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

San Antonio, TX (SAT) to Washington, DC (IAD) flight delay odds

92.2% of 641 official scheduled SAT-to-IAD flights arrived on time; 3.1% arrived at least 30 minutes late and 0.6% 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
92.2%arrived on time
3.1%30+ min late
0.6%cancelled
641scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late1.6%all scheduled flights
120+ minutes late1.1%all scheduled flights
Diverted0.9%did not reach as scheduled
Average arrival-5.0 mincompleted flights

Which departure time was most reliable for SAT to IAD?

Among qualifying SAT-to-IAD departure window results, Early morning had the highest on-time rate: 95.0% of 321 flights. Late morning was lowest at 86.3% across 73 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning32195.0%2.8%0.6%
Late morning7386.3%5.5%0.0%
Afternoon24790.3%2.8%0.8%

Which weekday was most reliable for SAT to IAD?

Among qualifying SAT-to-IAD weekday results, Saturday had the highest on-time rate: 95.5% of 67 flights. Monday was lowest at 88.3% across 103 flights.

DayFlightsOn time30+ minCancelled
Monday10388.3%5.8%0.0%
Tuesday8794.3%1.1%0.0%
Wednesday8092.5%2.5%0.0%
Thursday10493.3%2.9%1.9%
Friday10493.3%1.9%0.0%
Saturday6795.5%3.0%0.0%
Sunday9689.6%4.2%2.1%

Which airline was most reliable for SAT to IAD?

Only United Airlines met the SAT-to-IAD airline threshold: 92.2% of 641 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
United Airlines64192.2%3.1%0.6%

Which month was most reliable for SAT to IAD?

Among qualifying SAT-to-IAD month results, August 2025 had the highest on-time rate: 98.0% of 51 flights. July 2025 was lowest at 84.5% across 58 flights.

MonthFlightsOn time30+ minCancelled
July 20255884.5%5.2%0.0%
August 20255198.0%2.0%0.0%
September 20255194.1%5.9%0.0%
October 20255592.7%5.5%1.8%
November 20256095.0%3.3%0.0%
December 20255891.4%1.7%0.0%
January 20264885.4%0.0%4.2%
February 20264693.5%0.0%0.0%
March 20265789.5%5.3%0.0%
April 20265194.1%0.0%2.0%
May 20265096.0%0.0%0.0%
June 20265692.9%7.1%0.0%

What drove SAT to IAD delay minutes?

Airline was the largest recorded SAT-to-IAD delay category, accounting for 48.7% of 3,213 BTS-attributed delay minutes during July 2025–June 2026.

Airline48.7%
Late aircraft35.9%
National airspace12.2%
Weather3.3%
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.