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

San Francisco, CA (SFO) to Washington, DC (IAD) flight delay odds

81.8% of 2,788 official scheduled SFO-to-IAD flights arrived on time; 11.3% arrived at least 30 minutes late and 0.8% 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 SIGNALLower disruption
81.8%arrived on time
11.3%30+ min late
0.8%cancelled
2,788scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.9%all scheduled flights
120+ minutes late2.3%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+0.9 mincompleted flights

Which departure time was most reliable for SFO to IAD?

Among qualifying SFO-to-IAD departure window results, Early morning had the highest on-time rate: 85.1% of 502 flights. Late morning was lowest at 75.4% across 415 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning50285.1%8.8%1.6%
Late morning41575.4%15.9%0.2%
Afternoon73779.5%13.3%0.7%
Night1,11884.1%9.6%0.6%

Which weekday was most reliable for SFO to IAD?

Among qualifying SFO-to-IAD weekday results, Tuesday had the highest on-time rate: 84.0% of 382 flights. Sunday was lowest at 79.7% across 408 flights.

DayFlightsOn time30+ minCancelled
Monday40182.5%9.7%0.5%
Tuesday38284.0%8.4%0.0%
Wednesday39380.2%13.5%0.3%
Thursday40682.3%11.8%0.7%
Friday40983.4%10.3%0.2%
Saturday38980.7%12.3%0.8%
Sunday40879.7%13.0%2.7%

Which airline was most reliable for SFO to IAD?

Among qualifying SFO-to-IAD airline results, United Airlines had the highest on-time rate: 83.1% of 2,690 flights. Alaska Airlines was lowest at 45.9% across 98 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,69083.1%10.3%0.7%
Alaska Airlines9845.9%37.8%1.0%

Which month was most reliable for SFO to IAD?

Among qualifying SFO-to-IAD month results, February 2026 had the highest on-time rate: 92.1% of 189 flights. July 2025 was lowest at 64.4% across 267 flights.

MonthFlightsOn time30+ minCancelled
July 202526764.4%25.8%0.7%
August 202525478.7%12.2%1.2%
September 202520681.1%7.8%0.0%
October 202524788.7%6.9%0.4%
November 202522985.6%10.0%0.4%
December 202524586.5%8.2%0.0%
January 202620985.6%8.1%3.8%
February 202618992.1%6.3%0.0%
March 202620984.2%8.6%2.4%
April 202623183.5%10.4%0.4%
May 202626883.2%9.0%0.0%
June 202623472.6%18.8%0.0%

What drove SFO to IAD delay minutes?

Airline was the largest recorded SFO-to-IAD delay category, accounting for 40.9% of 30,913 BTS-attributed delay minutes during July 2025–June 2026.

Airline40.9%
Late aircraft40.0%
National airspace18.4%
Weather0.6%
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.