How many flights depart from Oakland, California to Ontario on average per week?

The number of flights available between Oakland, California and Ontario is 8 per week as of November 2026. The most frequent departure day is Tue, with 50% of weekly flights leaving on this day.

How many flights depart from Oakland, California to Ontario on average per day?

As of November 2026, 1 flights take off from Oakland, California and land in Ontario each day. The most common flight departure time for this route is 6:00, with 50% of daily flights taking off at midday.

What is the cheapest airline that flies from Oakland to Ontario?

Southwest is the most popular carrier operating from Oakland to Ontario

When did momondo last update prices for flights from Oakland Airport to Ontario Airport?

Prices for flights from Oakland Airport to Ontario Airport are updated daily.

How old do you have to be to fly from Oakland Airport to Ontario Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Oakland Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

R1 137 Cheap Flights from Oakland, California to Ontario in 2026/27

Find the cheapest flights from Oakland, California to Los Angeles

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

16:30 - 17:50OAK Oakland-ONT Ontario

1h 20mdirect

20:30 - 21:55ONT Ontario-OAK Oakland

1h 25mdirect

R2 258Southwest

Fri, Dec 11 - Fri, Dec 11

11:30 - 12:50OAK Oakland-ONT Ontario

1h 20mdirect

7:00 - 13:45ONT Ontario-OAK Oakland

6h 45m1 stop Denver Intl

R2 422Southwest

Thu, Dec 10 - Sat, Dec 12

12:25 - 18:15OAK Oakland-ONT Ontario

5h 50m2 stops Las Vegas Harry Reid Intl San Jose

15:40 - 17:05ONT Ontario-OAK Oakland

1h 25mdirect

R2 505Southwest

Sat, Dec 5 - Sat, Dec 12

5:00 - 10:50OAK Oakland-ONT Ontario

5h 50m1 stop Phoenix Sky Harbor Intl

13:25 - 21:15ONT Ontario-OAK Oakland

7h 50m1 stop Denver Intl

R2 587Southwest

Fri, Dec 11 - Sat, Dec 12

12:25 - 18:15OAK Oakland-ONT Ontario

5h 50m2 stops Las Vegas Harry Reid Intl San Jose

7:00 - 13:45ONT Ontario-OAK Oakland

6h 45m1 stop Denver Intl

R2 670Southwest

Sat, Dec 5 - Sat, Dec 12

15:05 - 21:05OAK Oakland-ONT Ontario

6h 00m2 stops Las Vegas Harry Reid Intl San Jose

12:50 - 18:40ONT Ontario-OAK Oakland

5h 50m2 stops Phoenix Sky Harbor Intl San Diego

R2 752Southwest

Wed, Dec 2 - Wed, Dec 9

6:00 - 7:25OAK Oakland-ONT Ontario

1h 25mdirect

21:05 - 22:25ONT Ontario-OAK Oakland

1h 20mdirect

R3 197Southwest

Fri, Dec 18 - Mon, Jan 18

6:00 - 7:25OAK Oakland-ONT Ontario

1h 25mdirect

20:10 - 23:20ONT Ontario-OAK Oakland

3h 10m1 stop Las Vegas Harry Reid Intl

R3 296Southwest

Fri, Dec 18 - Mon, Jan 18

10:45 - 12:05OAK Oakland-ONT Ontario

1h 20mdirect

13:20 - 19:15ONT Ontario-OAK Oakland

5h 55m1 stop Denver Intl

R3 362Southwest

Fri, Dec 11 - Fri, Dec 11

6:00 - 7:25OAK Oakland-ONT Ontario

1h 25mdirect

6:25 - 12:35ONT Ontario-OAK Oakland

6h 10m2 stops Sacramento Intl Las Vegas Harry Reid Intl

R3 444Southwest

Tue, Nov 24 - Thu, Nov 26

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Southwest flights from Oakland, California to Ontario

