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

Newark, NJ (EWR) to San Francisco, CA (SFO) flight delay odds

68.0% of 4,403 official scheduled EWR-to-SFO flights arrived on time; 21.2% 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 SIGNALVariable
68.0%arrived on time
21.2%30+ min late
2.3%cancelled
4,403scheduled 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 late6.5%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+17.9 mincompleted flights

Which departure time was most reliable for EWR to SFO?

Among qualifying EWR-to-SFO departure window results, Early morning had the highest on-time rate: 75.8% of 1,295 flights. Evening was lowest at 57.3% across 1,132 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,29575.8%14.0%2.6%
Late morning67470.0%20.6%1.0%
Afternoon1,30168.4%21.8%2.2%
Evening1,13257.3%29.1%2.9%

Which weekday was most reliable for EWR to SFO?

Among qualifying EWR-to-SFO weekday results, Tuesday had the highest on-time rate: 76.6% of 640 flights. Sunday was lowest at 61.7% across 629 flights.

DayFlightsOn time30+ minCancelled
Monday64363.0%23.6%3.9%
Tuesday64076.6%14.5%2.0%
Wednesday62970.3%18.6%1.7%
Thursday64064.8%25.0%1.7%
Friday64269.9%19.6%2.0%
Saturday58069.8%20.9%0.9%
Sunday62961.7%26.1%3.8%

Which airline was most reliable for EWR to SFO?

Among qualifying EWR-to-SFO airline results, Alaska Airlines had the highest on-time rate: 74.3% of 610 flights. United Airlines was lowest at 67.0% across 3,793 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines3,79367.0%22.0%2.5%
Alaska Airlines61074.3%16.4%1.0%

Which month was most reliable for EWR to SFO?

Among qualifying EWR-to-SFO month results, March 2026 had the highest on-time rate: 79.5% of 376 flights. June 2026 was lowest at 51.1% across 370 flights.

MonthFlightsOn time30+ minCancelled
July 202539762.7%24.9%4.5%
August 202538573.8%14.8%2.9%
September 202535774.8%17.9%1.4%
October 202538964.3%22.6%0.8%
November 202535171.5%21.9%2.0%
December 202536857.1%32.6%1.1%
January 202632767.9%19.6%4.6%
February 202629766.7%17.8%7.1%
March 202637679.5%14.1%1.3%
April 202638276.7%13.4%1.3%
May 202640469.8%20.3%1.2%
June 202637051.1%33.8%0.8%

What drove EWR to SFO delay minutes?

Airline was the largest recorded EWR-to-SFO delay category, accounting for 34.2% of 115,510 BTS-attributed delay minutes during July 2025–June 2026.

Airline34.2%
Late aircraft32.5%
National airspace28.9%
Weather4.3%
Security0.1%
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.