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Cheap flights from Oakland, California to Ontario from $49

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oakland, California to Ontario departing on 5/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Oakland, California to Los Angeles

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Oakland, California to Los Angeles.
Southwest Logo
1:10 pm - 2:30 pmOAK-ONT
1h 20mnonstop
Southwest Logo
6:10 am - 7:30 amONT-OAK
1h 20mnonstop
$77Southwest
Find Deal
Thu, May 22 - Mon, May 26
Southwest Logo
1:10 pm - 2:30 pmOAK-ONT
1h 20mnonstop
Southwest Logo
4:55 pm - 11:45 pmONT-OAK
6h 50m1 stop
$87Southwest
Find Deal
Mon, Jun 2 - Mon, Jun 2
Southwest Logo
6:55 pm - 8:20 pmOAK-ONT
1h 25mnonstop
Southwest Logo
7:50 pm - 9:10 pmONT-OAK
1h 20mnonstop
$114Southwest
Find Deal
Sat, May 31 - Tue, Jun 3
Southwest Logo
6:55 pm - 8:20 pmOAK-ONT
1h 25mnonstop
Southwest Logo
3:10 pm - 8:55 pmONT-OAK
5h 45m1 stop
$124Southwest
Find Deal
Sat, May 31 - Tue, Jun 3
Alaska Airlines Logo
7:00 am - 3:50 pmOAK-ONT
8h 50m1 stop
Alaska Airlines Logo
7:30 am - 7:14 pmONT-OAK
11h 44m1 stop
$272Alaska Airlines
Find Deal
Sat, May 17 - Tue, May 20
Alaska Airlines Logo
7:00 am - 3:50 pmOAK-ONT
8h 50m1 stop
Alaska Airlines Logo
7:20 pm - 6:11 pmONT-OAK
22h 51m1 stop
$282Alaska Airlines
Find Deal
Tue, Jun 3 - Tue, Jun 3
Alaska Airlines Logo
6:52 pm - 11:57 pmOAK-ONT
5h 05m1 stop
Alaska Airlines Logo
10:00 am - 7:14 pmONT-OAK
9h 14m1 stop
$283Alaska Airlines
Find Deal
Tue, May 20 - Tue, May 27
Delta Logo
6:00 am - 4:17 pmOAK-ONT
10h 17m1 stop
Delta Logo
1:10 pm - 10:30 pmONT-OAK
9h 20m1 stop
$404Delta
Find Deal
Sat, May 24 - Sun, May 25
Delta Logo
6:00 am - 4:17 pmOAK-ONT
10h 17m1 stop
Delta Logo
1:10 pm - 10:30 pmONT-OAK
9h 20m1 stop
$409Delta
Find Deal
Sat, May 24 - Sun, May 25
Delta Logo
12:39 pm - 11:42 pmOAK-ONT
11h 03m1 stop
Delta Logo
1:10 pm - 10:30 pmONT-OAK
9h 20m1 stop
$467Delta
Find Deal
Thu, May 22 - Sun, May 25

Southwest flights from Oakland, California to Ontario

Our best Southwest deals on Oakland, California to Ontario flight tickets
Southwest
May 22
OAK1:10 pmOakland
1h 20m
ONT2:30 pmOntario
May 26
ONT6:10 amOntario
1h 20m
OAK7:30 amOakland
Southwest
Jun 2
OAK1:10 pmOakland
1h 20m
ONT2:30 pmOntario
Jun 2
ONT4:55 pmOntario
6h 50m
1 stop
OAK11:45 pmOakland
Southwest
May 31
OAK6:55 pmOakland
1h 25m
ONT8:20 pmOntario
Jun 3
ONT7:50 pmOntario
1h 20m
OAK9:10 pmOakland

Alaska Airlines flights from Oakland, California to Ontario

Our best Alaska Airlines deals on Oakland, California to Ontario flight tickets
Alaska Airlines
May 17
OAK7:00 amOakland
8h 50m
1 stop
ONT3:50 pmOntario
May 20
ONT7:30 amOntario
11h 44m
1 stop
OAK7:14 pmOakland
Alaska Airlines
Jun 3
OAK7:00 amOakland
8h 50m
1 stop
ONT3:50 pmOntario
Jun 3
ONT7:20 pmOntario
22h 51m
1 stop
OAK6:11 pmOakland
Alaska Airlines
May 20
OAK6:52 pmOakland
5h 05m
1 stop
ONT11:57 pmOntario
May 27
ONT10:00 amOntario
9h 14m
1 stop
OAK7:14 pmOakland

See travel insights to Los Angeles from

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

What is the cheapest month to fly to Ontario?

In general, July 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 $85. If you aren’t able to travel during the month of July, then book flights to Ontario from Oakland, California during June instead. Flights to Ontario in June, while not as cheap as those in July, still average around $106.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Monday when prices can be found for as low as $104. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Oakland, California to Ontario for around $126.

What is the cheapest time of day to depart on your flight to Ontario?

At noon is the cheapest time of day to fly from Oakland, California to Ontario when you can find flight prices for as low as $101. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $154 on average. Flights to Ontario from Oakland, California in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Oakland to Ontario flight route?

Fly from Oakland to Ontario for the best Oakland - Ontario flight prices

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Oakland, California when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $213 when searching 25 weeks out.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 $143 on momondo.

What cabin class options are available on Oakland to Ontario flights?

There are 1 cabin classes available to choose from on Oakland to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of April 2025, prices for Oakland, California to Ontario flights are approximately 11% cheaper 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 round-trip 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

$49

Fastest flight time

1h 20m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Ontario

1 airport
The best one-way flight to Ontario from Oakland, California in the past 72 hours is $49. The best round-trip flight deal from Oakland, California to Ontario found on momondo in the last 72 hours is $77.
The fastest flight from Oakland, California to Ontario takes 1h 20m
Direct flights go from Oakland, California to Ontario on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near Ontario: Ontario (ONT)

  • How far is Oakland to Ontario by plane?

    The distance between Oakland and Ontario is about 365.2 mi. By plane, this route typically takes 1h 20m.

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

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

  • How many operators does momondo search for flights from Oakland Airport to Ontario Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. 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 travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Oakland, California to Ontario?

  • What is the most popular airline from Oakland, California to Ontario?


Best airlines flying from Oakland, California to Ontario

Compare and see reviews for airlines that fly from Oakland, California to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $29Free CancellationRating
5.9
3,283 reviews
Search Frontier flights
DeltaPriceFrom $45Free CancellationRating
8.0
7,920 reviews
Search Delta flights
Spirit AirlinesPriceFrom $46Free CancellationRating
6.3
7,940 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $107Free CancellationRating
8.0
9,911 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $198Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
  • Southwest Flights From Oakland, California to Ontario

    The lowest priced Southwest flight from Oakland, California to Ontario from the last 72 hours was $198. Generally, Southwest has 24 flights on this route every week with an average price of $276. Southwest is rated 8.0/10 by our users.


Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Oakland to Ontario. momondo saves you time and could save you money on your trip.

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

Flights from Oakland to Ontario 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 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?

If you are not ready to book a flight from Oakland to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.


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