Oakland to Ontario (OAK-ONT): nonstop flights and who flies them

Frontier Airlines flies the OAK to ONT nonstop about 5 times a week. Frontier Airlines sets the rhythm here, a few flights a day with a small premium cabin on each, so a date with open space is worth acting on the day you see it. Frontier Airlines fly the route nonstop in 2LNR's schedule data; the timetable and the reverse direction are below.

Schedule last confirmed September 6, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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Nonstop flights a week

362 mi

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Oakland to Ontario flight schedule

Scheduled nonstop departures for OAK to ONT, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Scheduled nonstop departures from Oakland (OAK) to Ontario (ONT)
Date	Flight	Airline	Departs OAK	Arrives ONT	Duration	Aircraft
Sat, Nov 21	F9 4222	Frontier Airlines	19:13	20:33	1h 20m	32Q
Sun, Nov 22	F9 4222	Frontier Airlines	19:13	20:33	1h 20m	32Q
Tue, Nov 24	F9 4222	Frontier Airlines	19:13	20:33	1h 20m	320
Thu, Nov 26	F9 4222	Frontier Airlines	19:13	20:33	1h 20m	321
Sat, Nov 28	F9 4222	Frontier Airlines	19:13	20:33	1h 20m	32Q
Sun, Nov 29	F9 4222	Frontier Airlines	19:13	20:33	1h 20m	32Q

Showing all 6 scheduled OAK to ONT departures across the next 6 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every OAK to ONT date on the interactive map

The full OAK to ONT nonstop schedule

Frontier Airlines fly the route nonstop in 2LNR's schedule data. This page carries the full OAK to ONT nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See real availability

Confirmed upgrade and award seats on each OAK to ONT departure, checked against live inventory so you know what is open before you book.

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Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See OAK to ONT on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Oakland to Ontario nonstop

Carriers operating OAK to ONT nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

Frontier Airlines (F9) route map

See OAK to ONT on the interactive map →

Frequently asked questions about OAK to ONT

How far is Ontario from Oakland?

OAK to ONT covers about 362 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.

Which airlines fly nonstop from OAK to ONT?

Frontier Airlines is currently the only airline flying OAK to ONT nonstop. None of them is a carrier 2LNR reads inventory for, so this page carries the OAK to ONT schedule rather than a space claim.

How many flights a week are there from OAK to ONT?

About 5 nonstop flights a week run between Oakland and Ontario in the current schedule, operated by Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.

What time do flights from OAK to ONT depart?

In the next 6 days with service, every scheduled OAK to ONT nonstop leaves at 19:13 local time at Oakland. The schedule table on this page lists each departure by date.

Does 2LNR show upgrade or award space on OAK to ONT?

Not on this route: none of Frontier Airlines is a carrier 2LNR reads inventory for. The page carries the full OAK to ONT nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full OAK to ONT nonstop schedule

Every scheduled departure on this route, with who flies it. On the routes 2LNR does read inventory for, upgrade and award space shows by date, the next 14 days free on every product and the full horizon on Pro.

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