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

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

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

As of September 2026, there are 1 flights per day flying from Ontario to Oakland, California. The most common time of day flights depart is 6:00, with 56% of flights taking off at midday.

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

Southwest is the most popular carrier operating from Ontario to Oakland

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

Prices for flights from Ontario Airport to Oakland Airport refresh daily.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Oakland Airport.

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

The required travel and health documents for your Oakland 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 Oakland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

R2 108 Cheap Flights from Ontario to Oakland, California in 2026/27

Find the cheapest flights from Ontario to San Francisco

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

15:00 - 16:15ONT Ontario-OAK Oakland

1h 15mdirect

10:40 - 12:00OAK Oakland-ONT Ontario

1h 20mdirect

R4 200Southwest

Thu, Oct 15 - Thu, Oct 22

6:35 - 7:55ONT Ontario-OAK Oakland

1h 20mdirect

17:40 - 20:50OAK Oakland-ONT Ontario

3h 10m1 stop Las Vegas Harry Reid Intl

R4 298Southwest

Tue, Jan 5 - Thu, Jan 7

6:10 - 7:30ONT Ontario-OAK Oakland

1h 20mdirect

15:20 - 16:40OAK Oakland-ONT Ontario

1h 20mdirect

R4 347Southwest

Fri, Oct 16 - Mon, Oct 19

16:15 - 22:40ONT Ontario-OAK Oakland

6h 25m1 stop Phoenix Sky Harbor Intl

15:20 - 16:40OAK Oakland-ONT Ontario

1h 20mdirect

R4 363Southwest

Thu, Oct 15 - Thu, Oct 22

6:05 - 7:25ONT Ontario-OAK Oakland

1h 20mdirect

8:40 - 15:55OAK Oakland-ONT Ontario

7h 15m2 stops San Diego Sacramento Intl

R4 445Southwest

Sat, Oct 24 - Sat, Oct 31

18:55 - 0:40ONT Ontario-OAK Oakland

5h 45m1 stop Phoenix Sky Harbor Intl

6:20 - 7:40OAK Oakland-ONT Ontario

1h 20mdirect

R4 510Southwest

Fri, Oct 16 - Mon, Oct 19

18:40 - 19:55ONT Ontario-OAK Oakland

1h 15mdirect

17:15 - 18:35OAK Oakland-ONT Ontario

1h 20mdirect

R4 526Southwest

Tue, Oct 20 - Tue, Oct 27

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

5h 50m2 stops Phoenix Sky Harbor Intl San Diego

17:40 - 20:50OAK Oakland-ONT Ontario

3h 10m1 stop Las Vegas Harry Reid Intl

R4 543Southwest

Tue, Jan 5 - Thu, Jan 7

5:30 - 11:00ONT Ontario-OAK Oakland

5h 30m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

17:00 - 18:25OAK Oakland-ONT Ontario

1h 25mdirect

R4 592Southwest

Sat, Oct 17 - Sat, Oct 17

5:30 - 9:50ONT Ontario-OAK Oakland

4h 20m1 stop Phoenix Sky Harbor Intl

8:40 - 15:55OAK Oakland-ONT Ontario

7h 15m2 stops San Diego Sacramento Intl

R4 608Southwest

Sat, Oct 24 - Sat, Oct 31

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Southwest flights from Ontario to Oakland, California

