OAK - ONT

$39 Find Cheap Flights from Oakland to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Oakland to Ontario departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oakland to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oakland to Ontario, as well as popular online travel agencies
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Cheap Flights from Oakland to Ontario (OAK-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Oakland to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Oakland to Ontario

Wed, Jun 18 - Wed, Jun 18
Southwest Logo
6:00 am - 7:25 amOAK-ONT
1h 25mnonstop
Southwest Logo
6:05 pm - 7:25 pmONT-OAK
1h 20mnonstop
$77Southwest
Find Deal
Fri, Jun 13 - Tue, Jun 17
Southwest Logo
6:00 am - 7:25 amOAK-ONT
1h 25mnonstop
Southwest Logo
10:55 am - 12:10 pmONT-OAK
1h 15mnonstop
$126Southwest
Find Deal
Wed, Jun 18 - Wed, Jun 18
Southwest Logo
6:00 am - 7:25 amOAK-ONT
1h 25mnonstop
Southwest Logo
4:25 pm - 10:15 pmONT-OAK
5h 50m1 stop
$131Southwest
Find Deal
Tue, Sep 23 - Sat, Sep 27
Alaska Airlines Logo
8:00 am - 11:59 pmOAK-ONT
15h 59m2 stops
Alaska Airlines Logo
3:04 pm - 11:59 pmONT-OAK
8h 55m1 stop
$275Alaska Airlines
Find Deal
Tue, Sep 23 - Fri, Sep 26
Alaska Airlines Logo
8:00 am - 11:53 pmOAK-ONT
15h 53m1 stop
Alaska Airlines Logo
6:00 am - 11:59 pmONT-OAK
17h 59m1 stop
$280Alaska Airlines
Find Deal
Thu, May 29 - Mon, Jun 2
 Logo
2:31 pm - 10:46 pmOAK-ONT
8h 15m1 stop
 Logo
4:45 pm - 11:46 pmONT-OAK
7h 01m1 stop
Thu, Jun 12 - Sun, Jun 15
Delta Logo
6:00 am - 11:46 pmOAK-ONT
17h 46m1 stop
Delta Logo
1:15 pm - 4:16 pmONT-OAK
27h 01m1 stop
$435Delta
Find Deal
Thu, Jun 12 - Sat, Jun 14
Delta Logo
6:00 am - 10:25 amOAK-ONT
28h 25m2 stops
Delta Logo
6:00 am - 11:13 pmONT-OAK
17h 13m1 stop
$513Delta
Find Deal
Thu, May 29 - Mon, Jun 2
 Logo
9:25 am - 3:50 pmOAK-ONT
6h 25m1 stop
 Logo
6:00 am - 1:36 pmONT-OAK
7h 36m1 stop
Thu, Jul 3 - Sun, Jul 6
Hawaiian Airlines Logo
7:00 am - 11:05 amOAK-ONT
28h 05m1 stop
Hawaiian Airlines Logo
7:30 am - 8:48 amONT-OAK
25h 18m1 stop
$761Hawaiian Airlines
Find Deal
Expert advice

Expert advice for your flight from Oakland to Ontario

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
OAK

OAK's compact size makes it easy to navigate, minimizing stress during departure. Plan for an extra half hour for security lines.

Read more about OAKby Gabriel Leigh
ONT

For a budget-friendly arrival, use Omnitrans Bus Route 61, connecting to key transit centers with frequent service.

Read more about ONTby Jennifer Simonson
Our travel experts
Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson

Jennifer Simonson

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on OAK

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Useful Info

KAYAK's insights & trends for Oakland to Ontario flights

Get data-powered insights and trends into flights from Oakland to Ontario to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Ontario
Find cheap flights to Ontario

Planning a trip from Oakland to Ontario? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Oakland to Ontario?

The average price of all round-trip flights from Oakland to Ontario clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Ontario on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Oakland to Ontario. For your return ticket, we recommend flying on a Saturday and avoiding Sundays for the best deals.