Our best Southwest deals on Oakland, California to Ontario flight tickets

Southwest

Dec 11

OAK16:30Oakland

1h 20m

ONT17:50Ontario

Dec 11

ONT20:30Ontario

1h 25m

OAK21:55Oakland

R2 258

Southwest

Dec 10

OAK11:30Oakland

1h 20m

ONT12:50Ontario

Dec 12

ONT7:00Ontario

6h 45m

1 stop

OAK13:45Oakland

R2 422

Southwest

Dec 5

OAK12:25Oakland

5h 50m

2 stops

ONT18:15Ontario

Dec 12

ONT15:40Ontario

1h 25m

OAK17:05Oakland

R2 505

Alaska Airlines flights from Oakland, California to Ontario

Our best Alaska Airlines deals on Oakland, California to Ontario flight tickets

Alaska Airlines

Dec 5

OAK8:05Oakland

15h 49m

1 stop

ONT23:54Ontario

Dec 8

ONT18:01Ontario

25h 38m

1 stop

OAK19:39Oakland

R5 982

Alaska Airlines

Dec 9

OAK18:52Oakland

5h 02m

1 stop

ONT23:54Ontario

Dec 12

ONT6:00Ontario

13h 12m

1 stop

OAK19:12Oakland

R6 064

Alaska Airlines

Dec 5

OAK7:00Oakland

16h 54m

2 stops

ONT23:54Ontario

Dec 8

ONT18:01Ontario

19h 26m

1 stop

OAK13:27Oakland

R6 147

momondo Fare Finder

Use the filters below to find and compare flights from Oakland, California to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Fri 11/12

16:30-17:50

Nonstop1h 20m

Ontario

Fri 11/12

20:30-21:55

Nonstop1h 25m

R2 258

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Thu 10/12

11:30-12:50

Nonstop1h 20m

Ontario

Sat 12/12

7:00-13:45

1 stop6h 45m

R2 422

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Sat 5/12

12:25-18:15

2 stops5h 50m

Ontario

Sat 12/12

15:40-17:05

Nonstop1h 25m

R2 505

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Fri 11/12

5:00-10:50

1 stop5h 50m

Ontario

Sat 12/12

13:25-21:15

1 stop7h 50m

R2 587

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Sat 5/12

12:25-18:15

2 stops5h 50m

Ontario

Sat 12/12

7:00-13:45

1 stop6h 45m

R2 670

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Wed 2/12

15:05-21:05

2 stops6h 00m

Ontario

Wed 9/12

12:50-18:40

2 stops5h 50m

R2 752

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Fri 18/12

6:00-7:25

Nonstop1h 25m

Ontario

Mon 18/1

21:05-22:25

Nonstop1h 20m

R3 197

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Fri 18/12

6:00-7:25

Nonstop1h 25m

Ontario

Mon 18/1

20:10-23:20

1 stop3h 10m

R3 296

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Fri 11/12

10:45-12:05

Nonstop1h 20m

Ontario

Fri 11/12

13:20-19:15

1 stop5h 55m

R3 362

OaklandOntario

OAK Oakland - ONT Ontario

OAKONT

Oakland

Tue 24/11

6:00-7:25

Nonstop1h 25m

Ontario

Thu 26/11

6:25-12:35

2 stops6h 10m

R3 444

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Oakland, California to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Oakland, California and Ontario?

Prices are currently low for flights on this route.

Typical prices usually range from R2 637 to R6 246.
The lowest price recently found on this route was R2 258.

What is the cheapest month to fly to Ontario?

In general, November is the cheapest month to fly from Oakland, California to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around R4 400. The month of September is another great option to travel to Ontario, with average flight prices from Oakland, California averaging around R4 581.

How far in advance should I book a flight from Oakland, California to Ontario?

You are more likely to see cheaper flights to Ontario from Oakland, California when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around R5 290 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Oakland, California for as low as R3 691 on momondo.

How have Oakland, California to Ontario flight prices changed over time?

As of November 2026, prices for Oakland, California to Ontario flights are approximately 147% more expensive when compared to flights at the same time last year.

When to book flights from Oakland, California to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Oakland, California to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Oakland, California to Ontario (OAK to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oakland, California to Ontario

Best price found	R1 137
Direct flights	Every day
Airports in Ontario	1 airport

The best one-way flight to Ontario from Oakland, California in the past 72 hours is R1 137. The best return flight deal from Oakland, California to Ontario found on momondo in the last 72 hours is R2 258.

Direct flights go from Oakland, California to Ontario every day.

There is 1 airport in Ontario. From Oakland, California there are direct flights to Ontario (ONT).

Search flight deals

Frequently asked questions about flying from Oakland, California to Ontario

How far is Oakland to Ontario by plane?
The straight-line distance from Oakland to Ontario is 587,7 km.
When did momondo last update prices for flights from Oakland Airport to Ontario Airport?
Prices for flights from Oakland Airport to Ontario Airport are updated daily.
How old do you have to be to fly from Oakland Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Oakland Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Oakland, California to Ontario?
Based on momondo bookings for flights between Oakland, California and Ontario, the leading plane model is Boeing 737 MAX 8, making up 20,93% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 13,95%, Airbus A321neo with 8,67%, and Boeing 737-800 with 7,82%.

Why use momondo?

Why should I use momondo to find a flight deal from Oakland to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Oakland to Ontario for you.

Can I find flights from Oakland to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Oakland to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Oakland to Ontario?

momondo helps you find the best flight between Oakland and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Oakland to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Oakland to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.