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

San Francisco, CA (SFO) to Santa Ana, CA (SNA) flight delay odds

Historically, 79.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 4,726 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
79.2%arrived on time
12.4%30+ min late
1.2%cancelled
4,726scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.8%all scheduled flights
120+ minutes late1.9%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+4.7 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning75089.2%6.1%1.2%
Late morning1,10078.0%13.1%0.5%
Afternoon1,83574.8%15.9%1.0%
Evening1,04180.8%10.0%2.2%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday71576.8%13.3%1.3%
Tuesday65083.2%10.3%0.6%
Wednesday64779.8%12.7%1.1%
Thursday69678.2%14.8%1.6%
Friday70675.2%14.2%1.4%
Saturday63186.1%9.0%1.0%
Sunday68175.9%12.0%1.3%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines3,52178.1%13.3%1.4%
United Airlines1,01183.3%8.3%0.5%
Frontier Airlines14573.1%18.6%0.7%
Alaska Airlines4987.8%12.2%0.0%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202539777.1%14.4%0.3%
August 202542485.1%8.0%0.5%
September 202543688.3%6.0%0.0%
October 202544881.7%10.7%0.4%
November 202544578.9%10.8%3.1%
December 202539476.1%16.5%2.3%
January 202637786.2%8.0%1.6%
February 202631984.0%10.3%0.3%
March 202634589.3%5.2%0.6%
April 202636871.2%17.9%1.6%
May 202640064.0%20.5%2.0%
June 202637367.8%21.2%1.3%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline20.4%
Late aircraft42.7%
National airspace31.2%
Weather5.7%
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.