BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
AIRLINE × ROUTE REPORT
ONT→OAK

Southwest Airlines Ontario, CA (ONT) to Oakland, CA (OAK) reliability

Among 1,490 scheduled Southwest Airlines flights from ONT to OAK, 85.9% arrived on time, 8.9% arrived at least 30 minutes late, and 0.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: Southwest Airlines (WN) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
85.9%arrived on time
8.9%30+ min late
0.4%cancelled
1,490scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late8.9%
60+ minutes late4.1%
Cancelled0.4%
Average arrival-2.1 mincompleted flights

What did Southwest Airlines ONT to OAK record?

Southwest Airlines completed 99.6% of its scheduled reportable ONT to OAK flights in the observation window. 85.9% of all scheduled flights arrived less than 15 minutes late, while 4.1% arrived at least an hour late.

What were Southwest Airlines ONT to OAK disruption rates?

For Southwest Airlines ONT-to-OAK flights, 8.9% arrived at least 30 minutes late, 0.4% were cancelled, and 0.0% were diverted.

Compare all airlines on this route

What was the Southwest Airlines ONT to OAK scheduled cohort?

The Southwest Airlines ONT-to-OAK cohort contained 1,490 scheduled flights; 1,484 completed, 6 were cancelled, and 0 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.