$125 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 8/22. 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.
1 adult
1 adult, Economy

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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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Best Ontario Flight Deals from Oakland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ottawa
Ottawa2 stops$402
Ottawa
Ottawa2 stops$402

Cheap Flights from Oakland to Ontario

 
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

Thu, Sep 18 - Sat, Sep 27
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7:58 am - 7:58 pmOAK-YYZ
9h 00m1 stop
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2:00 pm - 11:32 pmYYZ-OAK
12h 32m2 stops
Thu, Sep 4 - Tue, Sep 9
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6:00 am - 5:20 pmOAK-YYZ
8h 20m1 stop
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12:00 pm - 11:32 pmYYZ-OAK
14h 32m2 stops
Mon, Sep 8 - Thu, Sep 18
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7:58 am - 7:58 pmOAK-YYZ
9h 00m1 stop
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8:05 pm - 7:03 amYYZ-OAK
13h 58m1 stop
Thu, Sep 4 - Tue, Sep 9
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6:00 am - 5:20 pmOAK-YYZ
8h 20m1 stop
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9:30 am - 11:32 pmYYZ-OAK
17h 02m1 stop
Wed, Aug 20 - Wed, Sep 3
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6:00 am - 12:24 amOAK-YYZ
15h 24m2 stops
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9:30 am - 11:27 pmYYZ-OAK
16h 57m1 stop
Mon, Aug 18 - Wed, Sep 3
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8:13 am - 7:59 pmOAK-YYZ
8h 46m1 stop
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12:00 pm - 11:27 pmYYZ-OAK
14h 27m2 stops
Mon, Sep 8 - Thu, Sep 18
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6:00 am - 10:52 pmOAK-YYZ
13h 52m2 stops
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8:05 pm - 7:03 amYYZ-OAK
13h 58m1 stop
Tue, Aug 19 - Wed, Sep 3
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6:00 am - 6:20 amOAK-YYZ
21h 20m1 stop
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2:00 pm - 11:27 pmYYZ-OAK
12h 27m2 stops
Mon, Aug 18 - Wed, Sep 3
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8:13 am - 7:59 pmOAK-YYZ
8h 46m1 stop
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9:30 am - 11:27 pmYYZ-OAK
16h 57m1 stop
Sun, Jul 27 - Sun, Aug 3
Delta Logo
4:55 pm - 11:57 amOAK-YUL
16h 02m2 stops
Delta Logo
12:47 pm - 11:55 pmYUL-OAK
14h 08m2 stops
$1,107Delta
Find Deal
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.

How long does a flight from Oakland to Ontario take?

The duration of a flight to Ontario depends on your arrival airport. The shortest routes to Ontario from Oakland are to Toronto, which takes 10h 00m, Toronto, which takes 13h 41m, and Ottawa, which takes 25h 21m.


Good to know

Low seasonFebruary
High seasonNovember
Cheapest flight$125
Best time to beat the crowds with an average 74% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Oakland to Toronto

FAQs - booking Ontario flights

  • 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 from Oakland to Ontario 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 from Oakland to Ontario with an airline and back with another airline.

  • 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 from Oakland to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ontario?

    The cheapest time of day to fly to Ontario is generally in the evening, when round-trip flights cost $340 on average. Morning departures are around 46% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $537.

Reviews of the top airline flying 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
DeltaOverall score based on 7952 reviews
8.5Crew
7.3Food
8.2Boarding
7.9Comfort
7.9Entertainment
Airline reviews

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

4.0 OkayMrs., Jul 2025LAX - RDU
Read more Delta reviews

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

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.

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

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