What is the cheapest month to fly from Oakland to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Oakland to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Oakland to Ontario is July, where tickets cost $85 (return) on average. On the other hand, the most expensive months are August and February, where the average cost of round-trip tickets is $293 and $280 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Oakland to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Oakland to Ontario, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJuly
High seasonMarch
Cheapest flight$39
Best time to beat the crowds with an average 63% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Oakland to Ontario

When to book flights from Oakland to Ontario

Are your dates flexible? Find out the best times to travel from Oakland to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Oakland to Ontario

  • What are the transport options from Ontario International Airport (ONT)?

    A very cost-effective and convenient way to make the trip from the airport to the downtown area is to travel on the line number 61 bus operated by Omnitrans that can take you from the airport to the downtown area in about 17 minutes.

  • Which hotels are near Ontario International Airport?

    One of the best hotel choices for travelers that wish to stay close to this airport is the Comfort Suites Ontario Convention Center, that not only sits close to the airport property but also offers a free airport shuttle.

  • Where are the car rental providers at Ontario International Airport?

    All of the major rental car companies that operate at this airport do so at the offsite rental car center. There is a complimentary shuttle service between the terminal building and the rental car center that is quite easy to access at the curbside just outside of the baggage claim exit doors.

  • Where can I meet my driver at at Ontario International Airport?

    Both of the terminal buildings offer dedicated rideshare pick-up areas. To find these areas, simply exit the terminal building from the baggage claim area, and you will quickly find signage showing the location of the designated pick-up points on the curbside outside the terminal.

  • What is the cheapest flight from Oakland to Ontario?

    In the last 3 days, the lowest price for a flight from Oakland to Ontario was $39 for a one-way ticket and $77 for a round-trip.

  • Do I need a passport to fly between Oakland and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from Oakland to Ontario?

    Alaska Airlines, Hawaiian Airlines, Delta, American Airlines, and JetBlue offer inflight Wi-Fi service on the Oakland to Ontario flight route.

  • Which aircraft models fly most regularly from Oakland to Ontario?

    The Airbus A320neo is the aircraft model that flies most regularly on the Oakland to Ontario flight route.

  • On which days can I fly direct from Oakland to Ontario?

    There are nonstop flights from Oakland to Ontario on a daily basis.

  • Which is the best airline for flights from Oakland to Ontario, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Oakland to Ontario are Southwest and Alaska Airlines. With an average price for the route of $275 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $432 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Oakland to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Oakland to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Oakland to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Oakland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Oakland to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Oakland with another airline. Booking your flights between Oakland and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Oakland to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Oakland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Oakland to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $128 or less one-way and $187 or less round-trip.
  • For those travelers that would like to make their way from the downtown area of Oakland to the Oakland International Airport (OAK) without having to drive in their own car, a good option is to take the Bay Area Rapid Transit Orange line to the Colosseum station and then transfer to the beige line to continue to the airport. This entire trip takes around 22 minutes to finish.
  • Passengers that are going to drive their own car to the Oakland International Airport should be aware of the fact that this airport offers quite a variety of different parking choices ranging from their premier lot that offers the closest parking to the terminal building down to their economy lot that offers the cheapest daily rates and free shuttle service back to the terminal building.
  • Nursing moms traveling through the Oakland International Airport should know that this airport offers two Mamava Nursing Pod locations at this airport with one of these pods being in each of the terminal buildings at the airport.
  • If you are trying to find a comfortable place to wait for your flight at Oakland International Airport, one location to consider is the Escape Lounge, that has a location near gate eight. You can go online to book your spot ahead of time, and when you get to the lounge, you will see that it offers plenty of comfortable seating options as well as a good selection of food and beverage choices.
  • For those travelers that will be making the trip to Ontario with a pet or a service animal, it is good to know that the Oakland International Airport features pet relief areas both inside and outside of the terminal buildings. The indoor space sits adjacent to gate 25 and features a sink, cleaning tools, artificial turf, and a miniature red fire hydrant.

Prefer to fly direct from Oakland to Ontario?

Find which airlines fly direct from Oakland Airport to Ontario Airport, which days they fly and book direct flights.

