Oakland (OAK) to Ontario (ONT) flights

Southwest Airlines flies nonstop from Oakland San Francisco Bay Airport to Ontario International Airport, with about 26 flights a week in July 2026. The 362-mile flight takes about 1h 14m gate to gate.

From
OAK
Oakland
Oakland San Francisco Bay Airport
To
ONT
Ontario
Ontario International Airport
Distance
362 mi · 583 km
Flight time
1h 14m
Airlines
1
Seats filled
59%
Flights a week, July 2026
1,474 flights and 135,504 passengers in 12 months
ONTONTOAK
Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying OAK to ONT

AirlineFlights a weekAircraftPassengers (12 months)Flight time
Southwest Airlines26Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800135,5041h 14m

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

OAK to ONT flight schedule

11 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 6:00am and the last at 9:45pm. Times are local and can change; check with the airline before you book.

FlightDepartsArrivesDays flown in August 2026On time (12 months)
WN 1774Southwest Airlines6:00am7:25am12100%
WN 2734Southwest Airlines6:30am7:55am12100%
WN 3076Southwest Airlines10:30am11:50am12100%
WN 1911Southwest Airlines11:50am1:10pm4n/a
WN 554Southwest Airlines12:15pm1:35pm8n/a
WN 3430Southwest Airlines3:45pm5:05pm1275%
WN 1984Southwest Airlines5:10pm6:30pm8n/a
WN 106Southwest Airlines6:25pm7:45pm4n/a
WN 2835Southwest Airlines7:55pm9:15pm2848%
WN 192Southwest Airlines8:30pm9:55pm8n/a
WN 1781Southwest Airlines9:45pm11:05pm4n/a

Is OAK to ONT on time?

From September 2025 to August 2026, 80% of 1,458 flights arrived within 15 minutes of schedule and 0.5% were cancelled. Flights leaving around 6am were the most punctual (97%), those around 7pm the least (53%). Most delay time was caused by late-arriving aircraft (61%).

AirlineFlightsOn timeAverage delayCancelled
Southwest Airlines1,45880%11 min0.5%

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
6am to 7am262
97%
7am to 8am56
98%
9am to 10am63
92%
10am to 11am146
91%
11am to 12pm66
85%
12pm to 1pm95
80%
1pm to 2pm71
82%
2pm to 3pm45
87%
3pm to 4pm102
70%
4pm to 5pm66
73%
5pm to 6pm93
67%
6pm to 7pm99
84%
7pm to 8pm79
53%
8pm to 9pm139
54%
9pm to 10pm30
67%

Flights by month

MonthFlightsFlights, relativePassengers
August 2025137
13,337
September 2025134
13,257
October 2025136
13,306
November 2025125
12,829
December 2025125
12,735
January 2026120
9,315
February 2026115
9,636
March 2026120
10,987
April 2026116
10,347
May 2026117
10,583
June 2026112
10,069
July 2026117
9,103

Related

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