes?

National airspace was the largest recorded IAD-to-EWR delay category, accounting for 41.8% of 32,157 BTS-attributed delay minutes during July 2025–June 2026.

Airline17.5%
Late aircraft28.0%
National airspace41.8%
Weather12.7%
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.