Direct departures

Oakland to Ontario

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Ontario to Oakland

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from Oakland to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Oakland to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Oakland to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.9Comfort
8.2Boarding
8.5Crew
7.1Entertainment
7.1Food
Airline reviews

It was my first time flying Alaska Airlines and first time flying from Santa Rosa airport. The staff was very professional and friendly. Their instructions were clear and any question was answered satisfactorily. My seat was comfortable and the in-flight beverage service very adequate for the duration of the flight. We arrived ahead of the scheduled landing time and deplaning was simple. I look forward to flying with Alaska again.

10.0 ExcellentAnonymous, Apr 2025STS - LAX
Read more Alaska Airlines reviews

It was my first time flying Alaska Airlines and first time flying from Santa Rosa airport. The staff was very professional and friendly. Their instructions were clear and any question was answered satisfactorily. My seat was comfortable and the in-flight beverage service very adequate for the duration of the flight. We arrived ahead of the scheduled landing time and deplaning was simple. I look forward to flying with Alaska again.

Flight attendant took my carefully folded coat and flung it across the aisle to the bin across the way. Where one of the passengers rescued it for me, because that just wasn’t right!!

the flight was delayed twice and then delayed from taking off.

I’m New to Alaska Airlines. I was not able to connect to WiFi on either leg of my flights to/from Santa Rosa. Otherwise, it was an enjoyable ride.

All good. Great food and entertainment when there isn’t any on a one hour flight

Flight was delayed twice, I was forced to check my bag, and the only offered water or apple juice on the flight

Alaska Airlines needs more bag tag kiosks and bag check-in stations in Seattle. A single entry point for the bag tag kiosks would be helpful. This alleviates lines forming at each individual kiosk, which causes traffic jams for people passing through.

The flight was delayed over two and a half hours thus causing me to miss my best friend’s funeral. All because the flight crew had to get more rest. That was the reason stated. I understand however very unfortunate. Glad everyone is well rested and resting in peace.

All good except both the outbound and return flights were delayed about 1 1/2 hrs.

Not great. My flight was canceled due to a mechanical problem and I could not get rebooked for the same day. I needed to get to my destination yesterday, not today. I was able to book with another airline but it was a layover and ultimately a 1 hour flight took me 12 hours. Normally I like Alaska much more than Southwest, but Southwest came through with a not terrible price for same day.

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

We had a nice flight. Boarding was easy, our seats were comfortable and the on board service was pleasant.

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Worst airline ever! The guy weighing my bag had his foot on the metal plate and when I called him out on it, I got this stupid little smirk. La is a scam and so is Spirit Airlines. All the flight attendants looked like they hated our flight just as much as we did.

Unclear pricing; ended up being charged an extra $52 just to get onboard

Spirit is awful. Too expensive for what you get. Stop nickel and diming.

would be great to get basic water, soda at least and stop charging for carry ons

Your crew is a representation of your Standards and Values. The crew from Seattle to LAX, was very disappointing. The crew was more interested in hanging out at the lobby area. Talking, laughing loudly and eating all the snacks. They did not do regular rounds to see if customers needed anything. This was a huge disappointment. I will no longer be flying with your airlines moving forward.

- flight attendants not very friendly. - Paid for WiFi and plane didn’t have it working , never got a refund.

We got to fly on the new airplane. Much better as it’s roomier and cleaner than before. Most Importantly it’s much more comfortable. I still can’t move the seat back but the extra space made up for it. I didn’t taste the food or drinks because they charge for everything so I didn’t bother. I didn’t experience the entertainment because I downloaded my own movies on my phone. The crew was great. The flight itself was smooth . No complaints.

I was comfortable because I upgraded. I would not have been comfortable in economy. It was a short flight so there was limited food service and no inflight entertainment.

I thought since I upgraded my seat I would get some perks. Free water, free snacks. Free carry on luggage.

It’s ridiculous to pay for carry-on luggage. I also wasn’t given an option to specify I have carry on bag at time of ticket purchase. I also could not specify I have carry on luggage at time of online check-in.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

Everything went as planned. Crew was great. Seats were still not that comfortable.

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The plane was clean, the crew was friendly and helpful. It’s a low cost airline so there was no food, drinks or in flight entertainment but we didn’t expect any of these things. In the room for improvement department, they should install USB ports in seats to charge mobile devices.

Everything you need to know for your flight from Oakland to Ontario

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