Oakland (OAK) to Ontario (ONT) flights: who flies it

Oakland to Ontario flight schedule

Scheduled nonstop departures for OAK to ONT starting October 23, 2026, last checked against our schedule feed on October 18, 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	Airbus A321neo family
Sun, Nov 22	F9 4222	Frontier Airlines	20:35	21:52	1h 17m	Airbus A320neo
Tue, Nov 24	F9 4222	Frontier Airlines	19:13	20:33	1h 20m	Airbus A320
Thu, Nov 26	F9 4222	Frontier Airlines	20:35	21:52	1h 17m	Airbus A320
Sat, Nov 28	F9 4222	Frontier Airlines	20:42	21:59	1h 17m	Airbus A320neo
Sun, Nov 29	F9 4222	Frontier Airlines	20:35	21:52	1h 17m	Airbus A320

Showing all 6 scheduled OAK to ONT departures across 6 days with service, starting October 23, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every OAK to ONT date on the interactive map

Aircraft on the Oakland to Ontario nonstop

Frontier Airlines flies the departures in the schedule table on this page with the Airbus A320, the Airbus A320neo, and the Airbus A321neo family. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full OAK to ONT nonstop schedule

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 the schedule

Who operates each OAK to ONT nonstop and how often it runs, from 2LNR's schedule data.

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.

Frontier Airlines (F9) route map
The aircraft F9 flies

See OAK to ONT on the interactive map →

Frequently asked questions about OAK to ONT

How long is the flight from Oakland (OAK) to Ontario (ONT)?

Scheduled flight times from Oakland (OAK) to Ontario (ONT) run from 1h 17m to 1h 20m across the departures in the schedule table on this page. The nonstop covers about 362 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.

Which airlines fly nonstop from OAK to ONT?

Frontier Airlines is currently the only airline flying OAK to ONT nonstop. 2LNR doesn't show award or upgrade space for it on OAK to ONT, so this page carries the 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 (OAK) and Ontario (ONT) 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?

Scheduled OAK to ONT nonstops in the next 6 days with service leave between 19:13 and 20:42, local time at Oakland. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

Which flights operate OAK to ONT nonstop?

Frontier Airlines flies F9 4222 nonstop from Oakland (OAK) to Ontario (ONT), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft.

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

Not on this route: 2LNR doesn't show award or upgrade space for Frontier Airlines on OAK to ONT. The page carries the full OAK to ONT nonstop schedule and who flies each departure, and the reverse direction is linked below.