Ontario (ONT) to Oakland (OAK) flights

Southwest Airlines flies nonstop from Ontario International Airport to Oakland San Francisco Bay Airport, with about 26 flights a week in July 2026. The 362-mile flight takes about 1h 12m gate to gate.

From
ONT
Ontario
Ontario International Airport
To
OAK
Oakland
Oakland San Francisco Bay Airport
Distance
362 mi · 583 km
Flight time
1h 12m
Airlines
1
Seats filled
59%
Flights a week, July 2026
1,466 flights and 135,161 passengers in 12 months
OAKOAKONT
Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying ONT to OAK

AirlineFlights a weekAircraftPassengers (12 months)Flight time
Southwest Airlines26Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800135,1611h 12m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

ONT to OAK flight schedule

11 flight numbers flew this route in August 2026. The first usually leaves at 6:00am and the last at 8:00pm. Times are local and can change; check with the airline before you book.

FlightDepartsArrivesDays flown in August 2026On time (12 months)
WN 1447Southwest Airlines6:00am7:15am11100%
WN 1837Southwest Airlines6:00am7:15am4n/a
WN 654Southwest Airlines6:30am7:55am12100%
WN 278Southwest Airlines10:30am11:50am12100%
WN 690Southwest Airlines11:10am12:25pm8n/a
WN 2615Southwest Airlines12:15pm1:30pm4n/a
WN 692Southwest Airlines2:40pm3:55pm8n/a
WN 1548Southwest Airlines2:50pm4:05pm4n/a
WN 3833Southwest Airlines4:00pm5:20pm1663%
WN 3185Southwest Airlines6:10pm7:25pm1275%
WN 3957Southwest Airlines8:00pm9:15pm1255%

Is ONT to OAK on time?

From September 2025 to August 2026, 86% of 1,450 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 6am were the most punctual (97%), those around 6pm the least (71%). Most delay time was caused by late-arriving aircraft (71%).

AirlineFlightsOn timeAverage delayCancelled
Southwest Airlines1,45086%9 min0.6%

Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.

On-time arrivals by departure time

Scheduled departureFlightsOn time, relativeOn time
5am to 6am58
98%
6am to 7am194
97%
7am to 8am65
97%
9am to 10am63
94%
10am to 11am128
95%
11am to 12pm121
94%
12pm to 1pm40
90%
2pm to 3pm54
85%
3pm to 4pm157
79%
4pm to 5pm116
80%
5pm to 6pm102
78%
6pm to 7pm105
71%
7pm to 8pm80
78%
8pm to 9pm91
76%
9pm to 10pm32
72%

Flights by month

MonthFlightsFlights, relativePassengers
August 2025135
13,125
September 2025133
13,858
October 2025136
13,156
November 2025126
12,809
December 2025122
12,490
January 2026118
9,904
February 2026114
9,729
March 2026121
11,455
April 2026116
9,533
May 2026118
10,211
June 2026111
9,907
July 2026116
8,984

Related

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.