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

Southwest

Oct 15

ONT15:00Ontario

1h 15m

OAK16:15Oakland

Oct 22

OAK10:40Oakland

1h 20m

ONT12:00Ontario

R4 200

Southwest

Jan 5

ONT6:35Ontario

1h 20m

OAK7:55Oakland

Jan 7

OAK17:40Oakland

3h 10m

1 stop

ONT20:50Ontario

R4 298

Southwest

Oct 16

ONT6:10Ontario

1h 20m

OAK7:30Oakland

Oct 19

OAK15:20Oakland

1h 20m

ONT16:40Ontario

R4 347

Alaska Airlines flights from Ontario to Oakland, California

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

Alaska Airlines

Oct 28

ONT7:25Ontario

8h 59m

1 stop

OAK16:24Oakland

Oct 31

OAK7:02Oakland

6h 14m

1 stop

ONT13:16Ontario

R6 177

Alaska Airlines

Oct 9

ONT17:45Ontario

17h 45m

2 stops

OAK11:30Oakland

Oct 13

OAK15:14Oakland

25h 51m

2 stops

ONT17:05Ontario

R9 788

Alaska Airlines

Oct 9

ONT18:56Ontario

16h 29m

1 stop

OAK11:25Oakland

Oct 12

OAK17:05Oakland

24h 00m

2 stops

ONT17:05Ontario

R11 749

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Thu 15/10

15:00-16:15

Nonstop1h 15m

Oakland

Thu 22/10

10:40-12:00

Nonstop1h 20m

R4 200

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Tue 5/1

6:35-7:55

Nonstop1h 20m

Oakland

Thu 7/1

17:40-20:50

1 stop3h 10m

R4 298

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Fri 16/10

6:10-7:30

Nonstop1h 20m

Oakland

Mon 19/10

15:20-16:40

Nonstop1h 20m

R4 347

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Thu 15/10

16:15-22:40

1 stop6h 25m

Oakland

Thu 22/10

15:20-16:40

Nonstop1h 20m

R4 363

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Sat 24/10

6:05-7:25

Nonstop1h 20m

Oakland

Sat 31/10

8:40-15:55

2 stops7h 15m

R4 445

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Fri 16/10

18:55-0:40

1 stop5h 45m

Oakland

Mon 19/10

6:20-7:40

Nonstop1h 20m

R4 510

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Tue 20/10

18:40-19:55

Nonstop1h 15m

Oakland

Tue 27/10

17:15-18:35

Nonstop1h 20m

R4 526

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Tue 5/1

12:50-18:40

2 stops5h 50m

Oakland

Thu 7/1

17:40-20:50

1 stop3h 10m

R4 543

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Sat 17/10

5:30-11:00

2 stops5h 30m

Oakland

Sat 17/10

17:00-18:25

Nonstop1h 25m

R4 592

OntarioOakland

ONT Ontario - OAK Oakland

ONTOAK

Ontario

Sat 24/10

5:30-9:50

1 stop4h 20m

Oakland

Sat 31/10

8:40-15:55

2 stops7h 15m

R4 608

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 Ontario to Oakland, California

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 Ontario and Oakland, California?

Prices are currently typical for flights on this route.

Typical prices usually range from R3 873 to R5 425.
The lowest price recently found on this route was R4 200.

What is the cheapest month to fly to Oakland, California?

The cheapest month to fly to Oakland, California from Ontario is in September. Flight prices, which tend to average around R4 053, are often lower during this time because this is during the off-season. If you are unable to visit Oakland, California during the month of September, then departing from Ontario during the month December is also very affordable. Most momondo users find prices during this month for around R4 363.

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

You are more likely to see cheaper flights to Oakland, California from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Oakland, California for around R4 910 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oakland, California from Ontario for as low as R3 677 on momondo.

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

As of September 2026, prices for Ontario to Oakland, California flights are approximately 185% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Oakland, California

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

Estimated return price

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

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

Best price found	R2 108
Direct flights	Every day
Airports in Oakland, California	1 airport

The best one-way flight to Oakland, California from Ontario in the past 72 hours is R2 108. The best return flight deal from Ontario to Oakland, California found on momondo in the last 72 hours is R4 200.

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

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

Search flight deals

Frequently asked questions about flying from Ontario to Oakland, California

How far is Ontario to Oakland by plane?
Ontario and Oakland are 587,7 km apart from one another.
When did momondo last update prices for flights from Ontario Airport to Oakland Airport?
Prices for flights from Ontario Airport to Oakland Airport refresh daily.
How old do you have to be to fly from Ontario Airport to Oakland Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Oakland Airport.
What documentation or ID do you need to fly to Oakland Airport?
The required travel and health documents for your Oakland 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 Oakland 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 Ontario to Oakland, California?
momondo data reveals that the most frequently booked plane model on the route from Ontario to Oakland, California is Boeing 737 MAX 8, representing 20,38% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 18,01%, Airbus A321neo at 7,11%, and Boeing 737-800 at 6,16%.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Oakland . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Ontario to Oakland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Oakland.

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

Yes. momondo can track prices for Ontario to Oakland 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.